BSOL2017-0010E
78-495 CALLE TAMPICO .
LA QUINTA, CALIFORNIA 92253
Permit Type/Subtype:
Application Number:
Property Address:
APN:
Application Description:
Property Zoning:
Application Valuation:
Applicant:
1ST LIGHT ENERGY INC
1869 MOFFAT BLVD
MANTECA, CA 95336
c&t�p 4 449mrA
DESIGN & DEVELOPMENT DEPARTMENT
BUILDING PERMIT
VOICE (760) 777-7125
FAX (760) 777-7011
INSPECTIONS (760) 777-7153
Date: 12/27/2017
SOLAR/COMMERCIAL Owner:
6SOL2017-0010 EXTRA SPACE MANAGEMENT INC.
46600 ADAMS ST 2795 E COTTONWOOD PKWY STE 400
600390008 SALT LAKE CITY, UT 84121
EXTRA SPACE / 120.1kW PV SYSTEM - (414) PANELS/(3) INVERTERS
$165,600.00
n
Contractor:
1ST LIGHT ENERGY INC
51�1869
MOFFAT BLVD
c�
DEC 2 % 2017
MANTECA, CA 95336
CITY OF LA QUINTA (209)824-5500
COMMUNITY DEVELOPMENT DEPARTMENT Llc. No.: 921371*
LICENSED CONTRACTOR'S DECLARATION
I hereby affirm under penalty of perjury that I am licensed under provisions of Chapter 9
(commencing with Section 7000) of Division 3 of the Business and Professions Code, and
my License is in full force and effect.
License Class: B. C10, C46 License No.: 921371
Date: 1Z 2% Contractor:
OWNER -BUILDER RATION
I hereby affirm under penalty of perjury that I am exempt from the Contractor's State
License Law for the following reason (Sec. 7031.5, Business and Professions Code: Any
city or county that requires a permit'to construct, alter, improve, demolish, or repair any
structure, prior to its issuance, also requires the applicant for the permit to file a signed
statement that he or she is licensed pursuant to the provisions of the Contractor's State
License Law (Chapter 9 (commencing with Section 7000) of Division 3 of the Business
and Professions Code) or that he or she is exempt therefrom and the basis for the
alleged exemption. Any violation of Section 7031.5 by any applicant for a permit
subjects the applicant to a civil penalty of not more than five hundred dollars ($500).:
(1 I, as owner of the property, or my employees with wages as their sole
compensation, will do the work, and the structure is not intended or offered for sale.
(Sec. 7044, Business and Professions Code: The Contractors' State License Law does not
apply to an owner of property who builds or improves thereon, and who does the work
himself or herself through his or -her own employees, provided that the improvements
are not intended or offered for sale. If, however, the building or improvement is sold
within one year of completion, the owner -builder will have the burden of proving that he
or she did not build or improve for the purpose of sale.).
( ) I, as owner of the property, am exclusively contracting with licensed contractors to
construct the project. (Sec. 7044, Business and Professions Code: The Contractors' State
License Law does not apply to an owner of property who builds or improves thereon,
and who contracts for the projects with a contractor(s) licensed pursuant to the
Contractors' State License Law.).
(� I am exempt under Sec. B.&P.C. for this reason
Date:
Owner:
CONSTRUCTION LENDING AGENCY
I hereby affirm under penalty of perjury that there is a construction lending agency for
the performance of the work for which this permit is issued (Sec. 3097, Civ..C.).
Lender's Name:
Lender's Address:
WORKER'S COMPENSATION DECLARATION
I hereby affirm under penalty of perjury one of the following declarations:
1 have and will maintain a certificate of consent to self -insure for workers'
compensation, as provided for by Section 3700 of the Labor Code, for the performance
of the work for which this permit is issued.
I have and will maintain workers' compensation insurance, as required by
Sectic1d3700 of the Labor Code, for the performance of the work for which this permit is
issued. My workers' compensation insurance carrier and policy number are:
Carrier: NATIONAL UNION FIRE INSURANCE COMPANY OF PITTSBURG Policy
Number: 022298272
_ I certify that in the performance ofthe work for which this permit is issued, I
shall not employ any person in any manner so as to become subject to the workers'
compensation laws of California, and agree that, if I should become subject to the
workers' compensation provisions of Section 3700 of the Labor Code, I shall forthwith
comply with those provisions:
Date:. Applicant:
WARNING: FAILURE TO SECURE WORKERS' C PENSATION COVERAGE IS UNLAWFUL,
AND SHALL SUBJECT AN EMPLOYER TO CRIMINAL PENALTIES AND CIVIL FINES UP TO
ONE HUNDRED THOUSAND DOLLARS ($100,000). IN ADDITION TO THE COST OF .
COMPENSATION, DAMAGES AS PROVIDED FOR IN SECTION 3706 OF THE LABOR CODE,
INTEREST, AND ATTORNEY'S FEES.
APPLICANT ACKNOWLEDGEMENT
IMPORTANT: Application is hereby made to the Building Official for, a permit subject to
the conditions and restrictions set forth on this application.
1. Each person upon whose behalf this application is made, each person at whose
request and for whose benefit work is performed under or pursuant to any permit issued
as a result of this application, the owner, and the applicant, each agrees to, and shall
defend, indemnify and hold harmless the City of La Quinta, its officers,agents, and
employees for any act or omission related to the work being performed under or
following issuance of this permit.
2. Any permit issued as a result of this application becomes null and void if work is not
commenced within 280 days from date of issuance of such permit, or cessation of work
for 180 days will subject permit to cancellation.
I certify that I have read this application and state that the above information is correct.
I agree to comply with all city and county ordinances and state laws relating to building
construction, and hereby authorize representatives of this city to enter upon the above -
mentioned property for inspection purposes.
Date: Signature (Applicant or Agent): '
Date: 12/27/2017
Application Number:
BSOL2017-0010 .
Owner:
Property Address:
46600 ADAMS ST
EXTRA SPACE MANAGEMENT INC.
APN:
600390008
2795 E COTTONWOOD PKWY STE 400
Application Description:
EXTRA SPACE / 120.1kW PV SYSTEM - (414) PANELS/(3) INVERTERS
SALT LAKE CITY, UT 84121
Property Zoning:
Application Valuation:
$165,600.00
Applicant:
Contractor:
1ST LIGHT ENERGY INC
1ST LIGHT ENERGY INC
" 1869 MOFFAT BLVD
1869 MOFFAT BLVD
MANTECA, CA 95336
MANTECA, CA 95336
(209)824-5500
Llc. No.: 92137-1
Detail: 120.1kW SOLAR ARRAY
- (414) 290W TWINPEAK PANELS+P600 SOLAREDGE OPTIMIZERS W/(3) SE33.3K-US SOLAREDGE INVERTERS, (1)
150A/480V SUBP.ANEL AND (1) 112.5kVA 480/208V TRANSFORMER [7,452SF] 2016 CALIFORNIA ELECTRICAL
CODE.
FINANCIAL • •
DESCRIPTION -ACCOUNT
QTY
AMOUNT
HOURLY CHARGE - CITY BUILDING STAFF
101-0000-42600
4
$624.00
DESCRIPTION
ACCOUNT
QTY
AMOUNT
HOURLY CHARGE - ESGIL STRUCTURAL ENGINEER
101-0000-42600
1
$120.00
Total Paid for BLDG CITY STAFF - PER HOUR: $744.00
DESCRIPTION
ACCOUNT
QTY
AMOUNT
BSAS SB1473 FEE
101-0000-20306
0
$7.00
Total Paid for BUILDING STANDARDS ADMINISTRATION BSA: $7.00
DESCRIPTION
ACCOUNT
QTY
AMOUNT
PV SYSTEM GREATER THAN 10KW
101-0000-42403.
0
$38.00
DESCRIPTION
ACCOUNT
QTY
AMOUNT
PV SYSTEM GREATER THAN 10KW PC
101-0000-42600
0
$38.00
DESCRIPTION
ACCOUNT
QTY
AMOUNT
PV SYSTEM MISC EQUIPMENT
101-0000-42403
0
$50.66
DESCRIPTION
ACCOUNT
QTY
AMOUNT
'PV SYSTEM MISC EQUIPMENT PC
101-0000-42600
0
$50.66
Total Paid for ELECTRICAL: $177.32
DESCRIPTION
ACCOUNT
QTY
AMOUNT
PERMIT ISSUANCE
.101-0000-42404
.0
$96.27
Total Paid for PERMIT ISSUANCE: $96.27
DESCRIPTION
ACCOUNT
QTY
AMOUNT
TECHNOLOGY ENHANCEMENT FEE
502-0000-43611
0
$5.00
Total Paid for TECHNOLOGY ENHANCEMENT FEE: $5.00
TOTALS:
PERMIT # �p (� ( -7 "-.00 '
PLAN LOCATION '
I 1
Project Address: �O D �� Project Description: Pool, Remodel, _�dd't, Elect, Plumb, Mech
APN #:�
Applicant Name:
Address:
City, ST, Zip:
Telephone:
D
Email: G" N
�C��{,.� C �(�l/`
Valuation of Project S
Contractor Name: rr''
New SFD Construction:
Address: O ��'
Conditioned Space SF
City, St, Zip
(qij3
Garage _ SF
Telephone:. , '�J� (��
Patio/Porch SF
Email:
Fire Sprinklers SF
State Lic: I L� 3 [
I City Bus Lic:
Arch/Eng Name:
Construction Type: Occupancy:
Address:
Grading:
City, St, Zip
Telephone:
Bedrooms:
Stories:
# Units:
Email:
-
State Lic: City Bus Lic.-
Property Owner's Name: eU7ZA
New Commercial / Tenant Improvements:
Address: q '�"��
Total Building SF
City, ST, Zip -�_ �-��, �'T'"
Construction Type: Occupancy:
Telephone:
Email:
7M5 CALLE TAMPICO
LA QUINTA, CA 92253
760-777-7000
RECEI® E ESIGN & DEVELOPMENT DEPARTMENT
78-495 CALLE TAMPICO
Nov 2 8 2w LA QUINTA, CALIFORNIA 92253
(760) 777-7125 FAX (760) 777-7011
CITY OF LA QUINTA
BIIIM&NEWNFOWILAN CHECK CORRECTION LIST (sowt)
DATE: SEPTEMBER 7, 201 ADDRESS: 46-600 ADAMS ST
S ATT US: SECOND REVIEW DESCRIPTION: PV SOLAR SYSTEM
(PL'AN`CHfCKED'BY: AJ ORTEGA APPLICANT: IST LIGHT ENERGY
�TELEPHCiNE`NUMBER: (760) 777-7018�'' PLAN CHECK #: BSOL2017-0010
This submittal has been checked for compliance with the 2016 California Building Codes
and the City of La Quinta Municipal Code.
APPLICANT:
The following items are being returned to you
for correction:
1_ 1ST REVIEW SOLAR (REDLINED) PLAN
2- UNMARKED PLAN SET
2- STRUCTURAL CALCULATIONS
1- CORRECTION LIST
BUILDING DEPARTMENT STAFF:
DO NOT accept any resubmittal unless ALL of
the following items are included:
1-1ST REVIEW SOLAR (REDLINED) PLAN.,..,/
1- CORRECTION LIST w/res onses
2- REVISED PLAN SETS
2- STRUCTURAL CALCULATIONS
1- ASSESSORS SITE/FLOOR 'PLAN
INSTRUCTIONS TO APPLICANT:
1) Provide a written response to each comment on the following pages, noting specifically where the
correction can be found. Responses such as, "Sheet A-3," or, "Handrails shall be per CBC Section 1003," are
not acceptable. Show or note specifically how compliance with a code requirement is achieved.
Responses such as, "Added note 16 on sheet A-3" are appropriate and will help expedite your back check.
2) Corrections may not be made by handwriting on existing drawings. Revise originals and reprint Plans and/or
Calculations as necessary.
3) Return all red -marked Plans and/or Calculations with your resubmittal.
4) Each sheet of resubmitted Plans and/or Calculations shall include the preparer's name and telephone
number and shall be wet -signed by the preparer. If the preparer is a licensed architect or engineer, all
documents prepared by that licensed individual shall also bear his/her stamp as prescribed by California
Business and Professions Code Section 5536. Resubmittals will not be accepted with signatures missing.
5) Return this list, your written responses, and all documents listed above with your resubmittal.
Non -Residential Plan Check Correction List (SOLAR) Pagel of 3
SECTION A - GENERAL
1) Provide on each sheet of resubmitted Plans and cover sheet of bound Calculations the preparer's name and
telephone number and wet -signature. If the preporer is a licensed architect or engineer, all documents
prepared by that licensed individual shall also bear his/her stamp as prescribed by California Business and
Professions Code'5536. Resubmittals will not be accepted with signatures missing.
SECTION B - SOLAR
1. General
1) Reconcile noted information shown throughout plan set. See isr review redlined plan. Please provide a
response for each item, either on returned redlined plan or in letter. -No responses provided to redtined
comments, provide responses to remaining items on sheet E-200 (5 of 13).
II. Circuit Requirements
Photovoltaic system circuits installed on or in buildings shall include a rapid shutdown function that
controls specific conductors in accordance with 690.12 (1) through (5). Specify requirement and compliant
equipment on plan, and update signage sheet in accordance with Section 690.56(C).Per the equipment
specification sheet, the proposed inverter requires a separate installation kit, note this installation
throughout plans at each inverter type location. (i.e. On sheet T-100 under `Inverter Type and Rating')
III. Disconnecting Means
1) No Corrections Apply.
IV. Wiring Methods
4Where the number of current -carrying conductors in a raceway exceed three (3) the allowable ampacity of
cch conductor shall be reduced as shown in Table 310.15(13)(3)(a). (CEC §310.15(B)(3)) See 15i review
redlined comments - Prior to inverter input, will installation use a pull box and change to single conduit?
Additionally reconcile calculations and notes regarding maximum number on conductors per conduit. Note
not removed and conductor sizing schedule not adjusted for 6-current carrying conductors as specified
on sheet E-200 (5 of 13) note number 2.
V. Grounding
Photovoltaic systems having do circuits and ac circuits with no direct connection between the do grounded
conductor and ac grounded conductor shall have a do grounding system per 690.47(B). The do grounding
system shall be bonded to the ac grounding system by one of the following methods: Grounding sheet E
500 does not appear to fully demonstrate compliance with any (a) through (c) option, see underlined
requirements below for clarification. The installation method specified (Type A) has not been
demonstrated on sheet E-500, per the requirement "The do grounding electrode system conductor(s) or
the bonding jumpers to the ac aroundina electrode system shalt not be used as a substitute for any
required ac equipment grounding conductors.", which a separate conductor has not been shown, the AC
EGC only.
��:E
eparate Direct -Current Grounding Electrode System Bonded to the Alternating -Current Grounding
lectrode System: A separate do grounding electrode or system shall be installed, and it shall be
bonded directly to the ac grounding electrode system The size of any bonding jumper(s) between the
ac and do systems shall be based on the larger size of the existing ac grounding electrode conductor or
the size of the do grounding electrode conductor specified by 250.166. The do grounding electrode
system conductor(s) or the bonding iumoers to the oc grounding electrode system shall not be used as
a substitute for any required ac equipment grounding conductors
Non -Residential Plan Check Correction List (SOLAR) Page 2 of 3
4
ot 4a"
VI. Marking, Connection to Other Sources, Storage Batteries and Systems Over 600 Volts
1) No Corrections Remain.
SECTION C - FIRE
1) With the existing structure, smoke ventilation options shall be either a pathway 8 feet or greater in width,
or a 4-foot or greater in, width pathway and bordering 4-foot by 8-foot "venting cutouts" every 20 feet on
alternating sides of the pathway. (CFC §605.11.1.3.3(2)2.1 or 2.4) A 4 x 8 foot cutout has not been
provided, see diagram below:
SECTION D- STRUCTURAL
1) No Corrections Remain.
SECTION E - MISCELLANEOUS COMMENTS
1) Red marks on Plans, even if not specifically mentioned in this list, indicate items needing correction. Revise
Plans as necessary and provide written response, noting where correction can be found.
2) Provide one copy each of the Site Plan and Floor Plan for the County Assessor's office. While not required for
resubmittal, this administrative item must be addressed prior to issuance of building permit.
END CORRECTION LIST
As further information is provided and reviewed, additional corrections may be required.
Non -Residential Plan Check Correction List
Page 3 of 3 .
1ST Light EnerciwT
tstlightenergy.com 1.866.83.SOLAR
HQ. 1869 Moffat Blvd., Manteca, CA 95336 I F. 209.824.5575
Date:11/03/2017
To: City of La Quinta, CA
For: Extra Space Storage #1561
46600 Adams Street
La Quinta, CA-92253
Plan Check #: BSOL2017-0010
To whom it may concern:
The following comments are. in response to Plan Check Corrections dated 9/07/2017. review Revision 4
Plan Set for reference to these comments below:
.SECTION A -GENERAL
1. Provide on each sheet of resubmitted plans and cover sheet of bound calculations the preparer's
name and telephone number and wet -signature. If the preparer is a licensed architect or
engineer, all documents prepared by that licensed individual shall also bear his/her stamp as
prescribed by California Business and Professions Code '5536. - Resubmittals will not be accepted
with signatures missing.
Baljit Chopra is our Electrical P.E. and has provided his contact information with professional
seal and wet signature on all Electrical sheets. Refer to title block.
(continue to page 2)
r
03NP
1ST Light (-=nprgLj M
tst(ightenergy.com 11.866.83.SOLAR
HQ.1869 Moffat Blvd., Manteca, CA 95336 1 F. 209.824.5575
SECTION B - SOLAR
General
1. Reconcile noted information shown throughout plan set. See 15L review redlined plan. Please
provide a response for each item, either on retuned redlined plan or in letter. — No responses
provided to redlined comments, provide responses to remaining items on sheet E-200 (5 of 13).
Received redlines and acknowledge the comments regarding the conductor count and inputs.
The SE33.3K-US Inverters are Three-phase and allow up to 3 inputs (with fuses on plus &
minus) as shown in the datasheet snippet below -
� SElOKUS S: 20KUS � SE33.3Ktit
�—
AC output conduit size / AWG ran#,e .................................................................................................._.............
3/4" minimum J 12-6 AWG
DC input conduit size J AWG range .....................................................
3/4" minimum J 12-b AWG
........................
Number of DC inputs
2 pairs
3 pairs (with fuses on
........ ......... I .........
!us & minus)!;,
Dimensions kHl W p)
21 x 12: 5 x 10.5 J 540 x 315 x 260
...........................................................
in/mm
. .
Dimensions with Safety Switch (HxWxD)
...........................................................................................................................................................................
30.5 x.1 2.5 x 10.5 / 775 x 315 x 260
in/mm
Weight............ ................ ............. .................... ...........
.............7.: '3 .............
...�:' 45............Pft..
Weight with Safety Switch........
.......................74.7 J 36:?.................... .....
.......... .....10??
/48.......................
........
.ib�k&...
...
Coolin.............. .................I......I.........................................
...... .....Fans (user replaceablel
Noise
.............................................................................................................................................................................
< 50
< 55
d8A
Operating temperature Range .........................................
-40 to +140 / -40 to +60
.................................
..I—,.....
F%C
.........
Protection Rating._ ........
............. ............... NEMA3R
Redlines from sheet E-300.00 —
'-�
ci
rn
.. • r SHEET NOTES:_
? Pe5R ir+.m,�J Pi wars ssvmarx rnassAA"
era m a ua er s b-;w:
0 ..X b ANZ 9 k � BtlXF6 NF Q60 ..
eAWG l L..(,_ ra�+ernaw,�aRm.'«w*aa xEa�nuesy�.e roeuc.,.-,� vs es..esc, r�r
9�UWMENi TAGS
,,, i =_an FW—ilR�
a pv €s
R
Please review sheet E-300.00 for updated line -diagram. c
SECTION B — SOLAR (continued)
Circuit Requirements
(continue to page 3)
2
1ST l_igh EnengLi M
tstlightenergy.com 1.866.83.SOLAR
HQ.1869 Moffat Blvd., Manteca, CA 95336 1 F.209.1824.5575,
2. Photovoltaic system circuits installed on or in buildings shall include a rapid shutdown function
that controls specific conductors in accordance with 690.12 (1) through (5). Specify -requirement
and compliant equipment on plan, and update signoge sheet in accordance with Section
690.56(C). — Per the equipment specification sheet, the proposed inverter requires a separate
installation kit, note this installation throughout plans at each inverter type location. (i.e. On
sheet T-100 under 'Inverter Type and Rating')
The most updated datasheet for Solaredge three-phase inverters is on sheet E-610.00. Shown
in cloud are the updated details on rapid shutdown — "Automatic Rapid Shutdown upon AC.
Grid Disconnect, NEC 2014 and 2017 690.12." Therefore, an Installations Kit is no longer
required with this new, update. Review the following sheets for Rapid Shutdown details —
T-100.00) See Inverter Type & Rating description, and on the Bill of Material description at
Tags C1 to C3.
E-200.00) See label descriptions for Inverters at Tags C1 to C3.
E-610.00) See Solaredge three-phase inverter details — Rapid Shutdown details states, `
"Automatic Rapid, Shutdown Upon AC Grid Disconnect."
E-700.00) See Rapid Shutdown labels to be installed at each Inverter, at the AC Grid
Disconnect, and at the Main Service Panel. See clouded labels 07-317.
Disconnecting Means
3. No Corrections apply.
Wiring Methods
4. Where the number of current -carrying conductors in a raceway exceed three (3) the allowable
ampacity of each conductor shall be reduced as shown in Table 310.15(B)(3)). See review
redlined comments, - Prior to inverter input, will installation use a pull box and change to single
conduit? Additionally, reconcile calculations and notes regarding maximum number on
conductors per conduit. — Note not removed and conductor sizing schedule not adjusted for 6-
current carrying conductors as specified on sheet E-200 (5 of 13) note number 2.
Acknowledged. The DC inputs for the inverters has been corrected and only requires 3 inputs
with fuses on plus and minus. Please refer to number 1 for details, and review sheet.E-200.00
for updated line -diagram.
(continue to page 4).
3
�I
1ST Ught energw-
lstlightenergyprn 11.866.83.SOLAR
HQ.1869 Moffat Blvd., Manteca, CA 95336 I F. 209.824.5575
5. Photovoltaic systems having DC circuits and AC circuits with no direct connection between the DC
grounding conductor and AC grounded conductor shall have a DC grounding system per
690.47(8). The DC grounding system shall be bonded to the AC grounding system by one of the
following methods: Grounding sheet E-500.00 does not appear to fully demonstrate compliance
with any (a) through (c) option, see underlined requirements below for clarification. — The
installation method specified (Type A) has not been demonstrated on sheet E-500, per
requirement "The do grounding electrode system conductor(s) or the bonding jumpers to the oc
grounding electrode system shall not be used as a substitute for any required ac equipment
grounding conductors. ", which a separate conductor has not been shown, the AC EGC only.
Please review sheet E-500.00 updated Grounding Schematic with new details of AC grounding
installed with irreversi I�6 g imding splices throughout. Grounding sizes are adjusted .
accordingly and are updated on E-200.00 three -line diagram as well.
Marking, Connection to Other Sources, orS age Tatteries and Systems Over 600 Volts
6. No Corrections Remain.
SECTION C - FIRE
1: With the existing structure, smoke ventilation options shall be either a pathway 8-feet or greater
in width, or a 4-foot or greater in width pathway and bordering 4-foot by 8-foot "venting
cutouts" every 20 feet on alternating sides of the pathway. (cfc 605.11.1.3.3(2)2.1 or 2.4)
Please review sheets E-100.00 and S-100.00 for 8-foot spacings as required. There are no
smoke vents on this building.
SECTION D - STRUCTURAL
1. No Corrections Remain.
SECTION E —MISCELLANEOUS COMMENTS
1. Red marks on Plans, even if not specifically mentioned in this list indicate items needing
correction. Revise Plans as necessary and provide written -response, noting where correction can
be found.
Acknowledged. Redlines were received/reviewed and are incorporated in the Rev4 plan set.
2. Provide one copy each of the Site Plan and Floor Plan for the County Assessor's office. While not
required for resubmittal, this administrative item must be addressed prior to issuance of building
permit.
Acknowledged. Please see PDF attachments for'ESS 1561 Site Plan' and 'ESS 1561 Floor Plan.'
If there are any questions or concerns regarding these responses, please feel free to contact us through
e-mail or phone. Thank you.
Sincerely,
1" Light Energy
Commercial Design
4
c�
ECTOR
E n G I n E E R S
Project Number: U1891-0383-171
April 13, 2017
I" Light Energy Inc.
1869 Moffat Boulevard
Manteca, CA 95336:
ATTENTION: Brian Vitale
REFERENCE: 46600 Adams Street, La Quinta, CA 92253
Solar Panel Installation
UTAH OFFICES
Sandy
Layton
St. George
RECEIVE®
NOV 2 8 2017
CITY OF LA QUINTA
COMMUNITY DEVELOPMENT
Dear Mr. Vitale:
Per your request, we have reviewed the layout relating to the installation of solar panels at the above -referenced site.
The following materials and components are proposed in the installation of the solar panels.
Roof Material: Metal Seam
Based upon our review, it is our conclusion that the installation of solar panels on this existing roof will not adversely
affect the structure of this house. The design of supporting members is by the manufacturer and/or installer. The
adopted building code in this jurisdiction is the 2016 edition of the California Building Code which references ASCE 7-
10. Appropriate design parameters which must be used in the design of the supporting members and connections are
listed below:
Design wind speed for risk category II structures: 110 mph (3-sec gust)
Wind exposure: Category C
Our conclusion regarding the adequacy of the existing roof is based on the fact that the additional weight related to the
solar panels is less than 3 pounds per square foot. In the area of the solar panels, no 20 psf live loads will be present.
Regarding seismic loads, we conclude that any additional forces will be small. With an assumed 'roof dead load of 15
: psf, solar panel dead load of 3 psf, and affected roof area of 36% (maximum), the additional dead load (and
consequential seismic load) will be 9.9%. This calculation conservatively neglects the weight of wall dead load.
Because the increase is less than 10%, this alteration meets the requirements of the exception in Section 3404.4 of the
2016 edition of the California Building Code. Thus the existing structure is permitted to remain unaltered.
During design and installation, particular attention must be paid to the maximum allowable spacing of attachments and
the location of solar panels .relative to roof edges. The use of solar panel support span tables provided by the
manufacturer is allowed only where the building type, site conditions, and solar panel configuration match the
description of the span tables. Attachments to existing roof joist or rafters is by others and must be spaced at a
maximum of 48" O.C. and staggered so as not to over load any existing structural member. Waterproofing around the
roof penetration is the responsibility of others. All work performed must be in accordance with accepted industry -wide
methods and applicable safety standards. Vector Structural Engineering assumes no responsibility for improper
installation of the solar panels.
Please note a representative of Vector Structural Engineering has not physically observed the roof framing. Our
conclusions are based upon the assumption that all structural roof components and other supporting elements are in
good condition, free of damage and deterioration, and are sized and spaced such that they can resist standard roof loads.
Very truly yours, ,
VECTOR STRUCTURAL ENGINEERING, LLB`
CITY OF'L.A QUINTA
BUILDING & SAFETY DEPT. W 5
Jacob S. Proctor, P.E. : APPROVED
Project Engineer
FOR CONSTRUCTION
JSP/d d - Sp CIVIC
g 9 OFCAl�FO�
08/11/2017
9138 S. State St., Suite 101 / Sandy, UT 84070 / T (801) 990-1775 / F (801) 990-1776 I wwwxectorse.com
C T O
JOB NO.: U1891-0383-171 "..
R
.
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.. PROJECT: ESS 1561 RESIDENCE
SUBJECT: WIND PRESSURE
Com onents and Claddin' Wind Calculations
i
Label: ' Solar'Panel-Array
Note: Calculations per ASCE 7-10W_
SITE -SPECIFIC WIND PARAMETERS:
• '
Basic Wind Speed [mph]: -110'
Notes:
Exposure Category: C .
Risk Category: . 11
ADDITIONAL INPUT & CALCULATIONS:
Height of roof, h [ft]:
20
(Approx'imate)
Comp/Cladding Location:
Gable Roofs-6 <_ 7°
Enclosure Classification:
Enclosed Buildings
Zone 1 GCP:
1
Figure 30.4-2A (enter largest abs. value) r • :� �;
Zone 2 GC P.
1.8
=
(enter largest abs.- value). _; ".. '•..,'
Zone 3 GCP:
2.8
(enter largest abs. value)
a: 9.5
Table 26.9-1
z9 [ft]: 900
Table 26.9-1
Kn: ,. 0.902
Table 30.3-1
K 1
Equation 26.8-1 •
' '
' 0.85
Table 26.6-1 • , •
s=
Velocity Pressure, qh [psf]: , •23.7
Equation 30.3-1 -
GCP;: 0
Table 26.11-1 (largest abs. value) `•� r ' '
OUTPUT:
— GC — GC
p — qh
e
P .f' Pi
Zone 1 Pressure, p [psf]: '23.75
rpsf nteri'UM-ffea"(1-0VV I
` Zone 2.Pressure, p [psf]: 42.74
�psf (:1,.01N,I.End;on a*J'
a. Zone 3 Pressure, p [psf]: 66.49
psf ,(1 0W, Qorgergq t*jw, itheinr
_
...
a=assumed_3qqA
'
TP-1
YID
'4-
JOB NO.: U1891-0383-171
VECTOR.....:..
E n o i n E E R S
PROJECT -.ES S 1561 RESIDENCE SUBJECT: SEISMIC LOADS
COMPARE WIND & SEISMIC LOADS FOR CONNECTION (1 Sq. Ft. Section)
Wind Load, W:
Wind pressure, p: Wf4X2U psf (Zone 1: 0.6 W from wind pressure calculation)
Height, h: 1.0 ft
Width, w: 1.0 ft
FPerp: 14'2 ` : lb (Uplift) Wind Controls Connection Design
Seismic Load, E:
Risk Category: Fa: 1.0
Seismic.Design Category: D Fv: 1.5
IP: 1.00 SMS: 1.575
Site.Class: MD= SM1: 1.118
RP: S115M SDS: 1.050
SS: 1.575 SD1: 0.745
S, : 0.745
ap: M1M 0.7 * Fp,min: 0.661 lb
z: 1.0 ft 0.7 * Fp,max: 3.528 lb,.
h: 1.0 ft 0.7 * Fp,vert: 0.441 lb_
z/h: 1.0 0.7 * Fp,long: 1.764 lb
0.7*Fp,perp: 0:4410` lb (uplift)
CHECK INCREASE IN OVERALL SEISMIC LOADS
SEISMIC:
Estimated Roof Dead Load
11
Max. % of Roof w/ Panels
36.2824-1547
Dead Load from Panels
3
Total Dead Load
12.1
Increase in Dead Load
9.9%
psf
psf
psf (DL+% of.roof w/ Panels*Panel DL)
Conservatively neglecting the weight of existing wall materials, the installation of the solar panels
represents an increase in the the total weight (and resulting seismic load) of 9.9%. Because the
increase is no more than 10%, this addition meets the requirements of the exception in Section 403.4
of the 2016 CEBC. Thus the existing structure is permitted to remain unaltered.
JOB NO.: U1891-0383-171
E n G I n E E R S
PROJECT: ESS 1561 RESIDENCE SUBJECT: CONNECTION CAPACITY
Lag Screw Connection . =
Capacity: ,. Demand:
Lag Screw Size: 5/16
Pressure . Max Max. Trib
Cd: 1.6 (0.6 Wind) Spacing Area I. Max. Uplift
Embedment: 2.5 in (psfl tft) (ft2) Force (Ibs)
Grade: SPF (G = 0.42)
Capacity: 205 Ibs/in. emb. Zone 1:
Number of Screws: 1 - Zone 2:
Total Capacity: 820 Ibs Zone 3:
14.2
4
12
25.6
4
12
[jl7fll-
39.9
4
.12
JOB NO.: U1.891-0383-171
ET
E n _
O I: .n . E E R S
PROJECT:' ESS 1561 RESIDENCE SUBJECT: GRAVITY LOADS,
CALCULATE ESTIMATED GRAVITY LOADS j
Increase due to Original' ;
DEAD LOAD (D) pitch loading.
Roof Pitch/12 0.0
Metal Seam 2:5 1.00.: 2.50 psf
1 /2" Plywood 1.0 1.00 1.00 psf
Framing 3.0 psf
Insulation'" 0.8 psf
1/2" Gypsum Clg.. 2.2 psf
M, E & Misc .. 1.5 psf
DL 11.0'psf
T .1
PV Array DL 3.0 psf
ROOF LIVE ,LOAD (Lr) ' 1
Existing Design Roof Live Load [psf] 20 JASCE 7-10, Table 4-1
Roof Live Load With PV Array [psf] 0 2015 IBC, Section 1607.12.5
SNOW LOAD (S): Existing 'With PV Array
_ Roof Slope (:12),'
Roof Slope [0]:
Snow,Ground Load, p9' [psf]:
Terrain Category:. ,
Exposure of Roof:
Exposure Factor, Ce: '
Thermal Factor, 'C,:
Risk Category:
Importance Factor, IS:
Flat Roof Snow Load, pf [psf]: ,
Minimum Roof Snow Load, pm [psf]:
Unobstructed Slippery Surface?
Slope Factor Figure:
Roof Slope Factor, Cs:
Sloped Roof Snow. Load, ps [psf]:
Design Snow Load, S [psf]:
0.0
0.0
0
0
0
0
C
C
Fully Exposed
Fully Exposed
0.9
0.9 .
1.1
1.1
II
II
1.0
1.0
0
0
0
0
No
Yes
Figure 7-2b
Figure 7-2b
1.000
1.000-
0
0
0
0
ASCE 7-10, Section 7.2
ASCE 7-10, Table 7=2
ASCE 7-10, Table 7-2
ASCE 7-10, Table 7-2 !
ASCE 7-10, Table 7-3
ASCE 7-10, Table 1.5-1
ASCE 7-10, Table 1.5-2 -
ASCE 7'10, Equation 7.3-1
ASCE 7-10, Section 7.3.4
ASCE 7-10, Section 7.4
ASCE 7-10, Section 7.4
ASCE 7-1.0, Figure 7-2
ASCE 7-10, Equation 7.4-1
JOB NO.: U1891-0383=171
E -TOR
E n o _i' n E E R. S
PROJECT: ESS 1561 RESIDENCE SUBJECT: LOAD COMPARISON
Summary of Loads
Existing. With PV Array
D [Psfl
Lr [Psfl
S [Psfl
Maximum. Gravity Loads: -
Existing With PV Array
D + Lr [psq 31 14 ASCE 7-10, Section 2.4.1
D + S [psf] 11 14 ASCE 7-10, Section 2.4.1
Maximum Gravity Load [psfl:1 31 14
Ratio Proposed Loading to Current Loading:. 45.2% OK