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FCMP2020-0005 Silverrocka u�tt Project Details PROJECT NUMBER ` =�w City of La Qu i nta FCM P2020-0005 MoFT�• . Description: SILVERROCK / AM&M REQ / BCPR2019-0011, 12 & BCOM2019-0072 Status: APPROVED Type: FIRE CONSTRUCTION MASTER PLAN Status Date: 4/1/2020 Subtype: FIRE SPRINKLER MASTER PLAN Applied: 4/1/2020 Address: 79179 AHMANSON LN Approved: 9/3/2020 City, State, Zip: LA QUINTA,CA92253 Closed: Project Manager: Expired: Details: This was a AM&M Request for the use of turfblock Grasspave2 assembly for portions of fire access roadways serving 3 separate Project Areas at the SilverRock development. ADDITIONAL SI DAYS REVIEWS ACTIONS INSPECTIONS CONDITIONS CHRONOLOGYTYPE STAFF NAME ACTION DATE COMPLETION DATE NOTES 2ND PC ROUTED TO Routed to County Fire Marshal and County Fire Chief for KOHL HETRICK 5/19/2020 5/19/2020 OUTSIDE PC review as final authority. CONDITION Fee NAME TYPE NAME ADDRESSI CITY STATE ZIP PHONE FAX EMAIL APPLICANT BAR ARCHITECTS - EARL WILSON 901 BATTERY STREET SAN FRANCISCO CA 94111 (213)349-1400 STE 300 ARCHITECT BAR ARCHITECTS 315 WEST 9TH SUITE LOS ANGELES CA 90015 (213)349-1400 SCHAN@BARARCH.CO 500 M BILL TO BAR ARCHITECTS - EARL WILSON 901 BATTERY STREET SAN FRANCISCO CA 94111 (213)349-1400 STE 300 OWNER SILVERROCK DEVELOPMENT 3551 FORTUNA RANCH ENCINITAS CA 92024 (213)349-1400 COMPANY LLC RD Printed: Thursday, March 02, 2023 2:43:57 PM I of 3 CENTRALSOLIARE a u�tt Project Details PROJECT NUMBER ` =�w City of La Qu i nta FCM P2020-0005 koFTr t •• CLTD DESCRIPTION ACCOUNT QTY AMOUNT PAID PAID DATE RECEIPT # CHECK # METHOD PAID BY BY FIRE STAFF - PER HOUR 101-0000-42420 2 $322.00 $0.00 Total Paid for FIRE FEES: $322.00 $0.00 RECORDS MANAGEMENT FEE - 101-0000-42416 0 $21.00 $0.00 MAJOR Total Paid for RECORDS MANAGEMENT FEE - MAJOR: $21.00 $0.00 TECHNOLOGY 502-0000-43611 0 $5.00 $0.00 ENHANCEMENT FEE Total Paid for TECHNOLOGY ENHANCEMENT FEE: $5.00 $0.00 INSPECTION TYPE INSPECTOR SCHEDULED DATE COMPLETED DATE RESULT REMARKS NOTES RETURNED REVIEW TYPE REVIEWER SENT DATE DUE DATE STATUS REMARKS NOTES DATE 1ST FIRE (3WK) KOHL 3/31/2020 4/28/2020 5/6/2020 REVISIONS REQUIRED SEE NOTES THIS IS 4WK REVIEW - PER KOHL HETRICK Printed: Thursday, March 02, 2023 2:43:57 PM 2 of 3 CENTRALSOLIARE a u�tt Project Details PROJECT NUMBER ` =�w City of La Qu i nta FCM P2020-0005 MoFT�• . The submittal was determined to be incomplete. Additional information from manufacturer specifications and installation guidelines is required. See submitted documents in attachments for 1ST FIRE (3WK) KOHL 3/31/2020 4/28/2020 5/6/2020 REVISIONS REQUIRED SEE NOTES added comments and corrections required. HETRICK Please advise of any questions. Feel free to contact Fire Safety Specialist Kohl Hetrick at 760-777-7074, 760-409-5109 and kohl.hetrick@fire.ca.gov. 1ST PERMIT ARMANDO ALL DOCUMENTS HAVE BEEN ATTACHED. TECHNICIAN (1DAY) MAGALLON 4/1/2020 4/2/2020 4/2/2020 COMPLETE PAYMENT WILL BE INVOICED AT THE END OF THE PROCESS. 2ND FIRE (3WK) KOHL 5/18/2020 6/8/2020 9/3/2020 APPROVED See Attachments for HETRICK signed doc Attachment Type CREATED OWNER DESCRIPTION PATHNAME SUBDIR ETRAKIT ENABLED DOC 4/1/2020 ARMANDO MAGALLON 1ST SUBMITTAL - AMM Application 0 APPLICATION RVCFD.pdf DOC 4/1/2020 ARMANDO MAGALLON 1ST SUBMITTAL - SITE GB PC PR Landscape 0 PLAN pdf DOC 5/19/2020 KOHL HETRICK 2ND SUBMITTAL - SITE 200518_Siteplans PR GB 1 PLAN parcel.pdf DOC 5/19/2020 KOHL HETRICK 2ND SUBMITTAL - 200518_AMM 1 AMMR APPLICATION Application RVCFD.pdf FCMP2020-0005 - FCMP2020-0005 - DOC 4/20/2021 KOHL HETRICK APPROVED AM and APPROVED AM and 1 M.pdf M.pdf Printed: Thursday, March 02, 2023 2:43:57 PM 3 of 3 CENTRALSOLIARE burton N T ZSCME SITE PLAN vmv. "G'B-L-i.00 0 k ry ft i �qf it PSi is rL�ll Relerrla CmssVuctbn Malerlals6 flnlsn ssM1eduk LlulmneCnmtslln¢innr4 daum<ms IpraparinR daepin aM rtbfomemen, uq n tt n d�amnab u."`i"I iemI M`n��'iai E�:° em', rePore rJ R711 .'t Tnkal LnPlnar. do<.nmenb � �"m" ;%dI oi:�i"��n., emleme man, <Mmbe w,lre k NmMn. ,Xa »mn. m X Fa io amlfA Nn <nttt [_j IB' nalu, Ilry.l o .. Q . ,,.P 6p IRaMIp < L1 n 4.,nm°.i:�"a:eape speelueMlm, ana La d,r C—t-1nn Plan., Adenitt.l Nnee, __ __ p . ee�nllu�emMm� i entl amoral revu�ren+m, Joint at Vertical Surface CUMLINN LCILCULIT CURB E ON PANS B• 1 /2. J/4•R 3/4" 6• CURB FACE oO� NOTES: (TYPX'N. Al ALL SNIIIAA COI01TpNBJ 1. SOITOM OF CURB TO SL SET ON COMPACTED SUB —BASE CA NATUPAL UNDISTI M SOIL (PEES Sd15 REPORT). 2. FW191 ALL EXPOSED CONCRETE SURFACES SMOOTN. 'R DE YJ' EXPANSION MMS AT 21' OTC. (MAK] h AT'OURVES. TAIGENTS AND CORNERS. 3. COMIINUE REBAR T RU EXPANSION JONTS. 4. CONCRETE SNAI RE 5B0—G—J2S0 NM TT'PE Y CFMFNT OR PER Or' STA WES. ��II I yytt Wma tivj(¢�91I 'C rC CC rC FF�� = � i n Hefn to De1iI�A lnls sntt�dl U veler r", ls�`upe`�epcirlmlloli i crept" °l slab ZZI Rekr for Oefal"�A Inls sneer � R k<"roMr�aam IIIa ��:.Re�mneenr=mm"I e,nM1nl �nln:, �] A M b�tGlvllEnvin.ehpodamenb � o " of �i n R3 wr�erm�zup,aar„ RR;rantt�,mtt,nnm I I, r3] 6pererllo°LUAU ¢nglneeh tl.cumenrs o;,airm:�l,=16e ,a�mm�nr.rnr,llan ¢ relnrnrttmenl Sawcut Control Joint CO)I Saawcut Construction Joint _�/ I DowelBasketJoint D� sal:: 1 urtira• _ z•a•a• 1 u • �'UR N., SRecltkatlpm OReferla"LenEuaPoPlnnn¢PMm �Rt`i`:IUlznmuPospec a ns ©R"ii."10 ie:�ye Plrtnee Pra�z 0 n: <; la cl:Ii"�Ie1�.7n ap�mnems i� n.in,•lo"Iisna:�:p�°pKuienmm U A6wer I¢a °w�"edre p. w n.amm i, C.ngele curb Rehr b: CYUI F.nglutthdxumenb r] ad .Ne nem ,eK, rtt, mmmMr4in¢mbr"en.�mpanmermepi:b.6;�r"e"nir [] cmrelrN NNkn. R.rb k: MLr.ampm.nb [� Jo•mepenPomm rooti,M Poarea mm�mnnl�In.�n rmrn. Gnmr ana Nmm� In mMenemn © P<hlnK Mnlae pR<rm tn: unir�meNhdrtnnrenn ' In,lell Pea Menulxrurm', Imbllellon guide. Imralkrbn namrrerc Is Vrm+laee M Ine Manubclurer 24• TO F E rS R? ...1/2'sR TP Fl 1/2- R bL e n '0 NOTES: (TYPICAL AT AL SIMILR CONOTpNS) 1. BOTTOM CF CURB TO BE SET ON COMPACTED SUB —RASE OR NATURAL UNDISTURBED SOIL (PER SOILS REPOM 3. nNISH AL EXPOSED CONCRETE SURFACES 5M00111. PROVIDE )4• EXPANSION JOIMS AT 25' O.C. (—) A AT CURVES. TANGENTS .1 COMERS. 3. CONTINUE RT.BAR TNRU EXPANSION JOINTS. 4. CONCRETE 5f 1. BE 560—C 1250 W TYPE V' CENE OR PER CITY STANDNOS. Steel Header \ EV Charger O\ Mountable Curb -I.: 2—(F j scale: I—' --- V� �— Re -O NZ NorLLi"nd�<`uiM Sp�clfkatllRni .n � Re er - RkarFn�eRce`natlehmNeumnn Rehm: cell lFrin<e edxume"nl3 IeNlc Io1 I P le� a�eGea�nl<el Engln<eh axumenb o a��, h .n Po"o yme mn r.n O Reler to Gn".tabelcM1nkal Cnrelimrer§ d.numenb Burton N T IANDSwrnaATIS SLAG 05/ISfm 6' Barriar Curb �'\ Grasspave2 ..k.t.Ta L GB—L-5.01 burton e—+±`e= ,' 'o MF UNDSCM SR[ PUN S�E OS w" PR-L-1.00 Ig Se L z zrY z'P za fF � - 0 L'J ge`eirla� x�nrslruc,bn Marerle8 A FlnISS &M1etlak dq M;E'I€egi r a��m�n�; o°r �`�Sa � rRIMnR reen, U PehPioo Geoleecxnkal Lnelneefa arcumens 0 mzrr'w!I, nIO HILL P.:pnew'smcumen:s Concrete Ocu ,re eaE gn1ce sacnx"uileine wall, etlstirq weiR ra remain, sire wal, Cg7 a ^e�"arifrAla,�, eel fB . aal�.r [] F�.a�analai;ne:oPa rbn, sPa<nmalaaa.ne r..amcarn eemm:exe,r neee laallu11 EnMren's aaumeins lercmcnte----- ----- tleptM1. rxlnlucemens antl tlm.el reaulxmen¢ Expansion Joint at Vertical Surface �E .n. L Laz•-Ew• NOTE: PARNMG SPACE ANO €OACINO ZgaE 54ALLSLOPE NOMORf TRAY 2%M RAMP, Rt't.R TO ArY oreEcna: � .A, // s4{C�CF59.8LE .t b RA4P RAW 3a FMN4rG�ii TTW. 5FACESrJF. ii . e•fxr>t+x ,� asp � .� s wrx RAlsro cuRR, j ; P € f uNT s.c. O.C. VAN ACCESSIBLE SY'ACE R� r PARICIN41kI �// -.... — FAVEME!Li slcNr.Fl�r�slJ 4M. MN- MIN, �.-- iZ'?ALL WHITE LETRRS Van Accessible Stall Efl gM rr lu!UeliIFA IM1Ia aM1eet 171 Rear ra, a aP .Porn ne nx Sawcut Control Joint iz]pmrclmym sracxb,mn, nn:iP iM-n ,$r,a rlanxne prang C7p';r'�,"Qclli"r�� camanrs �"a.r.ra:Lanam<aaksr`p:crmarl�¢ (J "xaie; �°�r�� o�sram�ramm © I 9119R1 t�i }ftr3lr�'`ij{'L`r3�1`trR s''�s``�;• i &:%r'So geslFA Inn a"eel � k .°a r�M�t"�laen,�tl�nm.nn rr;`errem ntsl FI�e a nm nn a all e� g gang Inbraem :e SawcutxConstruction Joint a�I r'3t �r�y�3g r tyi�rtr iP� t�.ir Yf•�K>,:, ei'aWy �'} yt �I{'�:�7'y rClyk': S S � ;<nlrem �lu EnM<e.ra DowelaBasket Joint D IRE eennrebw aorta Pngneera mamenae �:x ge rre: r.ne ,a ,. b<ar an%'nakxngrrnmbmirrexngbrc en,�mp<retlereepi°mnimr"ennit P.PLnuagPla.a�nwr�, LJ ram' tl _ [z]T gNerw scape nanxng PlansTrro aM Vlne � sa tleo con<rHe fooalna wurztlmmalNacelN witM1 wN. Ealor me rin¢a romahx cure �3 FInlN graa.`Refer ln. CNII Eipineersaouimenn � sa-gererrn. Gera xrn sneer �l Compactetl wogam-gelerio: lanesrapesPocxkamru © parklMlsnin-Rehr ro: Clvll Enelneers tlxumen8 • Inuall Por M,nw,aarera m,ollalaa eam.. Ia,bmgan mmw,ra n rroaaaa m rm M,nma<mar Steel Header I Shovel Cut Header ��, I EV Charger &.ak: z•.L'a• F 1—vz•m•v G .k. L.i-0 H Nases __ ❑L rzner m. Une aPo PlennnB Lepentl I� Pefe b.rlUin� apPoa SPoCIP<ixans an Ra e m Untlarw�5�egmatlh aneumen e IJpprtwa¢h�ara�IIoo wwI N�NInnrrsw rabic :.MI pngfneMi Ottume ❑5 Pe : ztaPo sPoalaxuna © per . �o��r�a an�neera�eamenn I l aile` ¢tine ere�aionPimr<Nnn Non Paler :P. GMec�nksl Enyliweh auumenn Grasspave2 burton N W U Z W 0 U) � U � a H Q Z W Q as w 0 Z Q m {5 w V/ IANRSCMFRFTAIIS (0 1Om m PR—L-5.01 burton N W V ✓., Q u u W< � U � a Section D Z D W < as 0 W a Z a m Section H H r N W LANDSCAPE DETAILS u u Section L ------- � PR-L-5.02 Not _ r •,rr . r, L� +rr G 1-f a a.� Ru s insr .r cox Nft eL # a SFt .pw L®A[= SUB -RASE OR NAIYIUL uo TfYIBED sGL C� swLS 9FYnP� s. PAf91 Itt ESaLEEn chcP2fi' zRWA' eaUelEN. PRDYIDE 15' E%PANSIDN Ms E ia' OC 1W] k K LUz llNfdlRSJ. PND [CANERS. �. !E Vql[ eE 5E0••F]35D -V' CEMEM DR PER CITY rr.wv+Ds OA I Not Assigned fo, Not Assigned _ 4�) I Mountable Curb Not Assigned I Not Assigned O I Not Assigned � Not Assigned �n burton T W u Z W N wa � U � a Z 0 Z Z C W d as 0 W 0 Z a m m N T t-L-5.03' Section Riverside County Fire Department Office of the Fire Marshal Riverside Office: 2300 Market St., Ste. 150, Riverside, CA 92501 Ph. (951) 955-4777 Fax (951) 955-4886 Palm Desert Office: 77-933 Las Montanas Rd., # 201 Palm Desert, CA 92211-4131 Ph. (760) 863-8886 Fax (760) 863-7072 DATE APPLICATION FOR ALTERNATE MATERIALS AND METHODS PROJECT NAME PROJECT ADDRESS PERMIT OR APP. NO. OWNER'S NAME OWNER'S ADDRESS PHONE TENANT'S NAME (Ifother than owner) TENANT'S ADDRESS PHONE APPLICANT'S NAME (Not company name) APPLICANT'S ADDRESS PHONE Please Print RELATIONSHIP OF APPLICANT TO PROJECT AND COMPANY NAME FIRE DEPT EMPLOYEE FAMILIAR WITH PROJECT Pursuant to Section 104.9 of the 2016 California Fire Code (CFC), a request is hereby made to the Fire Marshal for an alternate material and method from Section of the , which requires that: I request your acceptance of: (Use attachments if necessary) I believe this proposal complies with the intent of the provisions of the CFC, and that the material, method or work offered is, for the purpose intended, at least the equivalent of that prescribed in the CFC in quality, strength, effectiveness, fire resistance, durability, and safety because: (Use attachments ifnecessary) OWNER, ARCHITECT OR ENGINEER SIGNATURE TITLE DECISION OF THE FIRE MARSHAL ARCHITECT OR ENGINEERS SEAL ❑ Approved ❑ Approved with Stipulations ❑ Denied Stipulations: DATE FIRE MARSHAL or authorized designee 5/16/16 PROUDLY SERVING THE u€atr sCORPOrzATED AREAS OF i IVERSi3E COUk Y A MD THK CMES. tar: 5'ANNNG OErF.UMCRT IJ�Li117%,yA i?ESL:i-7 i',C SPc, 14C—S f i,a nissi�� -VVF L,�s IF\:Dia j LtR u r-A V xC -.--r y LA QU-NTA M EK= F'Er wiORENC 4 ,,L&eY NORCO PALm, C7EsERT PERRIS RANCHO f1MFAQE RueiDoux CSI3 SALN jAcmy'o 'reirF-c trip: ;1V i�;'-C itAt": BOARD OF SUPEl-A(I..a'PO KEiflN.SF;rMrzY D i S]'r c-T, ? :QKN TAVAGLJQNF D!STRICT 2 C HARLES Wl:[31- NGTONI D€�TT MC-J- JOHN, erf\ka3T DI ?"Fzic'r4 3-,IA ioN Asr L." D1s:TRi(-,•r 5 CAL. FARE - RIVE P " DE UNff WERSIDE COUNTY FIRS, DEPARTMENT OFFICE OF THE FIRE MARSHAL 77-233 Las f&n€-�fas Rd.. f�201, Palm Desert, CA 92211-4131 v Phone UK) 863-8886 Fax (760) 86S-7072 ��ov.rvcfire.or� March 29, 2017 Daniel Koravus, F,ir, 75410 Gerald Frrd Dr., Suite 00 P81m Deser'; CIS 92211 Fie- SilverBock Resod - La Quinta, CIS Aiterriate Materials and Methods Bequest — Decernber 7, 2016 Use of Grasspave2 foe required fire apparatus access roadways Mir, koraV05, Tile Fire Department haw determined that the proposed 5ilverRock development may utilize GFasspave2 paving structures for required fire apparatus access roadways as indicated on the site exhibits submitted vviith the Application for Alterr=ate [Viaterials and Methods dated December 7, 2016 sublect to the fallowing stiputatlons: At all times, required fire apparatus access roads shalt be mainaained free and clear of any obstructions and shall be maintained capable of supporting fire apparatus. The perimetee of the four-fo at wide sections of Grasspave2 on each side of ttw tw6ve- foot wide concrete roadway shall be rleady delineated as approved by the Fire Department. Delineation details must be subrydtted for review and approved by the Riverside County Fire Department Office of the Fire Marshal prior to concrete roadway and. Grasspave2 installation. Applicant must submit a detailed maintenance plat, for the Grasspave2 product utiked at this development to include maintaining Clear of all obstructisans (benches, planters, bushes, trees, etc.) and maintaining capability of supporting fire apparatus. The maintenance pian must be submitted for review and appraised by the iiverside County Fire Department Office of the Fire Marshal prior to issuance of any certificate of occupancy for any building served by an apparatus access road witb Grasspave2 pro duct. C Fire apparatus access rOad(s) shall extend to within 150 feet of all portions of the facility and all portions of the exterior walls of the first story of all buildings as measured by an approved route around the exterior of the building or €acidity in accordance with 0,e 2016 California Fire CDde Section 503.1. We request a signed letter from the Applicant Owner indicating acceptance of the above stipulations. Should you have; any additional questions, you may contact halt 8randes, Deputy Fire Marshal at (760) 863-998'5. y wkins We Make u Difference Project: SilverRock Resort (Planning Area 2) Subject: Applications for Alternate Materials and [Methods —Narrative Date: December 7, 2016 Overview The SilverRock Resort project is located to the southeast of the intersection of Jefferson Street and Avenue 52 in the City of La Quinta and consists of approximately 545 acres. The site is bounded by Avenue 52 to the south, Jefferson Street to the east, Avenue S4 to the north and the Santa Rosa M"ntaim to the west. The property is divided by the AllArnerican Canal, which forms a physical barrier between the west and north portions of the property from the south and east portions. The proposed development includes modifications to the existing golf course and the construction of a luxury hotel, luxury branded residential units, a conference facility, a lifestyle hotel, a new golf clubhouse, a public park, trails, streets, and future golf holes. pfanni€tg Area #2 (PA 2) The main area of concern is the Luxury Motel in PA 2. The facility will consists of the hotel central area and spa and accommodation structures consisting of multiple two to four unit casitas totaling approximately 140 hotel rooms. Throughout PA 2, walkways and paths are proposed. These paths will be six (6) to eight (8) feet in width. No vehicular traffic will be allowed except for golf carts and maintenance equipment. This will encourage a serene environment for all guests. The primary purpose of the driveways is to provide emergency access to all parts of the development. There are two (2) proposed access paints to the project at SilverRock Way & Avenue 52 and SilverRock Way & Jefferson Street. An emergency access point will be provided at the south erly boundary along Avenue 54. Planning Area 2 (Luxury Hotel) will have two (2) access points. The primary access will be near the terminus of Ahmanson Lane and an emergency access that runs along the CVWD right-of-way to SilverRock Way (refer to Exhibit "A" attached). Alternative Materials and Methods I n orderto maintain the tranquil setting, the intent is to minimize the use of impervious hardscape as much as possible. With this in mind and the fact that emergency equipment and personnel must have access to all areas of the site, a twelve (12) foot wide concrete driveway with four (4) feet of Grasspavez on both sides of the driveway is proposed. The Grasspavel would be filled with decomposed granite (OG) and intermittent areas of landscaping. This will yield an attractive surface with the strength and durability necessary for emergency vehicles. E''?' Yla s `aiiP+f�y & itypo. 1fBAKERINTL.COM .. �: 754 io Gerold Ford Drive -Suite TOU Palm Desert, CA 9.22n Office: 760_345.7481 {California Code of Regulations, Title 19, Division 1, §3.05ja)] Fire Department Access and Egress. (Roads) (a) ..Roads. Required access roads from every building to a public street shall be all-weather hard -surface (suitable for use by fire apparotus) right -Of --way not less than 20feet in width. Such right -of --way shall be unobstructed and maintainer) only as access to the public street. The two (2) four (4) foot Grasspave2 sections adjacent to the twelve (12) foot concrete driveway will support 15,940 psi which far exceeds the minimum required 84 psi for a fire truck with outriggers (see page 4 of the accompanying Grasspave2JGravelpave2 literature and the). As for durability, the Grasspave2 has a life span of 60 years (see "Quick Reference Guide for Grasspave2 and Gravelpave2 on page 24 of the accompanying Grasspave2fGravelpave' literature and the "Strength of Grass Paving Structures"). Summary It is our opinion that the Grasspavez product exceeds the requirements of (California Code of Regulations, Title 19, Division 1, §3.05(a)) Fire Department Access and Egress. (Roads). This product has a greater lifespan and can ,sustain greater load capacities than required for fire vehicles. It has been used for fire access applications in all climates since 1982. To ensure the proper maintenance and use, the driveways where the product is used will be within a dedicated easement once the final alignments are established. Refer to Exhibit "8" for the anticipated locations of the driveways in question. Page 2 of 2 cnwciii PANG Is Parking - Fine "" -feet intemaia and 20f FIRE LANE WITH TURF BLOCK Memab Fins Lane :W sign 4: No Parking of Vehicles Beyond This PoirT I .inches thick, our porous systems will percolate approximately /r inch of rain per hour! A seven-inch section can stare 2.4 inches of water (about 20 percent void after compaction). Alternatively, ;lard surfaces, such as asphalt and concrete, shed 95 percent of Storm water. AeAhetks As a designer, engineer, coittractor, or homeowner, you can be sure Grasspavez and Gravelpave2 can deliver a more beautiful surface and add a unique look to a site. Grass simply looks better than asphalt and decorative gravel has been used for centuries in landscaping. Spare constraints can be dealt with by combining the beauty of grass or gravel with the utility of paving. Trees and outer vegetation not only survive, they thrive with Crasspave2 and Gravelpave2. Porous paving has the ability to deliver water, oxygen and carbon dioxide through the cross sec- tion —all essential to root survival. Concrete and asphalt suffo- cate and starve the root zonts of water and air. With Grasspave2 and Gravelpave2, you can now design in as many trees and plants as your site will allow. Grasspave2 and Gravelpave2 prevent com- paction while allowing for ample amounts of water and air. Cars can then drive and park below tree canopies. Saving existing, mature trees is also possible with our products --our structures can come within inches of the mature tree trunk without damage. Our mats have the ability to flex with the tree root growth that would otherwise damage and crack hard surfaces. DviraymnuBaneft Grasspave2 and Gravelpave2 not only protect the environment, they entrance it. All of our products are made from 100 percent recycled plastic —plastic that goes into improving the environ- ment and not into a landfill. Through biurernediation, porous pavers have the ability to clean pollutants (heavy metals, 96--99 percent; suspended solids, 95 percent; phosphorous, 85 percent; nitrogen, 82 percent, hydrocarbons, up to 100 percent) out of storrnwater. Our products also reduce erosion and soil migration, reduce site disturbance, and contribute to airborne dust capture and retention. Cooling the atmosphere and reducing the `urban ]teat island effect' (cities being up to 10 degrees hatter than undeveloped land) are added benefits of Grasspave2 and Gravelpave2. Both products can mitigate these increased temperatures. In addition, Grasspavez promotes the conversion of carbon dioxide (green- house gas) into oxygen and has an "air-conditioning effect." Environmental, economic, and aesthetic enhancements are drawing homeowners and designers to use Grasspavez and Gravelpave2 in driveways. Most residential driveways are good candidates for our porous duo because of the reduced speed and limited frequency of traffic. Our products can add beauty to residential and commercial driveways, F�MVLW Parking for churches and synagogues, stadiums, arenas, and overflow at shopping centers, campuses, parks and more are ideal for Grasspave2 and Gravelpave2. These sites generally support large numbers of vehicles but only on periodic basis. Storrawater management and green space can be combined with parking, reducing maintenance, real estate, and development costs. A great design idea is combining durable Gravelpave2 drive aisles with attractive Grasspave2 parking bays. PadeMiw,i vwTrails and 84deifs Garden paths, greenhouse aisles, sidewalks, park paths, and wilderness trails paved with Crasspave2/Gravelpave2 provide a stable surf -ace for strollers, bicycles, wheelchairs, and horses. There are no puddles or mud and traction is very good. `free roots break up hard surface sidewalks, but our- mats flex to accommodate such shifts and gradient changes. Pius, with the high proportion of air, Mots are discouraged from moving upward. Mountain Bikers will not be able to Lear up paths reinforced ti'ith Gras5pave2/Gravelpave2. Our products call resist the destructive forces of mountain hikes, allowing your trails tohe rtt�peried,� to bikes. Fife I.m 6y far. (tie most common application for Grasspave2 and Gravelpave2 installations is for fire lames. Out• long and established history of providing safe, well - constructed fire lanes began itt 1982 with our first installa- lion in Snowmass, Colorado, near Aspen Ski Resort. Since then. we have firmly established credibility for this application. Tests have i' been conducted by several fire departments if', Aurora. Colorado and Irvine. t. California, dearly every major U.S. metropolitan area has accepted and used Grasspavez in a fire a: lane. You will most likely find a fire lane installation � s in your area.E�i`sa. �rx�e,�KH�yy asgeva2 Installation —Mits can be rolled aA in minutes! 600 ant (6,000 s� per two -person hour! ,For steps shown below-100 m2 (1,080 Sf per two -person hour€ +tOdwwfflvftM y�rr�aP�r-Asorr�ty� This foslalla lion section is only intended as apt overviety. please review our Grasspave2 Technical Specifications available ai rvwOnvisiblestractares com or call 800-233-1510) for comprebensive inslalla tion instructions. Excavate a space for the base course as determined by site soils and leading requirements. Place and compact sandy gravel which should be a mixture of clean sharp sand and gravel varying in size but not exceeding 314 of an Inch, To check porosity, use a hose to see that water flaws into the base and drains away. Add subsurface drainage as necessary to low spots or locations with poor draining soils, Install irrigation lines and sprinkler heads if necessary, Apply the Hydrogrow mixture that is included tree with your order. Hydrogrov4 is a mix tore of polymer and fertilizer designed especially for our `` Grasspave� system. Roil out Grasspave2, aligning the side hole fasteners over the side pegs. The warmth of the sun will relax the plastic so ii lays flat. Cut the grid between rings using pruning shears. Incorporate the cut pieces in other areas, as needed, keeping the distance between the rings uniform. Fill rings with clean sharp concrete sand (AA5HTO lull} or ASTM C-33) using large rakes and brooms so that the tops of the rings show when done. Lay turf over the rings. On warm days, wet the sand first to loner sand temperature and provide moisture for grass roots, Seeding and hydrornulching is also an accepted vegetating method at this stage. Repeated hydromulchinglseeding may be Necessary. Itoli sod with heavy roller to eliminate air pockets and make sure roots are in contact with the sand fill- Water lawn as usual according to climatic requirements. Whether the area has beets seeded or sodded, wait to drive on grass until two mowings have been completed, by which time the root system will be established and the sod pieces lacked into place. In an emergency such as the need for fire truck access, grass may be driven on immediately after installations. Use a regular lawn mower for maintenance. There should be no paver parts protruding through the surface that would 1, damage mowers. Do not aerate! Fs�tf�d'rpHdi nWW09. Rxr�xgr�erua?h rmtkrorfiatp�e rur�arax-Gntslx�. You grill need l" of gravel fill, compacted. Be careful to order enough for the compaction process and choose a gravel size that will nest well into the sings. We have found that'/,G" minus crushed stone and sometime GIs" with limited small sharp screenings (#40 to PIDU screen) works well. Washed gravel will roll within the rings and will also'rall about." For this reason, we do not recommend pea gravel, even though it is often very attractive. A visit to your local quarry is suggested. We have found that some geological areas of the united States have limited types of sharp gravel available. It has been necessary to impart gravel from a neighboring state. but remember the amounts are relatively small — the top one -and -a -quarter inch of the cross sec- tion. Gravel should be as free of fines as possible. To maintain porosity, avoid soft stone materials with low durability that will break easily. rFill Mfti&€ Please ask our staff for assistance with this category since it is use -specific and often experi- menta]. Ground rubber, crushed glass, crushed brick, and many other materials can be useful as attractive fill materials for various applications. Thermoset (epoxy, polyurethane, etc.) binders may be cost prohibitive for most projects, but offer unique design possibilities, including clarity, color enhancement (wet look), flexibility, and durability. Our technical support staff will] assist with selection of gravel sources. The photographic samples shown on this page will help you narrow your gravel choices. Should you have questions concerning the selection, please submit a small sar or Tf ?his iffs£allation section is only intended as an overview. Please xeview our Gravelpavc2 Technical Specifications (available at WWW.ln visiblestructu)-es com or call 800-233-1510) for cQfnprehef£sive installation instructions. Prepare sandy gravel base course to a depot as determined by a soils engineer. Compact with a vibrating plate compactor or use a heavy motorized roller for large jabs. To test porosity, water with a hose and check to see that water drains readily through the base course before installing the Gravelpave2 mats. Roll out mats with the grain (in the same direction) so that the snap fit fasteners can be used with neighboring mats. To fit around boxes and curbs, cut the grid between the rings with pruning shears and scissors or a small portable electric hand saw Fasten the mats together using the snap fit fasteners that are molded into the product inserting the prangs into the rectangular openings. Tuck the fabric underneath the fasteners to keep joints closed. A quarter -inch nut driver head (6 mm) fits nicely over the fastener to compress the pieces together. A piece of lumber placed under the GravelpavO mat will provide stability to aid in fastening. Supplied anchors must be used to secure the mats to the base. Hammer anchors with washers at a rare of one anchor per six rings in bath directions. Use extra anchors around the perimeter of the Gravel ave2 install and in highi, traffic areas. Reciprocating,,`;;' hammers can be used to speed up the r anchoring process. Anchors should be placed inside the rings as close to the center as possNl e. Begin anchoring from one carrier in a radial pattern. Gradually place gravel fill (see suggested sill material on facing page) into rings try using a front-end loader and snaking out the Pill as the machine drives forward. Carefully lower the bucket when empty and back up while dragging it above the rings to smooth out the gravel, finishing with a stiff broom. Wheel barrow and shovel works well for small jabs. Contractor tip —'you can stare excess material for future maintenance, tap dressing as may be necessary. Use rakes andlor push brooms to distribute the gravel fill to a level slightly above rings so that compacting the fill will not uncover the rings. Use a vibrating plate compactor or large driving roller again to compact the gravel fill. Additional gravel may be necessary to finish filling the rings. Compact again until the material appears solid in the rings, Wetting the gravel may help it to interlock. Drive on the installation when finished. If car tires make a pattern, there may be too much gravel or it may need additional compaction. It is expected that tops of the rings may be visible. If sides of the rings show, then add more fill material and repeat the compaction process. 12 wrimigly Gravelpave2 and Gra5spave2 golf cart paths give the look of a natural path through trees, alo7g fairways, and around greens. The flush surface requires no trimming or edging. Traction is excellent with Gravelpave2 and Crasspave2 traction is slightly batter than grass. Grasspave2 and Gravelpave2 can enhance your golf cart staging area, pedestrian traffic area, parking lot, road shoulder, and mainte- nance yard. k"Xbl8DaA�1P Car dealerships have discovered t ass av 2 that Gr e and Grav el ave P P are perfect for automobile dis- play areas. Dealerships now have an option when it comes to adding paved areas for car transport and display. Dealerships like the "soft` attractive look grass and decorative gravel provide. lltilityandKUntgw=lbhde Providing your site with impor- tant utilitarian functions with- out compromising beauty is simple. Grasspave2 and Gravelpavez can incorporate a structural road without inter- rupting your landscaping. No obtrusive concrete or asphalt access roads are necessary to get to window washing areas, pump stations, microwave tow- ers, tanks, or electrical boxes. Mqteia� Our mats are installed in some unique and interesting places: Helicopter landing pads, race czar display areas, outdoor amphithe- ater seating, under picnic tables, under concrete pavers (support), airplane display and transport, cemetery marker reinforcement, cave drip lines and more. Installations are not limited to traditional paved areas. larwluls Our patented systems have a shipping, handling and installation advantage as well —large rolls. Our standard roll size (model 2020) covers 431 sq. ft. (40 m2) and weighs 192 pounds (87 kg). Other roll sizes are available. installers of our products have repeatedly commented that they Lab Compression Test Results Load bearing capacity of filled Grasspave2/Gravelpave2 rings vs. concrete, and vehicle loading examples �S»r,u j.. .............. �l:Y.v.'ACi•Y7%�Nr9Et• f _•' %r. :r 1 1 � -=r 3 5 M _ 1 i` 8L Runoff Comparison Chart Runoff coefficients, Grasspave2lGravelpave2 and 10490 sandy gravel base over various soil types 90% Apak 80% 60% 50% 40% 30% 20% 10% 0% f�i �aars3rd 1 2 3 4 5 6 7 8 9 1€1 11 12 Inches of Rain During 24 Hours Ca]rulatrans 1uduae Gp2%Vplaced m•o: $ of over nal4vesssUs ir�diraiea. Bing"Gidammm Grasspave2 is by most accounts the best flexible grass paver made today. Its unique ring and grid structure allow for flexibility, stability, and exceptional grass growth. With 92 percent void space for healthy roots and 100 percent grass coverage, Grasspave2 is the industry's preeminent choice. Our installations are hard to (rind because they are invisible! With so little plastic near the crown of the grass. the blades of grass are not smashed by prod- uct. Root development is not interrupted from spreading laterally. The rings are strong and rigid, keeping grass root systems pro- tected from harm. The roots grow directly downward, deep into the sandy gravel base course. enjoy the easy installation. Rolling out Grasspave2 is similar to rolling out carpeting and coverage is fast and effi- cient. The mat system can be easily cut to fit around trees, irrigation, curbing, or other ra' ter tn. The rolls have snap -fit o e sn tt p connectors to attach to adjacent rolls, making one unified, con- tiguous system. This unified gnat System adds stability and continuity in design. Grasspave2 can just as easily he snapped to Gravelpave2 to add stability and product variation. Another reason Grasspave2 is the industry leader is the additions of Hydrogrow soil amendment, which is supplied with your order. Hydrogrow is engineered to help grass grow in our sand based rout zone. The results are amazing and our Grasspave2 areas often look healthier than surrounding turf. By using this special mix- ture in the sand, porosity will be maintained, turf will he attractive, and aeration will not be necessary. Sa dFill Grasspave2 is the only grass paver on the market specifying sand as part of its crass section - Sand is the best medium to pro- vide water and air to the roots and still provide high compres- sive strength, The United States Golf Association uses sand for every USGA golf course and nearly every professional and colle- giate turf athletic field uses a sand cross section as well. 'ropsoil (or other organics fill material) in the rings will eventually compact and damage the root zone. Sand negates the need for mechanical aeration, which can damage Grasspavc2 and other grass pavers. %MAW= lr6WM When installed over a thick Rase course and compacted to 95 percent modified Proctor, sand -filled rings can support 5,700 pounds per square Inch (psi) without deflection or compromise to safety. The cylinder is the strongest shape to support. compressive loads because it has no corners. Supporting heavy loads with the rings allows us to use less plastic in the product creating a 92 percent void area for roost development. combined with strength! Less plastic meats a lower cost for you. 14 Trdffr oy Crass as a surface material can withstand from two to six (varies with grass species and environmental conditions) trips daily over the same spot. This Suggests that most parking applications we pave with asphalt today could be paved with Grasspave2 instead. Vehicles can remain parked on grass for extended periods of tarns, provided some relief can.be giYen for a few days for the grass to recover, 04M Grasspave2 has a projected lifespan of 60 years. Compared to asphalt with a Iifespan of 15 years, and concrete with a lifespar) of 25 years, Grasspave2 will save you money on replacement costs. Grass needs water and you may need to have irrigation installed. Grasspave2 has a sand based root zone which usually requites slightly more water than a normal topsoil or organic root zone. if golf courses in your area use irrigation systems. you probably should in your Grassapave2 installation. 1=&i,, lying aw L3-id When we developed Gravelpave2 in 1993, our goal was to provide designers a second option for a porous pavement that can tolerate high frequency and low -speed traffic. By molding our ring and grid structure onto a nary woven polyester filter fabric, we were able to create a new product that contains gravel and prevents particle migration and rutting. Should the fasteners of one mat not align over the distance of another mat, then anchor pins (or eight inch ring shank mails and large washers) can be used to secure the mats along the seam. Forcing the alignment can cause the coats to ripple and not lay dawn evenly. TraftFmwency Gravelpave2 has no limits on frequency or duration of traffic on the system- Park or drive as often as you like on Gravelpave2. However, speeds should be kept at or below about 24 mph (30 krolh). :.:.. :r a s,:, DiraWlity Grasspavez and Gravelpave2 are .. made from flexible High Density Polyethylene (I-IDPE) plastic with UV inhibitors, which withstands repeated 'r....... � i::.!freeze-thaw cycles and continuous subzero tem- peratures without crack- ; •:. T4�; _;�� . ing. HDPE resists aggres- sive chemicals such as road salts, motor oils and fuels. HDPE is highly abrasion -resistant and is unaffected by extremes in pl-i. A well - maintained Gravelpave2 installation will last 25 years in most climates. i 1 Model m ft to ft in ft m? fat kg ibs .1010.: i 3.3 10 32.8 ': 1i.5 ` .1.7 10 108 22 48 1020 t 3.3 20 65-6 0.& 2.7 20 215 44 96 .1520 €,5 4,9 20 .65.6 0.8 23 :30 .323 65 144:. 2020 2 6.6 20 0.6 0.8 2-7 40 430 87 192 t2IM i5 8.2 20 65.6 0.8 2.7:503tLfl9 24R (2popeadvi5d). Rolls applyto Grasspve- Grwelpave�, Drainroret i GravelpavO is the only system specifically designed for aggregate containment porous paving, The cylinders displace the load onto an engineered base course and hold the decorative gravel in place. The fabric keeps the top -dress gravel from compacting into the road base, acts as a weed and vegetation barrier, and suppresses dust. Traditional pavements, including gravel roads, are designed to shed water and keep it away from the pavement's cross-section, Gravelpave2 is designed to do the opposite ---welcoming water clown through the system. Plus, Gravelpave2 will not rut, wash- board, or puddle like traditional gravel roads. SrWaPalerm Designed into Gravelpave2 is a scrap -fit fastener, a two -pronged arrow that fits into a rectangular slat. Simply push the slot over the prangs to easily snap together panels of Crasspave2. To take therrl apart, just squeeze the prongs together and lift off the slot. Palhatis Part of what draws many designers to use Gravelpave2 is the ability to have an area maintain a natural look. Many times native soils or gravel can he used as fill material, comple- menting surrounding areas. Gravelpave2 is available in four standard colors —black, tar, gray, and terra Gotta (custorn colors are available at addition - a) cost). Ring colors are intend- ed to blend with the gravel color so they will be less visible should some portion of the rings show. A small amount of excess stone rill should be left above the top of the rings to provide visu- al cover and additional UV protection. This excess will migrate, but usually not very far. SUe and Shape R*mrontsfart Fill You will need one and a quarter inch (3.2 cm) of gravel fill, before compaction. After compaction the gravel should he only be slightly higher than the rings ('/8 inch, 3 mm above). The following criteria far gravel fill will make the most of the systems performance; • Hard —resistant to breaking, crushing or crumbling a Sharp and angular (do not use rounded pea gravel) Clean, washed (free of fines) Size'& to -% inch (5 min to 1 cm) Other fill iaterial may be used in certain situations, but may be considered use -specific or experimental. Please consult with our technical support staff regarding fill material not meeting the above criteria or for installations requiring "binders." 76 Dirt and gravel roads have the potential to hick up dust and dirt ..when traversed. Many communities have regulations limiting or .eliminating gravel surfaces from new construction. Rest assured, if you design a Gravelpavez surface you will be getting a virtually dust - free surface, The clean and washed fill material required to till the rings will not have any more dust than an asphalt -paved surface. Gravelpavez's geotextile fabric will prevent the dust sized particles contained within the base material (existing gravel surface or dirt), from being displaced by moving tire or wind forces. Ecrtckhmuges Whether you are an engineer, architect, landscape architect, contractor or homeowner you will be concerned with the cost of you project. Grasspavez and Gravepavez will save you money. Our products will save on design costs, installa- tion costs, component materials, maintenance/operations expenses and liiecycle costs. We can find a way to reduce your site expenses with our porous pavers. When designing, you may be aisle to eliminate or reduce storm - water filters, detention basins, conveyance lines, modifying grading requirements, or many other 'necessities' associated with asphalt or concrete. A great deal of your stormwater mitigation plan can be built into Grasspavez and Gravelpavez, Installers have been astounded by the speed and efficiency for which large areas can be accommodated by our large rolls. Unrolling our mats, snap fitting, and cutting is easy and requires no special rnacWnery. Please view our technical specifications {from v,%kEw.invisiblestructures.coin. call 800-233-1510, or ava0- able through our partner network) for the installation procedure. A brief installation overview is also on pages 8 and 10). �1�rpd� s�r��56n; In addition to cost savings in the design phase, you may be able to eliminate other components during installation such as rout protection for trees, grates, manholes, curbing, and tree and vegetation removal costs. Maintenance and operations costs are significantly reduced over asphalt and concrete surfaces. A. (Andy) E. Lindsey, Director of Grounds Maintenance, university of South Alabama, in his written analysis dated February 18, 1999, compared the cost of our porous systems to asphalt pavement using historical data from university records. The conclusion was a $56,000 savings over 20 years, by using Grasspavez and Gravelpave2. Our products can save you the most As mentioned above, Grasspavez and Gravelpave2 have a longer lifespan than asphalt. Compound the above savings with the longer lifespan, and you can have a lifecycle cost which can save thousand of dollars on even moderately sized installations. Our porous pavers not only have advantages over impervious surfaces, we are proud to compete with any other plastic porous pavers manufactured. Our products are the strongest on the market 5,721 psi installed (39,273 kPa, 823.844 psf or 7,414.416 psy), or 2,100 psi empty. Grasspavez and Gravelpave2 have 55%rr[ Eli'-,�. �' E r• X, 0�..-, fF£ S^Ys�a�tt¢.�E a. 92 percent void space for the best root development and grass coverage (Grasspave2) and the most volume available for desired fill (Gravelpave2). Most other plastic pavers come in rigid unit blocks, which are cumbersome to install and difficult to cut and shape. Grasspave2 and Gravelpave2 rolls are considered the favorite to work with by installers, for the flexibility continuity, and speed of installations. Grasspave2 is the only produc[ on the market specifying sand infill for the grass roots. Sand is recom- mended as the infill of choice for grass pavers by Professor Bruce Y. Ferguson, Univ- of Georgia, author of the book, `Porous Pavements.° (brtng Porous paving technology has made great strides not only in flexible plastic pavers but in other areas as well. Permeable asphalt, permeable con- crete, interlocking unit blocks. rein- forcement mats, and concrete grid pavements, have all improved and advanced to meet the growing demand for environmentally friendly technolo- gies- It is Invisible Structures' firm belief that you should use porous Paving, even if it is not our product line, whenever possible. The more you use these technologies, the better accepted they become: If you have to pave, porous pave! Invisible Structures also contends that while these competing tech- nologies have their place, in most instances, our Grasspave2 and Gravelpave-Z systems outperform, Iasi longer, require less maintenance, look better, and are easier to install. Check with our technical specialists at 800-233-1510 for the latest data. De§p for LbB There is an area in your development, site, or haute that will most likely ben- efit from Grasspave2 and Gravelpave2. We advise that you take a look at prop- er use patterns, site conditions, and other specifications to get full advan- tage and long life out of our products. Invisible Structures, 800.233-1510, is available fQr preliminary design assistance and COP SUN lion. Please Dole [hat other porous paving systems are NQT interchangeable with Crasspave2 or Cravelpave?, consult our technical specifications for fall installation instructions. Fiat: • High use, low speed, and unlimited traffic volume is optimal for Gravelpave2 • Low to moderate use, low speed, with recovery time is perfect for Grasspave2 or Gravelpave2 l:eep the porous paving area free of sediment and erosion from adjacent areas as they can cause drainage and aesthetic issues. Extra care should be taking for use in swales or ]terns. Slope should be considered. Grasspave2 and Gravelpave2 perform the best for all vehicles when the slope is no greater than 8 percent. Light vehicles (golf carts), bicycles, and pedestrian areas can have up to a 20 percent slope. Grasspave2 in fire lanes should not exceed five percent (consult your local fire departrrrents). Check the permeability of existing underlying soils. Percolation rates should be .€ 4 cm to 1.3 can of water per hour (EPA guidelines). The water table should be about three feet (approx. I m) below base course in most instances. Bedrock should not be closer than two feet (G,6 tn) below ,base course. • Avoid use of Grasspave2 and Gravelpave2 in areas inhere high- speed acceleration or braking and turning occur. Examples are entrances and exits to parking lots that connect to higher speed roads, Faukm5ar:A4964GA—I +rra e� fati a� a4MbergU4h1n&R* ? If your site varies from these cnndi- tiorrs, please consult IS] directly. 800-233-1510, as some conditions can be overcome ivith design and component adjustments. Bme (kit Calculating the depth and composition of materials for the base course incor- porates the same design criteria as for other pavements: • Load -bearing capacity of native (or fill) subsoil, • Plasticity or impact of moisture on strength and longevity, a Frostheave potential, and • Traffic load, frequency and/or duration. San*BMGximDapft Please consult with a soils engineer for site -specific base requirements. Generally, the depth that is used under asphalt will be the requirement under Grasspave2/Gravelpave2. Golf carts and pedestrian traffic may require nothing over sandy gravel soils, and just two to four inches of base course (5-10 cm) over very weak soils. Cars usually need a six- to eight -inch base course (15-20 cm). Buses, trucks, and fire engines can easily require eight to 12 inches �20-30 cm) or more. The use of geotextiles, below the base is not required, but will prevent integration with subsoils and is strong- ly advised in areas of clay or silt soils and frost heave. I3o not use 100 percent Limestone base as liniestone will compact and becoDme impervions---Iflimestone F V51 be used, mix with 25-30 percent sand (AASTO M6 or equal), F3etitlir��ulll� Do not use a sand setting base with our products. Unlike concrete pavers, bricks, and other rigid pavers-mir Grasspave2 and Gravelpave2 are flexible and do not require sand to level. EdpftWjon For aesthetic and maintenance considerations, you may want to design in a durable edging material to separate our porous (ravers from adjacent areas of turf or to simply delineate a fire lane or path. With Gravelpave2, an edging can prevent vegetation from encroaching onto the system and can prevent the gravel fill from migrating at the edge. Steel, aluminum, wood, brick, or con- crete are all acceptable edging materials. Keep the edging flush or slightly higher than the porous paver grade. &MWA�2t� Irrigation is required in dry climates. Any popular pop-up system can he used, Simply cut out rings to reveal the irrigation head. If golf courses in your area use irrigation, systems, you probably should in your Grasspave2 installation. Be careful not to over - water as this will encourage shallow root development. Fertilize once a year with an. NPK slow -release fertilizer that contains trace elements. There are many brands on the market, Do not aerate! You'll end up with product damage, When installed using sand in the rings, there will not be a compaction problem. Be careful not to use clay -based suds in pedestrian or vehicular traffic areas —use sandy soil sod, or seed and mulch. There seems to be no problem with sod selection for fire lanes. if the Grasspave2 area has just been seeded or sodded, drive on it only in an emergency, Potholes will only appear if the base course has not been compacted properly before laying the rings or if the base material is allowed to mix into clay soils below (use nonwoven fabric to keep separate). Should this occur, remove a section by vacuuming the gravel from the rings, unfasten the snap fit fastener, bring the base course to the proper grade and compaction, put the Gravelpave2 square back in place, anchor, and fill to the top of the rings. Seasonally check the rings in high -traffic areas and entrance lanes for lower levels of fill and replace by sweeping gravel from other areas to bring it level again, Leaves should be raked or vacuumed and not allowed to decay. Organic matter will stimulate weed growth and reduce porosity. To attack any occa- sional weeds that may locate within the Gravelpave2 installation, simply spray them with a weed k0ler (such as Roundup'`) and remove them when dead. "MygecMOM Porous pavement thaws faster than conventional pavements because it allows melted water to #love directly through the pavement, increasing the temperature in the cross-section_ Grasspave2 and Gravelpave2 are made from flexible high Density Polyethylene (HDPE) plastic with UV inhibitors, which withstands repeated freeze -thaw cycles and continuous s0zero temperatures without cracking. Fire departments usually require you to plow snow that is over three " inches deep. (7.5 cm). Consult with your local fire department for their guidelines. Educaw your snow removal crew to take care not to have the plow blade make contact with the Grasspavez or GravelpavO systems. Experienced snowplow drivers can leave a thin layer of snow on the systems or they can attach skids C14 inch-2 cm) to the bottom of the blades. Invisible Structures, Inc. welcomes the opportunity to review designs and answer technical questions. Design details, technical specifica- tions, white papers, and other support material may be downloaded from our web site. See a comprehensive list of project profiles and case studies at www.invisiblestructures.com. In additions to the high -quality, professional, experienced staff at our main headquarters in Colorado, we have excellent partners represent- ing their geographical areas. They are prepared to assist you locally, at all levels, with your project needs. Please contact us or check our web site for your partner name and information. amwifftTyEfim Invisible S tru ct u r es, I nc. 160D Jackson St. Suite 310 . Golden, Colorado 80401, USA 800.233-1510 overseas and locally 303-233-8383 Fax 800-233-1522 overseas and locally 303-233-8282 www.invisihlestructures.com email: sales@invisiblestructures.com Grasspave2 and GravelpavO Patent No. 5,250,340 Held by William Bohmhoff, ASLA. Copyright 0 2006 &2quesid &M*Me.'hua% swamXDrMpff .._ . 5ffitnu�a�taa�f ►�ts7Q�cA 24 Comr fflme Ruth t32o'rffaktv &aML0M-gMP6 'w!R' *aw ftignDam ,�fi'��kYl�l�ste arvzwtwxsckVkrm- a �—fr¢�drtlx� #� ter A�f�OP"lil�—r7�r qdd Uri; mAn aridojabilm bm➢ %%ab4aidmm oft Wffence Cu1a Description Connectable .ring and grid system Connectable ring, ,grid, and integrated fabric Also Included...... :.. 13ydrpgro..w.polymex. exctu Ivelylar. Geo;exti1.e.fabric.i6lde0.;ogrid..iex�l�siire.t4... Grasspavez �. GrauelgaYe�j and a;tzchors Available in.Large, Flexible Rolls. Yes, various sizes -see roll chart page 14 Yes, various sizes ---•see ro)l chart page. 14 Colors Black::.:' .. .:.... $lads, gray,:tan,.terxa ca;ta. eus[oin colors, ea ira. Components Needed for System Base course, sand, labor, sod or seed Base course, 11/4" (3.2cm) 9f Yle" to 1/8' (irrlgatlon is recommended) decorative gravel, and labor Traffic Low.speed, intermiTtent tq rnoderate.use...::.... Love:speed, unlimited use Compressive System Strength Filled: 5,721 psi (39.273 kPa); Filled: to 5,721 psi (39.273 kPa) Empty: 2,I00 psi (14,470 kPa) Empty: 2,100 psi..(14,470 kP.a) Life Span 64 years . 25 years ...:...::... .. Recommended Maximum Slope 5% fire lanes, 9% carAight truck, 15.20% golf 5% fire lanes. 8% car/light truck. 15-20% gulf carts,.pedestnan use, and trails carts, pedestrian use, and trans Storrawater storage Yes ::..... Yes Clean. Pollutants through Bioremediation Excellent Good Air -Conditioning Effect Yes No -feat Island Mltigatlon Yes --thermal conductivity, heat storage capat4y. Yes -thermal conductivity, heat storage capacity, density,aibedo (.40).and emissivity density, al]bedo (varies) and emissivity Reduces Runoff -and Non -Paint Source Poilsstlan Yas Yes Recycled Content 100% recycled HDPE plastic 100% recycled HDI L, plastic, remnant fabric Erosion Control Yes Yes Airborne Dust Capture and Retention Excellent Gard Promotes and Retains Tree Growth Yes Yes Recharges Groundwater Yes Yes 1600 Jackson St., Suite 310, Golden, CD 80401, USA 800-233-1510 • Fax: 800-Z33-1522 Overseas and locally: 303.233.8383 • Fax: 303-233-8282 www.invisiblestructures.£ti111 GravelpaveZatfd Geld by i Patent hn 5,250, LA held 1:y K:lliaar Sohftl�aff, ASLA email; Sales@invisillle5tructures.com Copyright � 20M Riverside County Fire Department Office of the Fire Marshal Riverside Office: 2300 Market St., Ste. 150, Riverside, CA 92501 Ph. (951) 955-4777 Fax (951) 955-4886 Palm Desert Office: 77-933 Las Montanas Rd., # 201 Palm Desert, CA 92211-4131 Ph. (760) 863-8886 Fax (760) 863-7072 APPLICATION FOR ALTERNATE MATERIALS AND METHODS DATE 03.30.2020 PROJECT NAME PROJECT ADDRESS Silverrock Way 52-329 to 52-399; and PERMIT OR APP. NO. Silverrock Resort 52-800 to 52-899. PA10A and PA 6 B OM2019-0072, BCPR2019 OWNER'S NAME OWNER'S ADDRESS PHONE SilverRock Development Company. LLC 3551 Fortuna Ranch Road Encinitas CA 92024 760 634-6543 TENANT'S NAME (If other than owner) TENANT'S ADDRESS PHONE APPLICANT'S NAME (Not company name) APPLICANT'S ADDRESS PHONE Please Print Earl Wilson, BAR architects 901 Battery Street, Suite 300, San Francisco, CA 94111 (415)293-5700 RELATIONSHIP OF APPLICANT TO PROJECT AND COMPANY NAME FIRE DEPT EMPLOYEE FAMILIAR WITH PROJECT Architect, BAR architects Kohl, Hetrick Pursuant to Section 104.9 of the 2016 Californi Fi SodT (CFC), a request is hereby made to the Fire Marshal for an an (-R alternate material and method from Section 'A s of the (� ,which requires that: California Code of Regulations, Title 19, Division 1, §3.05(a) exception Exception: The enforcing agency may waive or modify this requirement if in his opinion such all-weather hard -surfaced condition is not necessary in the interest of public safety and welfare. 503.2.3 SurfaceFire apparatus access roads shall be designed and maintained to support the imposed loads of fire apparatus and shall be surfaced so as to provide all-weather driving capabilities. RVC Fire requires minimum 60,000 pounds over 2 axles. I request your acceptance of: Fire Apparatus Access Road and turnaround to be constructed of 5' of concrete and 15' of GrassPave2 at Golf (Use attachments ifnecessary) Bungalows. Fire Apparatus Access Road and turnaround to be constructed of 6' of concrete and 14' of GrassPave2 at Pendry Clubhouse. A portion of Fire turnaround to be constructed of of GrassPave2 at Pendry Load calc: Residences. See additional notes and specifications on attached. Tire: 11 R22.5 x 4 on rear axle Weight (conservative): 80,000 Ibs Tire patch: 74 sq in per tire x 4 = 296 sq in Weight distribution on tire patch is estimated to be 2031bs/in. GRASSPAVE2 PROVIDES 15,940 PSI LOAD CAPACITY. EXCEEDING REQUIRED BASE COURSE ACCOMODATES HEAVY FIRE TRUCK, H-20 LOADING OF 80,000LBS. SEE PAGE 33, ATTACHED LOAD TABLE I believe this proposal complies with the intent of the provisions of the CFC, and that the material, method or work offered is, for the purpose intended, at least the equivalent of that prescribed in the CFC in quality, strength, effectiveness, fire resistance, durability, and safety because: (Use attachments ifnecessary) Grasspave2 product has a greater lifespan and sustain greater liver loads than both asphalt and concrete. It has been used for fire access application since 1982. (see attached details, product literature and narrative). Earl Wilson, BAR architects Architect OWNER, ARCHITECT OR ENGINEER SIGNATURE TITLE DECISION OF THE FIRE MARSHAL ARCHITECT OR ENGINEERS SEAL ❑ Approved ;K Approved with Stipulations ❑ Denied EARL B, WILSON -A Stipulations: C-22028 At all times, required fire apparatus access roads shall be maintained free and * REN. 11-30-2021 clear of any obstructions and shall be maintained capable of supporting fire N apparatus. ' �Q OF CAt-1FO�� DATE FIRE MARSHAL gr a orized designee 07-1 "X'7_0 5116/16 Casey Hartman Acting Riverside County Fire Chief ADDITION NOTES: 1.The design team is proposing to increase the automatic sprinkler system design density for all Light Hazard areas within the clubhouse building. Sprinkler protection for Light Hazard areas will be provided in accordance with the requirements for Ordinary Hazard Group 1 at a density of 0.15 gpm/SF over 1,500 SF per NFPA 13. Maximum spacing for sprinklers will be 130 SF in accordance with the NFPA 13 requirements for ordinary hazard sprinklers. Quick response sprinklers will still be provided in all area that are considered light hazard in accordance with CBC 903.3.2. As a result of the increased sprinkler density proposed for the clubhouse building, the design team requests the maximum hose pull distance be extended to 175 feet (see the attachment for the hose pull distance). (Note provided in Pendry Clubhouse construction set) 2. Technical specifications and installation guidance information from Grasspave2 manufacturer included in building specification manual. See pages 19-26 of attached for copy of Technical specifications. 3. Installation guide, see pages 27-32 of attached. 100% Grass Covered Porous Pavement Grasspave2 Flexible Plastice Porous Pavement Grasspave2 protects and en- hances the environment in three ways: First, made from 100% recycled plastic, Grasspave2 keeps common consumer and in- dustrial products from going into landfills. Second, grass paving directly improves the environ- ment by recharging water tables on site (reducing flooding hazards downstream), reducing sources of oils and solvents from asphalt, absorbing carbon dioxide, and creating oxygen. Third, it en- hances the beauty and quality of the built environment — replacing hot asphalt paved areas with cool, sparking green lawn -like Product Description Grasspave2 has thin -walled independent plastic rings con- nected by an interlocking geogrid structure, which, because it is installed below the surface, is invisible in the completed project. While the rings are rigid, the grid itself is flexible, which makes it easy to install on uneven grades, and reduces usual cut and fill requirements. The rings transfer loads from the surface to the grid structure and engineered base course material below, thus preventing compac- tion of the upper root zone of the grass. A single ring supports small loads, such as shoes; several rings support tires and large loads. The rings also act to contain the root zone medium (sand) and prevent lateral migration away from tires, feet, or other loads. This protects the grass root system, enabling roots to grow deep into the porous base course. The result is healthy, green turf at the surface. One person can easily install the Grasspave2 rolls at a rate of 70m2 (750 ft2) per hour, plus time for base course preparation and grass installation (seeding, sod or sprigging). Step-by-step instructions are included in our Installation Instructions, which accompany each order. Features and Benefits • Allows 100% grass coverage instead of asphalt • Made from 100% post consumer plastic • High strength to weight load -bearing capacity • Supports vehicular and pedestrian traffic • Maximum porosity • Low to zero runoff • Free air/water movement • Permits more trees • Cooler site m • Greater oxygen • Removes air pollutants " N • Can preserve existing trees �' • Helps to meet "Green Coverage Codes" • Fast, low cost installation • Competes in cost with asphalt paving • No gutter and rain system needed • No added land required for detention facilities • Lower life cycle costs —Grass, hydroaeeded or sodded phin) — Sand fill - Grasspave2 -1 in, 2.5 cm — Hydrogrow — Sand and gravel base course - 6 in to 12 in —Compacted sub -grade Specifications Applications • Church/employee parking • Overflow and event parking • Golf cart paths • Residential driveways • Firelanes Unit Size — 20"x 20"x 1" (50 x 50 x 2.5cm) Unit Weight —18oz (510 grams) Strength —15,940 psi (109,906 kPa) Connector Pull Apart Strength (Tensile) - 458 lbf/in Color — Black Resin — 100% recycled HDPE with 3% carbon black Shipped in Rolls (431 sq ft standard, other roll sizes available) 92% Void Space (8% plastic by volume) Invisible Structures, Inc. 1600 Jackson Street, Suite 310 www.invisiblestructures.com Golden CO, 80401 800-233-1510 Fax: 800-233-1522 ©ISI, US Patent #5,250,340 'c q IVIO V, MV T'I lot oil UPDATED! 15,940 p'sr-r2.29 million psf 109,906 kPa 2 Introduction History of Porous Paving Pebbles, cobblestones, and wood decking structures have been used since the dawn of civilization to reinforce where we walk and the roads we use. Little did we realize that these methods had benefits over the modern trends of sealing up the ground with asphalt and concrete. Porous, permeable or pervious paving —whatever you prefer —became a method for addressing stormwater issues in the early 20th century. Concrete turfblock for grass paving began in the mid- 1940s and plastic versions were invented in the late '70s and early '80s. Great advance- ments have occurred in pervious concrete, pervious asphalt, and other permeable sur- faces. We introduced Grasspave2 in 1982, improving upon these earlier concepts. In 1993, Gravelpave2 was unveiled, the only product specifically developed for gravel porous paving. Fast forward to this millen- nium, and Grasspave2 and Gravelpave2 are considered by most, the finest porous pavers developed. Infiltration Porous paving allows rainwater to percolate through the pavement's surface and back into the ground (infiltrating), where the water is cleaned and returned to ground water supplies. Porous paving improves upon impermeable sur- faces, such as concrete or asphalt, which do not allow for this natural filtration. Rain collects airborne and surface pollutants such as sediment, brake dust, chemicals, vehicle exhaust, oil, salts, fertilizers, bacteria, and animal waste. On impermeable surfaces the polluted rainwater runoff (non -point source pollu- tion) is collected, concentrated, and discharged to downstream waters such as streams, reservoirs, and lakes —our drinking water. This runoff also harms vegetation and wildlife with increased water volumes, velocities, and higher temperatures. The Grasspavez and Gravelpave2 systems protect against this dangerous runoff by processing and cleaning the water, thus safeguarding the natural water cycle. State of the Earth Invisible Structures, Inc. has developed an entire line of products to address stormwater and environmental concerns. Rainstoi Slopetame2, Draincore2, and Beachrings2 can work in addition to, or in conjunction with, Grasspave2 and Gravelpave2 to provide your site, home, or office with stormwater and environmental enhance- ments. Our products can store and collect rain, provide erosion and sediment control, efficiently convey and deliver water, and protect natural areas. Grasspave2 large rolls and Gravelpave2 large rolls (notshown)installquicklyandconfonntothe contours oftheground. Advanced Technology The Grasspave2 and Gravelpave2 systems are based on a simple, but impressive technology —a series of rings (cylinders) connected on a flexible grid system. The cylinders are engineered to withstand significant structural loads and the grid provides stability, flexibility, and continuity for large areas. The grid system also has the unique ability to be rolled up for easy shipping, handling and installation. This engineered design allows for any street -legal vehicle (and sometimes larger) to park or drive on our Grasspave2 or Gravelpave2 surfaces. The point load pressure is transferred from the top of the ring, through the fill material and cylinders, to the engineered base course. - g• �r � E • ► � AEI + ; +g " � � z'`a •- � � � 40, + d�.1i8R`'3" .7r51w l+.M • t'it WallamSavannah, GA—Gravelpave2 createsa wheelchair -accessible surface bystabilizinggravel and supporting tine pressure.7%drycement wasmited withgravelbefore frllingrings. Cover photo: Westin Kierland Resort and Spa, Scottsdale, Arizona—Grasspave2 fire lane and Gravelpave2 fire lane (concrete widening). 4 The ring and grid structure is 92 percent void space allowing for the healthiest root zone for grass (in Grasspave2) and more deco- rative gravel (in Gravelpave2) for some of the most attractive paved surfaces around. Less plastic means more natural looking surfaces. This technology also makes for better runoff coefficients and better percolation rates. 120 psi Maximum on Public Highways! Even empty, Grasspave2 and Gravelpave2 will support 2,100 psi The heavier a vehicle, the more axles and tires it needs to support the load being carried. Grasspave2 and ' - Gravelpave2 will meet and exceed all loading criteria. Vehicle Loading Examples: Auto tires: 40 psi Truck tires: 110 psi DC-10 tires: 250 psi F-16 tires: 350 psi Fire truck with outriggers: 78psi (An 85,000Ib. truck distributed to four outrigger pads is equal to 21,2501bs. for each outrigger pad with 1.2' x 18' surhare contact with Grasspave2) All these vehicles are well within our 5,700 psi loading capability. With a sturdy base course design, our rings will easily perform under all conditions. It's also a good design practice to strengthen concrete sidewalks and curbing that will be mounted by fire trucks. CSI 3212 43 Flexible Porous Pavers In 1997 The Construction Specifiers Institute (CSI) came out with a generalized listing (02795) for all porous paving products. However, since performance and application is varied even in the porous paving industry, the 2004 CSI MasterFormat" has adopt- ed a new number .3212 43 Flayible The University of South Alabama, Mobile used Gravelpavez in parking aisles and Grasspave2 in the spaces. Porous Paring, to recognize that: Grasspave2 and Gravelpave2 are in a class by themselves. Best Management Practice Porous paving is recognized as a Best Management Practice (BLIP) by the Environmental Protection Agency, the Center for Watershed Protection, the US. Army Corp of Engineers, and countless other feder- al, state, regional and local authori- ties. In addition. Grasspave2 and Gravelpave2 are often mentioned by name, as the product of choice for many of these agencies. Applications Stormwater Management The Grasspave2 and Gravelpave2 systems can easily handle storm water from an intense storm dropping three inches of rain in less than thirty minutes! In one square meter (40" x 40'1 there are 144 rings, two inches in diameter by one inch high. With one inch of fill in the rings and a standard road base of sandy gravel six Bowditch Point Regional Park, fort Myers Beach, Florida—Gravelpave2 parking bays blend in with the natural surroundings. 6 inches thick, our porous systems will percolate approximately 1/2 inch of rain per hour! A seven-inch section can store 2.4 inches of water (about 20 percent void after compaction). Alternatively, hard surfaces, such as asphalt and concrete, shed 95 percent of storm water. Aesthetics As a designer, engineer, contractor, or homeowner, you can be sure Grasspave2 and Gravelpave2 can deliver a more beautiful surface and add a unique look to a site. Grass simply looks better than asphalt and decorative gravel has been used for centuries in landscaping. Space constraints can be dealt with by combining the beauty of grass or gravel with the utility of paving. Trees and other vegetation not only survive, they thrive with Grasspave2 and Gravelpave2. Porous paving has the ability to deliver water, oxygen and carbon dioxide through the cross sec- tion —all essential to root survival. Concrete and asphalt suffo- cate and starve the root zones of water and air. With Grasspave2 and Gravelpave2, you can now design in as many trees and plants as your site will allow. Grasspave2 and Gravelpave2 prevent com- paction while allowing for ample amounts of water and air. Cars can then drive and park below tree canopies. Saving existing, mature trees is also possible with our products —our structures can come within inches of the mature tree trunk without damage. Our mats have the ability to flex with the tree root growth that would otherwise damage and crack hard surfaces. Environmental Benefits Grasspave2 and Gravelpave2 not only protect the environment, they enhance it. All of our products are made from 100 percent recycled plastic —plastic that goes into improving the environ- ment and not into a landfill. Through bioremediation, porous pavers have the ability to clean pollutants (heavy metals, 96-99 percent; suspended solids, 95 percent; phosphorous, 65 percent; nitrogen, 82 percent, hydrocarbons, up to 100 percent) out of stormwater. Our products also reduce erosion and soil migration, reduce site disturbance, and contribute to airborne dust capture and retention. Cooling the atmosphere and reducing the "urban heat island effect" (cities being up to 10 degrees hotter than undeveloped land) are added benefits of Grasspave2 and Gravelpave2. Both products can mitigate these increased temperatures. In addition, Grasspave2 promotes the conversion of carbon dioxide (green- house gas) into oxygen and has an "air-conditioning effect." Driveways Environmental, economic, and aesthetic enhancements are drawing homeowners and designers to use Grasspave2 and Gravelpave2 in driveways. Most residential driveways are good candidates for our porous duo because of the reduced speed and limited frequency of traffic. Our products can add beauty to residential and commercial driveways. Parking Lots Parking for churches and synagogues, stadiums, arenas, and overflow at shopping centers, campuses, parks and more are ideal for Grasspave2 and Gravelpave2. These sites generally support large numbers of vehicles but only on periodic basis. Stormwater management and green space can be combined with parking, reducing maintenance, real estate, and development costs. A great design idea is combining durable Gravelpave2 drive aisles with attractive Grasspave2 parking bays. Pedestrian, Horse Trails and Bicycle Paths Garden paths, greenhouse aisles, sidewalks, park paths, and wilderness trails paved with Grasspave2/Gravelpave2 provide a stable surface for strollers, bicycles, wheelchairs, and horses. There are no puddles or mud and traction is very good. Tree roots break up hard surface sidewalks, but our mats flex to accommodate such shifts and gradient changes. Plus, with the high proportion of air, roots are discouraged from moving upward. Mountain bikers will not be able to tear up paths reinforced with Grasspave2/Gravelpave2. Our products can resist the destructive forces of mountain bikes, allowing your trails to be reopened to bikes. 1" Fire Lanes f By far, the most common application for Grasspave2 and Gravelpave2 installations is for ` fire lanes. Our long and established history of providing safe, well - constructed fire lanes began in 1982 with our first installa- tion in Snowmass, Colorado, near Aspen Ski Resort. Since then, we have firmly established credibility for - this application. Tests have been conducted by several' fire departments in Aurora, r, Colorado and Irvine, California. Nearly every major U.S. metropolitan area has accepted and used Grasspave2 in a fire lane. You will most " likely find f a fire lane installation r l' in your area. 1 8 Grasspave2 Installation Mats can be rolled out in minutes! 600 m2 (6,000 so per two -person hour': For steps sho%.n below-100 m2 (1,080 so per two -person hour! In, Place and compact sand and gravel base course. Fill rings with clean sharp concrete sand. Rea dy for use after t vm mowing cycles. C] ApplyHydrogrowmixture. Roll out Grasspave2. '-'ram•+.. .. ._a... -..... .. Hydroseed or laysod. Use a regularlawn mower for maintenance. Donotaeratel The Gmsspa Wporouspavementsystem is comprised of sandy gravel base course, Hydrogrowpolymer-fertilizermixture, the Grasspave2 ring andgridstructure, sharp concrete sand, and grass seed or sod. Roll sod with heavy roller. ►�� k • 9 GrasspaveZ Installation Procedures This installation section is only intended as an overview. Please review our GrasspaveZ Technical Specifications (available at www.invisiblestructures com or call 800-233-1510) for comprehensive installation instructions. Excavate a space for the base course as determined by site soils and loading requirements. Place and compact sandy gravel which should be a mixture of clean sharp sand and gravel varying in size but not exceeding 314 of an inch. To check porosity, use a hose to see that water flows into the base and drains away. Add subsurface drainage as necessary to low spots or locations with poor draining soils. Install irrigation lines and sprinkler heads if necessary. Apply the Hydrogrow mixture that is included free with your order. Hydrogrow is a mix- ture of polymer and fertilizer designed especially for our GrasspaveZ system. ' � A .M Roll out GrasspaveZ, aligning the side hole fasteners over the side pegs. The warmth of the sun will relax the plastic so it lays flat. Cut the grid between rings using pruning shears. Incorporate the cut pieces in other areas, as needed, keeping the distance between the rings uniform. Fill rings with clean sharp concrete sand (AASHTO M6 or ASTM C-33) using large rakes and brooms so that the tops of the rings show when done. Lay turf over the rings. On warm days, wet the sand first to lower sand temperature and provide moisture for grass roots. Seeding and hydromulching is also an accepted vegetating method at this stage. Repeated hydromulching/seeding may be necessary. Roll sod with heavy roller to eliminate air pockets and make sure roots are in contact with the sand fill. Water lawn as usual according to climatic requirements. Whether the area has been seeded or sodded, wait to drive on grass until two mowings have been completed, by which time the root system will be established and the sod pieces locked into place. In an emergency such as the need for fire truck access, grass may be driven on immediately after installation. Use a regular lawn mower for maintenance. There should be no paver parts protruding through the surface that would r}.A damage mowers. Do not aerate! f .77) r _ jt •� `, • r f L tea• 4 ". A 1-'% +"� '� y .4P blow -0 ` ��, _._:��' - �•�: p• _ . 4 _�e'��`' . �x�- tom"'• : r .1. �"' _ ,, �: _ . '''.�•• , 10 PON Li Place and compact sand and gravel road base. r rk Roll out Gravelpave2, aligning the snap fit fasteners. Secure mars with anchors provided fwe and type may vary). fill rings with clean gravel, Compact gravel with vibrator miter or flat plate compactor (not shown). Gravelpave2 Installation Gravelpave2 Size/Shape Fill Requirements You will need 1" of graved fill, compacted. Be careful to order enough for the compaction process and choose a gravel size that will nest well into the rings. 11/e Itave found that 11,6" mints crushed stone and sometime -%" with limited small sharp screenings (#40 to #100 screen) works well. Washed gravel will roll within the rings and will also "roll about.." For this reason, we do not recommend pea gravel, even though it is often very attractive. A visit to your local quarry is suggested. We have found that some geological areas of the United States have limited types of sharp gravel available. It has been necessary to import gravel from a neighboring state, but remember the amounts are relatively small — the top one -and -a -quarter inch of the cross sec- tion. Gravel should be as free of fines as possible. To maintain porosity, avoid soft stone materials with low durability that will break easily. Other Fill Materials for Gravelpave2 Please ask our staff for assistance with this category since it is use -specific and often experi- mental. Ground rubber.. crushed glass, crushed brick, and many other materials can be useful as attractive fill materials for various applications. Thermoset (epoxy.. polyurethane, etc.) binders may be cost prohibitive for most projects, but offer unique design possibilities, including clarity, color erdiancement (wet look), flexibility and durability. Our technical support staff will assist with selection of gravel sources. The photographic samples shown on this page will help you narrow your gravel choices. Should you have questions concerning the selection, please submit a small sample for approval prior to specifying or securing the materials. Mats can be rolled out in minutes! Gravelpave2 Installation Procedure This installation section is only intended as an overview. Please review our Gravelpave2 Technical Specifications (available at www.invisiblestructures.com or call 800-233-1510) for comprehensive installation instructions. Prepare sandy gravel base course to a depth as determined by a soils engineer. Compact with a vibrating plate compactor or use a heavy motorized roller for large jobs. To test porosity, water with a hose and check to see that water drains readily through the base course before installing the Gravelpave2 mats. Roll out mats with the grain (in the same direction) so that the snap fit fasteners can be used with neighboring mats. To fit around boxes and curbs, cut the grid between the rings with pruning shears and scissors or a small portable electric hand saw. Fasten the mats together using the snap fit fasteners that are molded into the product inserting the prongs into the rectangular openings. Tuck the fabric underneath the fasteners to keep joints closed. A quarter -inch nut driver head (6 mm) fits nicely over the fastener to compress the pieces together. A piece of lumber placed under the Gravelpave2 mat will provide stability to aid in fastening. Supplied anchors must be used to secure the mats to the base. Hammer anchors with washers at a rate of one anchor per six rings in both directions, Use extra anchors around the perimeter of the Gravelpave2 install and in high traffic areas. Reciprocating hammers can be used to speed up the 4.Amahlolk anchoring ,;; k 11 process. Anchors should be placed inside the rings as close to the center as possible. Begin anchoring from one corner in a radial pattern. Gradually place gravel fill (see suggested fill material on facing page) into rings by using a front-end loader and shaking out the fill as the machine drives forward. Carefully lower the bucket when empty and back up while dragging it above the rings to smooth out the gravel, finishing with a stiff broom. Wheel barrow and shovel works well for small jobs. Contractor tip —you can store excess material for future maintenance, top dressing as may be necessary. Use rakes and/or push brooms to distribute the gravel fill to a level slightly above rings so that compacting the fill will not uncover the rings. Use a vibrating plate compactor or large driving roller again to compact the gravel fill. Additional gravel may be necessary to finish filling the rings. Compact again until the material appears solid in the rings. Wetting the gravel may help it to interlock. Drive on the installation when finished. If car tires make a pattern, there may be too much gravel or it may need additional compaction. It is expected that tops of the rings may be visible. If sides of the rings show, then add more fill material and repeat the compaction process. 400 Jold 12 Golf Industry Gravelpave2 and Grasspave2 golf cart paths give the look of a natural path through trees, along fairways, and around greens. The flush surface requires no trimming or edging. "fraction is excellent with Gravelpave2 and Grasspave2 traction is slightly better than grass. Grasspave2 and Gra.velpave2 can enhance your golf earl: staging area, pedestrian traffic area, parking lot, road shoulder, and mainte- nance yard. Automobile Dealership Displays Car dealerships have discovered that Grasspave2 and Gravelpave? are perfect for automobile dis- play areas. Dealerships now, have an option when it comes to adding paved areas for car transport and display. Dealerships like the 'soft' attractive look grass and decorative gravel provide. Utility and Maintenance Vehicle Access Providing your site with impor- tatit utilitarian functions with- out compromising beauty is simple. Grasspave2 and Gravelpave2 can incorporate a structural road without: inter- rupting your landscaping. No obtntsive concrete or asphalt access roads are necessary to get to window washing areas, pump stations, microwave tow- ers, tanks, or electrical boxes. Unique Applications Our mats are installed in some unique and interesting places: Helicopter landing pads, race car display areas, outdoor amphithe- ater seating, under picnic tables, under concrete pavers (support), airplane display and transport, cemetery marker reinforcement, eave drip lines and more. Installations are not limited to traditional paved areas. Grasspave2 Characteristics Lab Compression Test Results Load -bearing capacity of filled Grasspave2/Gravelpave2 rings vs. concrete, and vehicle loading examples Grasspave2lGravelpave- 5,720 psi capacity (filled) Concrete-3,000 pst capacity 0 M N 1 ti o Large Rolls Our patented systems have a shipping, handling and installation advantage as well —large rolls, Our standard roll size (model 2020) covers 431 sq. ft. (40 tit?) and weighs 192 pounds (87 kg). Other roll sizes are available. Installers of our products have repeatedly commented that they enjoy the easy installation. Rolling out Grasspave2 is similar to rolling out carpeting and coverage is fast and effi- cient. The mat system can be easily cut to fit around trees. irrigation, curbing, or other terrain. The rolls have snap -fit _ connectors to attach to adjacent rolls. making one unified, con- tiguous system. This united mat system adds stability and continuity in design. Grasspave2 q can just as easily be snapped to Gravelpave2 to add stability and product variation. S Runoff Comparison Chart Runoff coefficients, Grasspave2/Gravelpave2 and 100% sandy gravel base over various soil types 90% Asphalt 80% 70% 60% 50%t; 40% 30% 20% 10% GrauPa" tGravelpaver overclay aver sand/10am Grasspave�lGravelpav 0% 1 2 3 4 5 6 7 8 9 10 11 12 Inches of Rain During 24 Hours Calculations include GP21WIplaced over 6" of sandy gravel base course, laid over native sods indicated. Ring and Grid Structure Grasspave2 is by most accounts the best flexible grass paver made today. Its unique ring and grid structure allow for flexibility, stability, and exceptional grass growth. With 92 percent void space for healthy roots and 100 percent grass coverage, Grasspave2 is the industry's preeminent choice. Our installations are hard to find because they are invisible! With so little plastic near the crown of the grass, the blades of grass are not smashed by prod- uct. Root development is not interrupted from spreading laterally. The rings are strong and rigid, keeping grass root systems pro- tected from harm. The roots grow directly downward, deep into the sandy gravel base course. Hydrogrow Another reason Grasspave2 is the industry leader is the addition of Hydrogrow soil amendment, which is supplied with ,your order. Hydrogrow is engineered to help grass grow in our sand based root zone. The results are amazing and our Grasspave2 areas often look healthier than surrounding turf. By using this special mix- ture in the sand, porosity will be maintained, turf will be attractive, and aeration will not be necessary, Sand Fill Grasspave2 is the only grass paver on the market specifying sand as part of its cross section. Sand is the best medium to pro- vide water and air to the roots and still provide high compres- sive strength. The United States Golf Association uses sand for every USGA golf course and nearly every professional and colle- giate turf athletic field uses a sand cross section as well. Topsoil (or other organics fill material) in the rings will eventually compact and damage the root zone. Sand negates the need for mechanical aeration, which can damage Grasspave2 and other grass pavers. Strength When Installed When installed over a thick base course and compacted to 95 percent modified Proctor, sand -filled rings can support 5,700 pounds per square inch (psi) without deflection or compromise to safety. The cylinder is the strongest shape to support compressive loads because it has no corners. Supporting heavy loads with the rings allows us to use less plastic in the product creating a 92 percent void area for root development, combined with strength! Less plastic means a lower cost for you. 14 Traffic Frequency Grass as a surface material can withstand from two to six (varies with grass species and environmental conditions) trips daily over the same spot. This suggests that most parking applications we pave with asphalt today could be paved with Grasspave2 instead. Vehicles can remain parked on grass for extended periods of time, provided some relief can be given for a few days for the grass to recover. Lifespan Grasspave2 has a projected lifespan of 60 years. Compared to asphalt with a lifespan of 15 years; and concrete with a lifespan of 25 years, Grasspave2 will save you money on replacement costs. r � r� Irrigation { Grass needs water and you may need to have irrigation installed. Grasspave2 has a sand based root zone which usually requires slightly more water than a normal topsoil or organic root zone. If golf courses in your area use irrigation systems, you probably should in your Grassapave2 installation. Gravelpave2 Characteristics Fabric, Ring and Grid When we developed Gravelpave2 in 1993, our goal was to provide designers a second option for a porous pavement that can tolerate high frequency and low -speed traffic. By molding our ring and grid structure onto a non- woven polyester filter fabric, we were able to create a new r) S Tan, Bla , Should the fasteners of one mat not align over the distance of another mat, then anchor pins (or eight inch ring shank nails and large washers) can be used to secure the mats along the seam. Forcing the alignment can cause the mats to ripple and not lay down evenly. Traffic Frequency Gravelpave2 has no limits on frequency or duration of traffic on the system. Park or drive as often as you like on Gravelpave2. However, speeds should be kept at or below about 20 mph (30 km/h). t indard colors include: ck Pewter Grey Terra Cotta 1 Durability Grasspave2 and Gravelpave2 are made from flexible High Density Polyethylene (HDPE) plastic 3 with UV inhibitors, which } withstands repeated r f freeze -thaw cycles and l continuous subzero tem- peratures without crack- ing. HDPE resists aggres- sive chemicals such as road salts, motor oils and fuels. HDPE is highly abrasion -resistant and is 4 unaffected by extremes in pH. A well - maintained Gravelpave2 installation will last 25 years in most climates. Invisible Structures —Standard Product Roll Sizes Model m It m ft m ft m2 W kg lbs 1010 1 33 10 328 0.5 1.7 10 108 22 48 1020 1 3.3 20 65.6 0.8 2.7 20 215 44 96 1520 1.5 4-9 20 65-6 0-8 2.7 30 323 65 144 2020 2 6.6 20 65.6 0.8 2.7 40 430 87 192 2520 2.5 8.2 20 65.6 0.8 2.7 50 538 109 240 Rolls ran be installed manually (2 people advised). Rolls apply to Grasspave2, Gravelpave2, Draincore2, and Slopetame2. product that contains gravel and prevents particle migration and rutting. Gravelpave2 is the only system specifically designed for aggregate containment porous paving. The cylinders displace the load onto an engineered base course and hold the decorative gravel in place. The fabric keeps the top -dress gravel from compacting into the road base, acts as a weed and vegetation barrier, and suppresses dust. Traditional pavements, including gravel roads, are designed to shed water and keep it away from the pavement's cross-section. Gravelpave2 is designed to do the opposite —welcoming water down through the system. Plus, Gravelpave2 will not rut, wash- board, or puddle like traditional gravel roads. Snap -Fit Fasteners Designed into Gravelpave2 is a snap -fit fastener, a two -pronged arrow that fits into a rectangular slot. Simply push the slot over the prongs to easily snap together panels of Grasspave2. To take them apart, just squeeze the prongs together and lift off the slot. Aesthetics Part of what draws many designers to use Gravelpave2 is the ability to have an area maintain a natural look. any times native soils or gravel can be used as fill material, comple- menting surrounding areas. Gravelpave2 is available in four standard colors —black, tan, gray, and terra cotta (custom colors are available at addition- al cost). Ring colors are intend- ed to blend with the gravel color so they will be less visible should some portion of the rings show. A small amount of excess stone fill should be left above the top of the rings to provide visu- al cover and additional UV protection, This excess will migrate, but usually not very far. Size and Shape Requirements for Gravel Fill You will need one and a quarter inch (3.2 cm) of gravel fill, before compaction. After compaction the gravel should be only be slightly higher than the rings ('/a inch, 3 mm above). The following criteria for gravel fill will make the most of the systems performance: • Hard —resistant to breaking, crushing or crumbling • Sharp and angular (do not use rounded pea gravel) • Clean, washed (free of fines) • Size 3/16 to % inch (5 mm to 1 cm) Other fill material may be used in certain situations, but may be considered use -specific or experimental. Please consult with our technical support staff regarding fill material not meeting the above criteria or for installations requiring "binders." 16 Dust Suppression Dirt and gravel roads have the potential to kick up dust and dirt when traversed. Many communities have regulations limiting or eliminating gravel surfaces from new construction. Rest assured, if you design a Gravelpave2 surface you will be getting a virtually dust - free surface. The clean and washed fill material required to fill the rings will not have any more dust than an asphalt -paved surface. Gravelpave2's geotextile fabric will prevent the dust -sized particles contained within the base material (existing gravel surface or dirt), from being displaced by moving tire or wind forces. Industry Advantages Economic Advantages Whether you are an engineer, architect, landscape architect, contractor or homeowner you will be concerned with the cost of you project. Grasspave2 and Gravepave2 will save you money. Our products will save on design costs, installa- tion costs, component materials, maintenance/operations expenses and lifecycle costs. We can find a way to reduce your site expenses with our porous pavers. rutting in this ADA accessible trail. When designing, you may be able to eliminate or reduce storm - water filters, detention basins, conveyance lines, modifying grading requirements, or many other "necessities" associated with asphalt or concrete. A great deal of your stormwater mitigation plan can be built into Grasspave2 and Gravelpave2. Installers have been astounded by the speed and efficiency for which large areas can be accommodated by our large rolls. Unrolling our mats, snap fitting, and cutting is easy and requires no special machinery Please view our technical specifications (from wAw.invisiblestructures.com, call 800-233-1510, or avail- able through our partner network) for the installation procedure. A brief installation overview is also on pages 8 and 10). Compacted sandygravel road base placed above compacted subgrade, 95% modified Proctor density. Gravelpave2 rolls are laid pinned, and filled with clean, sharp gravel. In addition to cost savings in the design phase, you may be able to eliminate other components during installation such as root protection for trees, grates, manholes, curbing, and tree and vegetation removal costs. Maintenance and operations costs are significantly reduced over asphalt and concrete surfaces. A. (Andy) E. Lindsey, Director of Grounds Maintenance. University of South Alabama, in his written analysis dated February 18, 1999, compared the cost of our porous systems to asphalt pavement using historical data from university records. The conclusion was a $56,000 savings over 20 years, by using Grasspave2 and Gravelpave2. Our products can save you the most money by combining your surfaces' uses into one area. Multiple surface use means savings on real estate, design costs, maintenance, insur- ance and more. You can have a fire lane that doubles as "green space" for employees or visitors, combine a parking lot with a bio-swale and stormwater mitigation system, and expand your lawn into the driveway. The Grasspave2 and Gravelpave2 installations at Reliant Stadium, Houston, Texas, pull quadruple duty, providing over seven acres of parking, stormwater mitigation, required "green space," and an outdoor festival site which generate additional income. As mentioned above, Grasspave2 and Gravelpave2 have a longer lifespan than asphalt. Compound the above savings with the longer lifespan, and you can have a lifecycle cost which can save thousand of dollars on even moderately sized installations. Competitive Advantages Our porous pavers not only have advantages over impervious surfaces, we are proud to compete with any other plastic porous pavers manufactured. Our products are the strongest on the market 5,721 psi installed (39,273 kPa, 823,844 psf or 7,414,416 psy), or 2,100 psi empty. Grasspave2 and Gravelpave2 have For Grasspave2. Compacted sandygravel road base placed above compacted subgrade, 95%modified i '.-— 18 92 percent void space for the best root development and grass coverage (Grasspave2) and the most volume available for desired fill (Gravelpave2). Most other plastic pavers come in rigid unit blocks, which are cumbersome to install and difficult to cut and shape. Grasspave2 and Gravelpave2 rolls are considered the favorite to work with by installers, for the flexibility, continuity, and speed of installations. Grasspave2 is the only product on the market specifying sand infill for the grass roots. Sand is recom- mended as the infill of choice for grass pavers by Professor Bruce K.Ferguson, Unit/ of Georgia, author of the book, "Porous Pavements." Competing Technologies Porous paving technology has made great strides not only in flexible plastic pavers but in other areas as well. Permeable asphalt, permeable con- crete, interlocking unit blocks, rein- forcement mats, and concrete grid pavements, have all improved and advanced to meet the growing demand for environmentally friendly technolo- gies. It is Invisible Structures' firm belief that you should use porous paving, even if it is not our product line, whenever possible. The more you use these technologies, the better accepted they become: If you have to pave, porous pave! Invisible Structures also contends that while these competing tech- nologies have their place, in most instances, our Grasspave2 and Gravelpave2 systems outperform, last longer, require less maintenance, look better, and are easier to install. Check with our technical specialists at 800-233-1510 for the latest data. Designing for Grasspave2 and Gravelpave2 Design for Use There is an area in your development, site, or home that will most likely ben- efit from Grasspave2 and Gravelpave2. We advise that you take a look at prop- er use patterns, site conditions, and other specifications to get full advan- tage and long life out of our products. Invisible Structures, 800-233-1510, is available for preliminary design assistance and consultation. Please note that other porous paving systems are NOT interchangeable with Grasspave2 or Gravelpave2, consult our technical specifications for full installation instructions. Considerations for Design: • High use, low speed, and unlimited traffic volume is optimal for Gravelpave2 • Low to moderate use, low speed, with recovery time is perfect for Grasspave2 or Gravelpave2 Vancouver City Works Yard, Vancouver, British Columbia —main staff parking lot done in Gravelpave2. Fire lane, San Mateo, CA —Many native grasses and other attractive vegetation can be grown in Grasspave2. • Keep the porous paving area free of sediment and erosion from adjacent areas as they can cause drainage and aesthetic issues. Extra care should be taking for use in swales or berms. • Slope should be considered. Grasspave2 and Gravelpave2 perform the best for all vehicles when the slope is no greater than 8 percent. Light vehicles (golf carts), bicycles, and pedestrian areas can have up to a 20 percent slope. Grasspave2 in fire lanes should not exceed five percent (consult your local fire departments). • Check the permeability of existing underlying soils. Percolation rates should be .64 cm to 1.3 cm of water per hour (EPA guidelines). • The water table should be about three feet (approx. 1 m) below base course in most instances. • Bedrock should not be closer than two feet (0.6 m) below base course. • Avoid use of Grasspave2 and Gravelpave2 in areas where high- speed acceleration or braking and turning occur. Examples are entrances and exits to parking lots that connect to higher speed roads. If your site varies from these condi Lions, please consult ISI directly, 800-233-1510, as some conditions can be overcome with design and component adjustments. Base Course Design Calculating the depth and composition of materials for the base course incor- porates the same design criteria as for other pavements: • Load -bearing capacity of native (or fill) subsoil, • Plasticity or impact of moisture on strength and longevity, • Frostheave potential, and • Traffic load, frequency and/or duration. Sample Base Course Depths Please consult with a soils engineer for site -specific base requirements. Generally, the depth that is used under asphalt will be the requirement under Grasspave2/Gravelpave2. Golf carts and pedestrian traffic may require nothing over sandy gravel soils, and just two to four inches of base course (5-10 cm) over very weak soils. Cars usually need a six- to eight -inch base course (15-20 cm). Buses, trucks, and fire engines can easily require eight to 12 inches (20-30 cm) or more. The use of geotextiles, below the base is not required, but will prevent integration with subsoils and is strong- ly advised in areas of clay or silt soils and frost heave. Do not use 100 percent limestone base as limestone will compact and become impervious —If limestone must be used, mix with 25-30 percent sand (AASTO M6 or equal). zo Bedding Sand Not Necessary Do not use a sand setting base with our products. Unlike concrete pavers, bricks. and other rigid pavers —our Grasspave2 and Gravelpave?, are flexible and do not require sand to level. Edge Protection For aesthetic and maintenance considerations, you may want to design in a durable edging material to separate our porous pavers from adjacent areas of turf or to simply delineate a fire larie or path. With Gravelpave2, an edging can prevent vegetation front encroaching onto the system and can prevent the gravel fill from migrating at the edge. Steel, aluminum, wood, brick. or con- crete are all acceptable edging materials. Keep the edging flush or slightly higher than the porous paver grade. Maintenance and Operation Grasspave2 Maintenance Irrigation is required in dry climates. Any popular pop-up system can be used. Simply cut out rings to reveal the irrigation head. If golf courses in your area use irrigation systems, you probably should in ,your Grasspave2 installation. Be careful riot to over - water as this will encourage shallow root development. Fertilize once a vear with an NPK slow -release fertilizer that contains trace elements. There are many brands on the market. Do not aerate! You'll end up with product damage. When installed using sand in the rings, there will tint. be a compaction problem. Be careful tint to use clay -based sods in pedestrian or vehicular traffii aiFas--u c: sandv soil sod, or seed and mulch. There seems to be no problem with sod selection for fire lanes. If the Grasspave2 area has just been seeded or sodded, drive on it only in an emergency. Gravelpave2 Maintenance Potholes will only appear if the base course has riot been compacted properly before laying the rings or if the base material is allowed to mix into clay soils below (use nonwoven fabric to keep separate). Should this occur, remove a section by vacuuming the gravel from the rings, unfasten the snap fit fastener, bring the base course to the proper grade and compaction, put the G1,avelpave2 square back in place. anchor, and fill to the top of the rings. Seasonally check the rings in high -traffic areas and entrance lanes for lower levels of fill and replace by sweeping gravel from other areas to bring it level again. Leaves should be raked or vacuumed and not allowed to decal. Organic matter will stimulate weed growth and reduce porosity.'ro attack any occa- sional weeds that may locate within the Gravelpave2 installation, simply spray them with a weed killer (such as Roundup7`4) and remove them when dead. Cold Climate Concerns Porous pavement thaws faster than conventional pavements because it allows melted water to flow directly through the pavement, increasing the temperature in the cross-section. Grasspave2 and Gravelpave2 are made from flexible High Density Polyethylene (HDPQ plastic with UV inhibitors, which withstands repeated freeze -thaw cycles and continuous subzero temperatures without cracking. Private Residence, Houston, TX—Grasspave2supported grass sections in this custom home driveway. 22 Fire departments usually require you to plow snow that is over three inches deep. (7.5 cm). Consult with your local fire department for their guidelines. Educate your snow removal crew to take care not to have the plow blade make contact with the Grasspave2 or Gravelpave2 systems. Experienced snowplow drivers can leave a thin layer of snow on the systems or they can attach skids (3/a inch-2 cm) to the bottom of the blades. Sales and Technical Support Partners Invisible Structures, Inc. welcomes the opportunity to review designs and answer technical questions. Design details, technical specifica- tions, white papers, and other support material may be downloaded from our web site. See a comprehensive list of project profiles and case studies at wwwinvisiblestructures.com. In addition to the high -quality, professional, experienced staff at our main headquarters in Colorado, we have excellent partners represent- ing their geographical areas. They are prepared to assist you locally, at all levels, with your project needs. Please contact us or check our web site for your partner name and information. Contact Information Invisible Structures, Inc. 1600 Jackson St. Suite 310 • Golden, Colorado 80401, USA 800-233-1510 overseas and locally 303-233-8383 Fax 800-233-1522 overseas and locally 303-233-8282 www.invisiblestructures.com email: sales@invisiblestructures.com Grasspave2 and Gravelpave2 Patent No. 5,250,340 Held by William Bohnhoff, ASLA. Copyright © 2006 Grasspave2 is used as a cool, stable surface for picnic tables at a communitypool. Cityof White Rock Operations, White Rock, British Columbia—Grawipave' is used in the main drive aisle of the works yard and Grasspave2 is used for the parking bays. Gravelpave2: Available Grasspave2and inseveralrollsizes. Gravelpave2:Reusable Squares weigh 1.97kg snap connector requires 4. a' (4.341b) each. _ -: 5lbs to connect and resists 70lbs of Colors: Cashew Brown, pull -apart force. Black, Pewter Grey, Terra I t r Resin: HDPE. ' I Strength: 401 kg/cm2 _ rq .6. (5,710 psi). 2.3. 8.3. 76.1rm 25an 50,rpwres ry9.7"J 24 Beachrings2, a portable and re -usable plastic boardwalk system, provides an attractive, comfortable, and slip resistant surface for equal access to beaches. Beachrings2also works well for temporary vehicle access over mud and sand. '�_, - - Dramcore2 conveyance layer is used for advanced subsurface and green -roof applications. Areplacement forantiquated french drains, Draincore2 can maximize drainage (58gpm per foot width) and minimize costs. Rainstoref is the newstandard in efficient sub -surface storm water storage. Rainstore3 is modular and stackable for versatile site design. Rainstore3 is 94% void space and can be designed fordetention, retention, or water harvesting for re -use. + .40 �. Slopetame2—much more than an erosion control blanket or mat —a completely integrated system ofrings, grid, fabric, anchors, and vegetation to control erosion on some of the toughest slopes, channels, Mies and more. Quick Reference Guide for Grasspave2 and Gravelpave2 AIM- I pave pave Description Connectable ring and grid system Connectable ring, grid, and integrated fabric Also Included Hydrogiow polymer —exclusively for Geotextile fabric molded to gild (exclusive to Giasspave2 Gravelpave2) and anchors Available in Large, Flexible Rolls Yes, various sizes —see roll chart page 14 Yes, various sizes —see roll chart page 14 Colors Black Black, gray, tan, terra cotta, custom colors extra Components Needed for System Base course, sand, labor, sod or seed Base course, 11/4" (3.2cm) of'hs" to'/9" (irrigation is recommended) decorative gravel, and labor Tiaffic Low speed, intermittent to moderate use Low speed, unlimited use Compressive System Strength Filled 5,721 psi (39,273 kPa). Filled: to 5,721 psi (39,273 kPa) Empty 2,100 psi (14,470 kPa) Empty: 2,100 psi (14,470 kPa) Life Span 60 years 25 years Recommended Maximum Slope 5% fire lanes, 8% cai/light truck, 15-20% golf 5% fire lanes. 8% car/light truck: 15-20% golf carts, pedestrian use, and trails carts, pedestrian use, and trails Stormwater Sint age Yes Yes Clean Pollutants through Bioremediation Excellent Good Air -Conditioning Effect Yes No Heat Island Mitigation Yes —thermal conductivity, heat storage capacity, Yes -thermal conductivity, heat storage capacity, density, albedo ( 40) and emissivity density albedo (varies) and emissivity Reduces Runoff and Non -Point Source Pollution Yes Yes Reevcled Content 100% recycled HDPE plastic 100% recycled HDPE plastic, remnant fabric Erosion Control Yes Yes Airborne Dust Capture and Retention Excellent Good Promotes and Retains Tree Growth Yes Yes Recharges Groundwater Yes Yes 1600 Jackson St., Suite 310, Golden, CO 80401, USA 800-233-1510 • Fax: 800-233-1522 � 1 I Overseas and locally: 303-233-8383 • Fax: 303-233-8282 www.invisiblestructures.com email: sales@invisiblestructures.com Gravelpave2 and Grasspave2 Patent No, 5,250,340 held by William Bohnhoff, ASLA Copyright c 2006 NVISI BLE April 2015 STRUCTURES" Invisible Structures, Inc. 303-233-8383 www.invisiblestructures.com Grasspave2 Product Specification (CSI Format) Notes: This product guide specification is written according to the Construction Specifications Institute (CSI) Format, including MasterFormat (1995 Edition), SectionFormat, and PageFormat, contained in the CSI Manua! of Practice. The section must be carefully reviewed and edited by the Engineer to meet the requirements of the project and local building code. Coordinate with other specification sections and the drawings. Delete all "Specifier Notes" when editing this section. SECTION 32 12 43 POROUS FLEXIBLE PAVING (Formerly 02795 Porous Paving) Notes: This section covers Grasspave2 Porous Pavement System from Invisible Structures. The system provides vehicular and heavy load support over grass areas while protecting grass roots from harmful effects of traffic. The major components of the complete system are the Grasspave2 units, an engineered base course, Hydrogrow soil amendment/fertilizer, sand, and grass from seed, hydromulch, or sod. Consult Invisible Structures, Inc. for assistance in editing this section for the specific application. PART1 GENERAL 1.1 SECTION INCLUDES A. Porous pavement system. 1.2 RELATED SECTIONS A. Section [31 20 00 — Earth Moving] L _ - 1• B. Section [33 46 00 — Subdrainage] L _ _ - 1• C. Section [32 10 00 — Bases, Ballasts, and Paving] Notes: Edit the following list as required for the project. List other sections with work directly related to the porous pavement system. D. Section [32 30 00 - Site Improvements] E. Section [32 90 00 Planting] [ _ _ - 1. F. Section [32 92 00 — Manufacturers of Turfs and Grasses] G. Section [32 80 00 — Irrigation or Section 32 84 13 — Drip Irrigation] GB/CSI-32 12 43 APRIL 2015 PAGE 1 1.3 REFERENCES A. ASTM F 1951-08 Standard Specification for Determination of Accessibility of Surface Systems Under and Around Playground Equipment. B. ASTM D 638-10 Standard Test Method for Tensile Properties of Plastics C. ASTM C 33 Standard Specification for Concrete Aggregates D. AASHTO M6 Standard Specification for Fine Aggregate for Hydraulic Cement Concrete 1.4 SYSTEM DESCRIPTION A. The Grasspave2 porous pavement system provides vehicular and pedestrian load support for grass areas, while protecting grass roots from harmful effects of traffic. B. Major Components of the Complete System 1. Grasspave2 units, assembled in rolls. 2. Engineered sand and gravel base course. 3. Hydrogrow soil amendment and fertilizer, supplied with Grasspave2. 4. Sand fill or USGA greens mix. 5. Selected grass from seed, hydroseeding/hydro-mulching, or sod. 6. Selected topsoil (only for seeded installation). 7. Mulch (needed only for seeded or hydroseeded installations). C. The Grasspave2 grass paving units, sand, and base course work together to support imposed loading. D. The Grasspave2 grass paving units, Hydrogrow, and sand fill contribute to vegetation support. 1.5 SUBMITTALS A. Submit under provisions of Section 01 30 00. B. Shop Drawings: Submit design detail showing proper cross-section. C. Samples: Submit manufacturer's sample of Grasspave2 10" x 10" section of Grasspave2 material. D. Installation Instructions: Manufacturer's printed installation instructions. Include methods for maintaining installed products. E. Certificates: 1. Manufacturer signed certificate stating the product is made in the USA. 2. Submit Material Certificates for base course and sand (or USGA mix) fill materials 3. Product certificates signed by the manufacturer certifying material compliance of polyethylene used to make Grasspave2 units. 4. ISO Certificate certifying manufacturer's quality management system is currently registered to ISO 9001:2008 quality standards. F. LEED Submittals: Provide documentation of how the requirements of Credit will be met: 1. List of proposed materials with recycled content. Indicate post -consumer recycled content and pre - consumer recycled content for each product having recycled content. 2. Product data and certification letter indicating percentages by weight of post -consumer and pre - consumer recycled content for products having recycled content. 3. Description of Grasspave2 in stormwater design to limit the disruption of natural hydrology by reducing impervious cover, increasing on -site infiltration, reducing or eliminating pollution from stormwater runoff and eliminating contaminants. 4. Designing elements for Grasspave2 to limit the disruption and pollution of natural water flows by managing stormwater runoff. 5. Documenting the use of Grasspave2 to reduce heat islands to minimize the impact on GB/CSI-3212 43 APRIL 2015 PAGE 2 microclimates and human and wildlife habitats. G. Substitutions: No material will be considered as an equivalent to the Grasspave2 unit specified herein unless it meets all areas of this specification without exception. Manufacturers seeking to supply what they represent as equivalent material must submit records, data, independent test results, samples, certifications, and documentation deemed necessary by the Specifier to prove equivalency. H. Manufacturer's Material Certification: Product manufacturers shall provide certification of compliance with all applicable testing procedures and related specifications upon written request. Request for certification shall be submitted by the purchasing agency no later than the date of order placement. I. Product manufacturers shall also have a minimum of 30 years' experience producing products for porous pavement systems. Manufacturer Quality Certification: ISO Certification certifying manufacturer's quality management system for its Grasspave2 system is currently registered to ISO 9001:2008 quality standards. Any alternate materials submitted shall provide a certification that their porous pavement system manufacturing process is part of an ISO program and a certification will be required specifically stating that their testing facility is certified and in accordance with ISO. 1.6 DELIVERY, STORAGE, AND HANDLING A. Store products in manufacturer's unopened packaging until ready for installation. B. Protect Grasspave2 units/rolls from damage during delivery and store rolls upright, under tarp, to protect from sunlight, when time for delivery to installation exceeds one week. C. Store Hydrogrow in a dark and dry location D. Handling: Protect materials during handling and installation to prevent damage 1.7 MAINTENANCE SERVICE Notes: Once healthy turf has been established, the cell wall structure will have minimal visibility when proper turf maintenance practices are followed. A. Installer responsible for maintenance of grass plants — water/irrigation, fertilizing, mowing — for one growing season. DO NOT AERATE. See Grasspave2 Maintenance Guide from Invisible Structures B. System to be maintained by , after one growing season. 1.8 Project Conditions A. Maintain environmental conditions within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits. B. Do not begin installation of porous pavements until all hard surface paving adjacent to porous pavement areas, including concrete walks and asphalt paving, is completed. C. Install turf when ambient air temperatures is at least 55 degrees F (13 degrees C). D. In cold weather, do not use frozen materials or materials mixed or coated with ice or frost, and do not build on frozen base or wet, saturated or muddy subgrade. E. Protect partially completed paving against damage from other construction traffic when work is in progress. F. Adequately water sod or grass seed to assure germination of seed and growth of root system. G. Grass coverage on the sand -filled Grasspave2 rings must be completed within one week: See Part 3 Execution. H. DO NOT DRIVE, PARK ON, or use Grasspave2 system for two or three mowing cycles until grass root system has matured (about 3 to 4 weeks for sod or 6 to 8 weeks for seeded areas). Any barricades constructed must still be accessible by emergency and fire equipment during and after installation. GB/CSI-321243 APRIL2015 PAGE3 1.9 LIMITED WARRANTY A. Invisible Structures, Inc. (ISI) warrants to its purchasers that all products furnished by ISI will be free from defects in material and/or workmanship. B. This warranty shall be extended for a period of five (5) years following the date of shipment by ISI. C. Providing a written claim is presented to ISI within the warranty period and after inspection by ISI showing the materials have failed under this warranty, all defective materials shall be refurnished under this warranty, at no charge, excluding re -installation costs. This in lieu of all other warranties expressed or implied and is the sole warranty extended by ISI. D. Our liability under this warranty is limited to the refurnishing of materials and does not include any responsibility for incidental, consequential, or other damages of any nature. PART2 PRODUCTS 2.1 MANUFACTURERS A. Acceptable Manufacturer: Invisible Structures, Inc., which is located at: 3510 Himalaya Rd. Suite 200 ; Aurora, CO 80011; Tel: 303-233-8383; Web: www.invisiblestructures.com. B. Substitutions: Not permitted. 2.2 GRASSPAVE2 A. Composition: 1. Manufactured in the USA. 2. High density polyethylene (HDPE): 100 percent recycled materials. 3. Color: black 4. Color Uniformity: Uniform color throughout all units rolls. 5. Carbon Black for ultraviolet light stabilization. 6. Hydrogrow soil amendment and fertilizer, provided by manufacturer with Grasspave2. B. Performance Properties: 1. Maximum Loading Capability: 15,940 psi (2.29 million psf, 109,906 kPa) when filled with sand. 2. Wheelchair Access testing for ADA Compliance: Passing ASTM F 1951-08. 3. Wheelchair Access testing for ADA Compliance: Passing Rotational Penetrometer testing. 4. Tensile strength, pull -apart testing: 458 Ibf/in from ASTM D638 Modified. 5. System Permeability (Grasspave2, sand, base course): 2.63 to 38.55 inches of water per hour. 6. Effective Imperviousness (E.I.): 10%. C. Dimensions (individual units are assembled and distributed into rolls): 1. Roll area: From 108 sq ft (10 sq m) to 538 sq ft (50 sq m), in 108 sq ft (10 sq m) increments 2. Roll Widths: From 3.3 ft (1 m) to 8.2 ft (2.5 m), in 1.6 ft (0.5 m) increments. 3. Roll Lengths: From 32.8 ft (10m) to 65.6 ft (20 m), in 3.3 ft (1 m) increments. 4. Roll Weights: From 41 Ibs (19kg) to 205 Ibs (93kg), in 41 Ibs (19 kg) increments. 5. Unit Nominal Width by Length: 20 inches by 20 inches (0.5 m by 0.5 m) or 40 inches by 40 inches (1 m by 1 m). 6. Nominal Depth: 1 inch (2.5 cm) - for rolls and individual units. 7. Unit Weight: 18 oz (510 g) or 5 lbs. (2.27 kg). 8. Volume Solid: 8 percent. M�-Y&JIlt=1�jI�j/_11IIl=1dl,1I&I GB/CSI-3212 43 APRIL 2015 PAGE 4 Notes: All measurements are subject to manufacturing tolerances, unless otherwise specified. A. Base Course: Sandy gravel material from local sources commonly used for road base construction (recycled materials such as crushed concrete or crushed asphalt are NOT acceptable). 1. Conforming to the following sieve analysis and requirements: a. 100 percent passing sieve size 1 inch (25 mm). b. 90-100 percent passing sieve size 3/4 inch (19 mm). C. 70-80 percent passing sieve size 3/8 inch (9 mm). d. 55-70 percent passing sieve size #4. e. 45-55 percent passing sieve size #10. f. 25-35 percent passing sieve size #40. g. 3-8 percent passing sieve size #200. 2. Provide a base course material nearly neutral in pH (range from 6.5 to 7.2) to provide adequate root zone development for turf. 3. Material may be either "pit run" or "crusher run." Avoid using clay based crusher run/pit run. Crusher run material will generally require coarse, well -draining sand conforming to AASHTO M6 or ASTM C 33 to be added to mixture (20 to 30 percent by volume) to ensure long-term porosity. 4. Alternative materials such as crushed shell, limerock, or crushed lava may be used for base course use, provided they are mixed with sharp sand (20 to 30 percent) to ensure long-term porosity, and are brought to proper compaction. Without added sand, crushed shell and limerock set up like concrete and become impervious. 5. Alternative size and/or composition of base course materials should be submitted to Invisible Structures, Inc. (Manufacturer) for approval. B. Sand Fill for Rings and Spaces Between Rings: Clean sharp sand (washed concrete sand). Choose one of the following: 1. Coarse, well -draining sand, such as washed concrete sand conforming to AASHTO M6 or ASTM C-33. 2. United States Golf Association (USGA) greens, section - sand mix "The Root Zone Mixture." C. Turf Conditioner: Hydrogrow a proprietary soil amendment manufactured by Invisible Structures, Inc. and provided with Grasspave2. NO SUBSTITUTIONS. Notes: Use grass species resistant to wear by traffic generally a Blue/Rye/Fescue mix used for athletic fields in northern climates, and Zoysia, Fescue, or Bermuda types in southern climates. Check with local sod and seed suppliers for preferred mixtures. Dedicated fire lanes can use same grass species used on surrounding turf. Parking applications require greatest wear -resistant species possible, generally available only by seed or hydroseeding/hydro-mulching. D. Grass — Choose either sod or seed: 1. Sod: [ 1. Use 13 mm (0.5") thick (soil thickness) rolled sod from a reputable local grower. Species should be wear resistant, free from disease, and in excellent condition. Sod shall be grown in sand or sandy loam soils only. Sod grown in soils of clay, silt, or high organic materials such as peat, will not be accepted. 2. Seed: [ 1. Use seed materials, of the preferred species for local environmental and projected traffic conditions, from certified sources. Seed shall be provided in containers clearly labeled to show seed name, lot number, net weight, % weed seed content, and guaranteed % of purity and germination. Pure Live Seed types and amount shall be as shown on plans. a. Mulch — needed only for hydroseeding: Wood or paper cellulose commercial mulch materials compatible with hydroseeding operations. Mulch depth according to mulch GB/CSI-32 12 43 APRIL 2015 Pace 5 manufacturers' recommendation. DO NOT use mulch of straw, pine needles, etc., because of their low moisture holding capacity. b. Topsoil — needed only for seeding, recommended for hydroseeding: Obtain specified topsoil for a light "dusting" (no more than'/" or 13mm) above rings filled with sand for seeding germination. PART 3 EXECUTION 3.1 INSPECTION A. Examine subgrade and base course installed conditions. Do not start porous paving installation until unsatisfactory conditions are corrected. Check for improperly compacted trenches, debris, and improper gradients. B. For fire lane installations: prior to installing base course for tun` paving, obtain approval of local fire authorities of sub -base. C. Start of installation constitutes acceptance of existing conditions and responsibility for satisfactory performance. If existing conditions are found unsatisfactory, contact Architect for resolution. 3.2 PREPARATION Notes: Ensure that subbase materials are structurally adequate to receive designed base course, wearing course, and designed loads. Generally, excavation into undisturbed normal strength soils will require no additional modification. Fill soils and otherwise structurally weak soils may require modifications, such as geotextiles, geogrids, and/or compaction (not to exceed 90%). Ensure that grading and soil porosity of the subbase will provide adequate subsurface drainage A. Subgrade Preparation: 1. Prepare subgrade as specified in Section 32 10 00. Verify subgrade in accordance with porous paving system manufacturer's instructions. 2. Proper subgrade preparation will enable the Grasspave2 rolls/units to connect properly and remain Notes: For Fire lanes and emergency access, It is recommended that Fire Department inspectors be scheduled to inspect installation of Grasspave2 during preparation of the subbase, installation of the base course, and installation of Grasspave2 units. Most small projects can accommodate these inspections all on the same day. Verify with Fire Department if certificates of inspection are required. level and stationary after installation. 3. Excavate area allowing for unit thickness, the engineered base depth (where required), and 0.5 inch (1.25 cm) for depth of sod root zone or topsoil germination area (when applicable). 4. Provide adequate drainage from excavated area if area has potential to collect water, when working with in -place soils that have poor permeability. 5. Ensure in -place soil is relatively dry and free from standing water. 6. Uniformly grade base. 7. Level and clear base of large objects, such as rocks and pieces of wood. B. Base Preparation: 1. Install Base as specified in Section 32 10 00. Verify engineered base (if required) is installed in accordance with porous paving system manufacturer's instructions. 2. Coordinate base installation and preparation with subdrains specified in Section 33 46 00. 3. If required, place a geotextile separation layer between the natural ground and the 'engineered base'. 4. If required, install the specified sub -drain and outlet according to construction drawings. 5. Coordinate base installation and preparation with irrigation and drip irrigation lines specified in Section 32 80 00 and 32 84 13, respectively. 6. Place engineered base in lifts not to exceed 6 inches (150 mm), compacting each lift separately to GB/CSI-3212 43 APRIL 2015 PAGE 6 95 percent Modified Proctor. Leave 1 inch (2.5 cm) of depth below final grade for porous paver unit and sand fill and 0.5 inch (1.25 cm) for depth of sod root zone or topsoil germination area (when applicable). Notes: Delete requirement for on -site manufacturer's field representative if not required 3.3 ON -SITE MANUFACTURER'S FIELD REPRESENTATIVE A. A qualified Manufacturer's field representative shall be available for a pre -construction meeting via phone or in person and will provide installation videos, design details, installation instructions, and the technical specifications. B. The time for on -site observation shall be indicated in the Contract Documents and included in the base bid price. 3.4 HYDROGROW INSTALLATION A. Spread all Hydrogrow mix provided (spreader rate = 4.53 kg per 100 m2 (10 Ibs per 1076 ft2) evenly over the surface of the base course with a hand-held, or wheeled, rotary spreader. B. The Hydrogrow mix should be placed immediately before installing the Grasspave2. 3.5 GRASSPAVE2INSTALLATION A. Install the Grasspave2 units by placing units with rings facing up, and using snap -fit connectors, pegs and holes, provided to maintain proper spacing and interlock the units. Units can be easily shaped with pruning shears or knife. Units placed on curves, slopes, and high traffic areas shall be anchored to the base course, using 40d common nails with fender washer, as required to secure units in place. Tops of rings shall be between 6 mm to 13 mm (0.25" to 0.5") below the surface of adjacent hard -surface pavements. B. Install sand in rings as they are laid in sections by "back -dumping" directly from a dump truck, or from buckets mounted on tractors, which then exit the site by driving over rings already filled with sand. The sand is then spread laterally from the pile using flat bottomed shovels and/or wide "asphalt rakes" to fill the rings. A stiff bristled broom should be used for final "finishing" of the sand. The sand must be "compacted" by using water from hose, irrigation heads, or rainfall, with the finish grade no less than the top of rings and no more than 6 mm (0.25") above top of rings. 3.6 INSTALLATION OF GRASS A. Grass coverage on the sand -filled rings must be completed within one week. Sand must be re -installed and leveled and Grasspave2 checked for integrity if rings become exposed due to wind, rain, traffic, or other factors. (Choose one paragraph below to meet grass installation method desired.) Notes: Choose one paragraph below to match grass installation method 1. Preferred method: Hydroseeding/hydro-mulching - A combination of water, seed and fertilizer are homogeneously mixed in a purpose-built, truck -mounted tank. The seed mixture is sprayed onto the site at rates shown on plans and per hydroseeding manufacturer's recommendations. Coverage must be uniform and complete. Following germination of the seed, areas lacking germination larger than 20 cm x 20 cm (8" x 8") must be reseeded immediately. Seeded areas must be fertilized and kept moist during development of the turf plants. ). DO NOT DRIVE ON SYSTEM: Hydroseeded/hydro-mulch areas must be protected from any traffic, other than emergency vehicles, for a period of 6 to 8 weeks, or until the root system has penetrated and established well below the Grasspave2 units. 2. Install thin sod directly over sand filled rings, filled no higher than the top of the rings. Sod strips should be placed with very tight joints. Sodded areas must be fertilized and kept moist during root GB/CS I-32 12 43 APRIL 2015 PAGE 7 establishment (minimum of 3 weeks). DO NOT DRIVE ON SYSTEM: Sodded areas must be protected from any traffic, other than emergency vehicles, for a period of 3 to 4 weeks, or until the root system has penetrated and established well below the Grasspave2 units. Install grass seed at rates per grass type. A light "dusting" of commercial topsoil mix, not to exceed 1/2" (25 mm) will be placed above the rings and seed mix to aid germination rates. Seeded areas must be fertilized and kept moist during development of the turf plants. ). DO NOT DRIVE ON SYSTEM: Seeded areas must be protected from any traffic, other than emergency vehicles, for a period of 6 to 8 weeks, or until the root system has penetrated and established well below the Grasspave2 units. B. Adequately water sod or grass seed to assure germination of seed and growth of root system. 3.7 PROTECTION Notes: Choose one paragraph below to match grass installation method. A. Seeded areas must be protected from any traffic, other than emergency vehicles, for a period of 4 to 8 weeks, or until the grass is mature to handle traffic. B. Sodded areas must be protected from any traffic, other than emergency vehicles, for a period of 3 to 4 weeks, or until the root system has penetrated below the Grasspave2 units. 3.8 FIELD QUALITY CONTROL A. Remove and replace segments of Grasspave2 units where three or more adjacent rings are broken or damaged, reinstalling as specified, so no evidence of replacement is apparent. B. Perform cleaning during the installation of work and upon completion of the work. Remove all excess materials, debris, and equipment from site. Repair any damage to adjacent materials and surfaces resulting from installation of this work. 3.9 MAINTENANCE A. Maintain grass in accordance with manufacturer's instructions and as specified in Section 32 92 00 Manufacturers of Turfs and Grasses. B. Lawn Care: Normal turf care procedures should be followed, including de -thatching. C. DO NOT AERATE. Aerator will damage the Grasspave2 units. Aeration in not necessary in a sand root zone. D. When snow removal is required, keep a metal edged plow blade a minimum of % inch (17 mm) above the surface during plowing operations to avoid causing damage to the Grasspave2 units, or 1. Use a plow blade with a flexible rubber edge, or 2. Use a plow blade with skids on the lower outside corners set so the plow blade does not come in contact with the units. END OF SECTION GB/CSI-3212 43 APRIL 2015 PAGE 8 GRASSPAVE2 BY INVISIBLE STRUCTUREST" INSTALLATION GUIDE - Grasspave2 Porous Grass Pavement Introduction A. This document describes step-by-step information on how to properly install the Grasspave2 Porous Pavement System. Grasspave2 provides vehicular and pedestrian load support for grass areas, while protecting grass roots from harmful effects of traffic. The major components of the complete system are the Grasspave2 units, an engineered base course, Hydrogrow soil amendment/fertilizer, sand, and grass from seed, hydromulch, or sod. B. Contractors: Only licensed contractors should install the Grasspave2 system. The contractor should have a good performance record with similar construction projects. Homeowners should only attempt installation after they have read and understood fully this installation guide and/or our Technical Specifications. C. Landscaping: Plant a grass species in Grasspave2 that 1) is climate appropriate, 2) will receive the necessary maintenance for the species (irrigation and fertilizer support), 3) is wear resistant to hold up to vehicular traffic, 4) can be grown in a sand -based root zone, 5) is shade tolerant (if applicable). F. Warning: Unless there is an emergency, DO NOT DRIVE, PARK ON, or use Grasspave2 system for two or three mowing cycles until grass root system has matured (about 3 to 4 weeks for sod or 6 to 8 weeks for seeded areas). Any barricades constructed to prevent traffic flow must still be accessible by emergency and fire equipment during and after installation. G. Warranty: Invisible Structures, Inc. (ISI) warrants to its purchasers that all products furnished by ISI will be free from defects in material and/or workmanship. This warranty shall be extended for a period of five (5) years following the date of shipment by ISI. Providing a written claim is presented to ISI within the warranty period and after inspection by ISI showing the materials have failed under this warranty, all defective materials shall be refurnished under this warranty, at no charge, excluding re -installation costs. This in lieu of all other warranties expressed or implied and is the sole warranty extended by ISI. Our liability under this warranty is limited to the refurnishing of materials and does not include any responsibility for incidental, consequential, or other damages of any nature. Delivery, Storage, and Handling A. Store products in manufacturer's unopened packaging until ready for installation. B. Protect Grasspave2 units/rolls from damage during delivery and store rolls upright (like a soda can), and under a tarp to protect from sunlight when time for delivery to installation exceeds one week. Do not store rolls on their sides. C. Store Hydrogrow in a dark and dry location. D. Handling: Protect materials during handling and installation to prevent damage. Installation Considerations A. Review installation procedures and coordinate Grasspave2 work with other work affected. Generally, Grasspave2 is installed at the same time as project grass installation, nearly the last site construction activity. B. Do not begin installation of porous pavements until all hard surface paving adjacent to porous pavement areas, including concrete walks and asphalt paving, is completed. C. Install turf when ambient air temperatures is at least 55 degrees F (13 degrees Q. D. In cold weather, do not use frozen materials or materials mixed or coated with ice or frost, and do not build on frozen base or wet, saturated or muddy subgrade. E. Protect partially completed paving against damage from other construction traffic when work is in progress. F. Adequately water sod or grass seed to assure germination of seed and growth of root system. G. Grass coverage on the sand -filled Grasspave2 rings must be completed within one week. H. DO NOT DRIVE, PARK ON, or use Grasspave2 system for two or three mowing cycles until grass root system has matured (about 3 to 4 weeks for sod or 6 to 8 weeks for seeded areas). Any barricades constructed must still be accessible by emergency and fire equipment during and after installation. Materials A. Grasspave2 Porous Paving Rolls B. Base Course: Sandy gravel material from local sources commonly used for road base construction (recycled' -O materials such as crushed concrete or crushed aggregate are NOT acceptable). 1. Conforming to the following sieve analysis and - requirements: '- 100 percent passing sieve size 1 inch (25 mm). 90-100 percent passing sieve size 3/4 inch (19 mm). 70-80 percent passing sieve size 3/8 inch (9 mm). 55-70 percent passing sieve size #4. 45-55 percent passing sieve size #10. 25-35 percent passing sieve size #40. 3-8 percent passing sieve size #200. 2. Provide a base course material nearly neutral in pH (range from 6.5 to 7.2) to provide adequate root zone development for turf. 3. Material may be either "pit run" or "crusher run." Avoid using clay based crusher run/pit run. Crusher run material will generally require coarse, well -draining sand conforming to AASHTO M6 or ASTM C 33 to be added to mixture (20 to 30 percent by volume) to ensure long-term porosity. 4. Alternative materials such as crushed shell, limerock, or crushed lava may be used for base course use, provided they are mixed with sharp sand (20 to 30 percent by volume) to ensure long-term porosity, and are brought to proper compaction. Without added sand, crushed shell and limerock set up like concrete and become impervious. 5. Alternative size and/or composition of base course materials should be submitted to Invisible Structures, Inc. (Manufacturer) for approval. C. Sand Fill for Rings and Spaces Between Rings: Clean sharp sand (washed concrete sand). Choose one of the following: 1. Coarse, well -draining sand, such as washed concrete sand conforming to AASHTO M6 or ASTM C-33. 2. United States Golf Association (USGA) greens, section - sand mix "The Root Zone Mixture." D. Turf Conditioner: 1. Hydrogrow a proprietary soil amendment manufactured by Invisible Structures, Inc. and provided with Grasspave2. 2. NO SUBSTITUTIONS. E. Grass — Choose either sod or seed. Use grass species resistant to wear by traffic generally a Blue/Rye/Fescue mix used for athletic fields in northern climates, and Zoysia, Fescue, or Bermuda types in southern climates. Check with local sod and seed suppliers for preferred mixtures. Dedicated fire lanes can use same grass species used on surrounding turf. Parking applications require greatest wear -resistant species possible, generally available only by seed or hydroseeding/hydro-mulching. 1. Sod: Use 13 mm (0.5") thick (soil thickness) rolled sod from a reputable local grower. Species should be wear resistant, free from disease, and in excellent condition. Sod shall be grown in sand or sandy loam soils only. Sod grown in soils of clay, silt, or high organic materials such as peat, will not be accepted. 2. Seed: Use seed materials, of the preferred species for local environmental and projected traffic conditions, from certified sources. Seed shall be provided in containers clearly labeled to show seed name, lot number, net weight, % weed seed content, and guaranteed % of purity and germination. Pure Live Seed types and amount shall be as shown on plans. a. Mulch — needed only for hydroseeding: Wood or paper cellulose commercial mulch materials compatible with hydroseeding operations. Mulch depth according to mulch manufacturers' recommendation. DO NOT use mulch of straw, pine needles, etc., because of their low moisture holding capacity. b. Topsoil — needed only for seeding, recommended for hydroseeding: Obtain specified topsoil for a light "dusting" (NO MORE than V2" or 13mm) above rings filled with sand for seeding germination. F. Fertilizer: A commercial "starter" fertilizer, with Guaranteed Analysis of 17-23-6, or as recommended by local grass supplier, for rapid germination and root development. G. Grasspave2 Sign: A sign to identify the presence of Grasspave2 paving, stating that special maintenance is required, with the Manufacturer's phone number, and made of durable materials for outdoor exposure shall be provided and installed. H. Fire lane Signage & Delineation: Fire lanes must be identified regarding their entrance and physical location with the placement of signs, gates, curbs, bollards, etc. Specific signage wording and other details must be coordinated with and approved by local fire authorities. INSTALLATION Inspection (For Fire lanes and emergency access, It is recommended that Fire Department inspectors be scheduled to inspect installation of Grasspave2 during preparation of the subbase, installation of the base course, and installation of Grasspave2 units. Most small projects can accommodate these inspections all on the same day. Verify with Fire Department if certificates of inspection are required.) A. Examine subgrade and base course installed conditions. Do not start porous paving installation until unsatisfactory conditions are corrected. Check for improperly compacted trenches, debris, and improper gradients. B. For fire lane installations: prior to installing base course for turf paving, obtain approval of local fire authorities of sub -base. C. Start of installation constitutes acceptance of existing conditions and responsibility for satisfactory performance. If existing conditions are found unsatisfactory, contact Architect for resolution. Preparation (Ensure that subbase materials are structurally adequate to receive designed base course, wearing course, and designed loads. Generally, excavation into undisturbed normal strength soils will require no additional modification. Fill soils and otherwise structurally weak soils may require modifications, such as geotextiles, geogrids, and/or compaction (not to exceed 90%). Ensure that grading and soil porosity of the subbase will provide adequate subsurface drainage) A. Subgrade Preparation: 1. Prepare subgrade as specified for project. 2. Proper subgrade preparation will enable the Grasspave2 rolls/units to connect properly and remain level and stationary after installation. 3. Excavate area allowing for unit thickness (1 in), the engineered base depth (where required), and 0.5 inch (1.25 cm) for depth of sod root zone or topsoil germination area (when applicable). 4. Provide adequate drainage from excavated area if area has potential to collect water, when working with in -place soils that have poor permeability. 5. Ensure in -place soil is relatively dry and free from standing water. 6. Uniformly grade base. 7. Level and clear base of large objects, such as rocks and pieces of wood. 12 Base Preparation:rr 1. Install Base as specified. 2. Coordinate base installation and preparation with subdrains (if necessary). 3. If required, place a geotextile separation layer between the natural ground and the `engineered base'. 4. If required, install the specified sub -drain and outlet according to construction drawings. 5. Coordinate base installation and preparation with irrigation and drip irrigation lines. 6. Place engineered base in lifts not to exceed 6 inches (150 mm), compacting each lift separately to 95 percent Modified Proctor. 7. Leave 1 inch (2.5 cm) of depth below final grade for porous paver unit and sand fill and 0.5 inch (1.25 cm) for depth of sod root zone or topsoil germination area (when applicable). _H_ydrogrow Installation A. Spread all Hydrogrow mix provided (spreader rate = 4.53 kg per 100 m2 (10 lbs per 1076 ft2) evenly over the surface of the base course with a hand-held, or wheeled, rotary spreader. B. The Hydrogrow mix should be placed immediately before installing the Grasspave2. Grasspave2 Unit Installation A. Install the Grasspave2 units by placing units with rings facing up, and using snap -fit connectors, pegs and holes, provided to maintain proper spacing and interlock the units. Units can be easily shaped with pruning shears or knife. Units placed on curves, slopes, and high traffic areas shall be anchored to the base course, using 40d common nails with fender washer, as required to secure units in place. Tops of rings shall be between 6 mm to 13 mm (0.25" to 0.5") below the surface of adjacent hard -surface pavements. B. Install sand in rings as they are laid in sections by "back - dumping" directly from a dump truck, or from buckets mounted on tractors, which then exit the site by driving over rings already filled with sand. The sand is then spread laterally from the pile using flat bottomed shovels and/or wide "asphalt rakes" to fill the rings. A stiff bristled broom should be used for final "finishing" of the sand. The sand must be "compacted" by using water from hose, irrigation heads, or rainfall, with the finish grade no less than the top of rings and no more than 6 mm (0.25") above top of rings. Installation of Grass A. Grass coverage on the sand -filled rings must be completed within one week. Sand must be re -installed and leveled and Grasspave2 checked for integrity if rings become exposed due to wind, rain, traffic, or other factors. Notes: Choose one paragraph below to match grass installation method 1. Preferred method: Hydroseeding/hydro-mulching - A combination of water, seed and fertilizer are homogeneously mixed in a purpose-built, truck -mounted tank. The seed mixture is sprayed onto the site at rates shown on plans and per hydroseeding manufacturer's recommendations. Coverage must be uniform and complete. Following germination of the seed, areas lacking germination larger than 20 cm x 20 cm (8" x 8") must be reseeded immediately. Seeded areas must be fertilized and kept moist during development of the turf plants. ). DO NOT DRIVE ON SYSTEM: Hydroseeded/hydro- mulch areas must be protected from any traffic, other than emergency vehicles, for a period of 6 to 8 weeks, or until the root system has penetrated and established well below the Grasspave2 units. OR 2. Install thin sod directly over sand filled rings, filled no higher than the top of the rings. Sod strips should be placed with very tight joints. Sodded areas must be fertilized and kept moist during root establishment (minimum of 3 weeks). DO NOT DRIVE ON SYSTEM: Sodded areas must be protected from any traffic, other than emergency vehicles, for a period of 3 to 4 weeks, or until the root system has penetrated and established well below the Grasspave2 units. OR 3. Install grass seed at rates per grass type. A light "dusting" of commercial topsoil mix, not to exceed 1/2" (25 mm) will be placed above the rings and seed mix to aid germination rates. Seeded areas must be fertilized and kept moist during development of the turf plants). DO NOT DRIVE ON SYSTEM: Seeded areas must be protected from any traffic, other than emergency vehicles, for a period of 6 to 8 weeks, or until the root system has penetrated and established well below the Grasspave2 units. B. Adequately water sod or grass seed to assure germination of seed and growth of root system. Protection Choose one paragraph below to match grass installation method. A. Seeded areas must be protected from any traffic, other than emergency vehicles, for a period of 4 to 8 weeks, or until the grass is mature to handle traffic. B. Sodded areas must be protected from any traffic, other than emergency vehicles, for a period of 3 to 4 weeks, or until the root system has penetrated below the Grasspave2 units. Field Qualms Control A. Remove and replace segments of Grasspave2 units where three or more adjacent rings are broken or damaged, reinstalling as specified, so no evidence of replacement is apparent. B. Perform cleaning during the installation of work and upon completion of the work. Remove all excess materials, debris, and equipment from site. Repair any damage to adjacent materials and surfaces resulting from installation of this work. INVISIBLE STRUCTURES" Invisible Structures, Inc. 303.233.8383 www.invisibelstructures.com INVISIBLE Base Course Depth Recommendations S T R U C T U R E ST" GRASSPAVE2 and GRAVELPAVE2 Invisible Structures, Inc. MSA Consulting, Inc. 303-233-8383 www.invisiblestructures.com Base Course Recommendation is no less than 12-inches of Class III Soil or better, at 95% compaction for the occasional passes of a Heavy Fire Truck & H-20 Loading (Max 110 psi, 80,000 LB) Normal Traffic Occassional Passes Infrequent Passes CBR 2-4 1 CBR >4 CBR 2-4 1 CBR >4 CBR 2-4 1 CBR >4 Heavy Fire Truck & H-20 Loading Max 110 psi 14 in 12-14 in 12-14 in 12 in 12 in 2 in F 80000 lb V J Light Fire Truck & H-15 Loading Typical 85 psi 12 in 10-12 in 10 in 8-10 in 8-10 in 8 in 60,000 lb Utility & Delivery Truck & H-10 Loading Typical 60 psi 8-10 in 8 in 8-10 in 6-8 in 6-8 in 6 in 40,000 lb Cars & Pick -Up Truck Access Typical 45 psi 6-8 in 6 in 6 in 4-6 in 4-6 in 2-4 in 8,000 lb Trail Use and Cart Paths <1,000 lb 6 in 4-6 in 2-4 in 0-2 in None None * THESE DEPTH RECOMMENDATIONS SHOULD BE VERIFIED BY THE PROJECT ENGINEER AND LOCAL AUTHORITIES GRASSPAVE2 BY INVISIBLE STRUCTURES'° GRAVELPAVE2 BY INVISIBLE STRUCTURES" V4.1