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BRES2016-0228 Revision 12013 Low -Rise Residential Mandatory Measures Summary NOTE: Low-rise residential buildings subject to the Standards must comply with all applicable mandatory measures listed, regardless of the compliance approach used Exceptions mav apDlv. Review the respective code section for more information. Building Envelope Measures: § I 10.6(a) 1: Doors and windows between conditioned and unconditioned spaces are manufactured to limit air leakage. § I 10.6(a)5: Fenestration products (except field -fabricated windows) have a label listing the certified U -Factor, certified Solar Heat Gain Coefficient (SHGC), and infiltration that meets the requirements of § 10- 11 I(a). § 110.7: Exterior doors and windows are weatherstripped; all joints and penetrations are caulked and sealed. § I 10.8(a): Insulation specified or installed meets Standards for Insulating Material. Indicate type and include on the CF2R. § 110. 8 (i): The thermal emittance and aged solar reflectance values of the cool roofing material meets the requirements of § I 10.8(i) when the installation of a cool roof is specified on the CF I R. § 110.80): A radiant barrier shall have an emittance of 0.05 or less when the installation of a radiant barrier is specified on the CF I R. Minimum R-30 insulation in wood -frame ceiling; or the weighted average U -factor shall not exceed 0.03 1. Minimum R- 19 in a § I 50.0(a): rafter roof alteration. Attic access doors shall have permanently attached insulation using adhesive or mechanical fasteners. The attic access shall be gasketed to prevent air leakage. § I 50.0(b): Loose fill insulation shall conform with manufacturer's installed design labeled R -value. § 150.0(c): Minimum R- 13 insulation in 2x4 inch wood framing wall or have a U -factor of 0. 102 or less (R- 19 in 2x6 or 0.074 maximum U - factor). § I 50.0(d): Minimum R- 19 insulation in raised wood -frame floor or 0.037 maximum U -factor. § I 50.0(g) 1: In Climate Zones 14 and 16 a Class 11 vapor retarder shall be installed on the conditioned space side of all insulation in all exterior walls, vented attics and unvented attics with air -permeable insulation. § I 50.0(g)2: In Climate Zones 1-16 with unvented crawl spaces the earth floor of the crawl space shall be covered with a Class I or Class 11 vapor retarder. In a building having a controlled ventilation crawl space, a Class I or Class 11 vapor retarder shall be placed over the earth floor of § I 50.0(g)3: the crawl space to reduce moisture entry and protect insulation from condensation, as specified in the exception to Section 150.0(d). § 150.0(1): Slab edge insulation shall: have a water absorption rate, for the insulation material alone without facings, no greater than 0.3%; have water vapor permeance rate is no greater than 2.0 perm/inch, be protected from physical damage and UV light deterioration; and when installed as part of a heated slab floor meets the requirements of § I 10.8(g). § I 50.0(q): Fenestration, including skylights, separating conditioned space from unconditioned space or outdoors shall have a maximum U - factor of 0.58; or the weighted average U -factor of all fenestration shall not exceed 0.58. Fireplaces, Decorative Gas Appliances and Gas Log Measures: § I 50.0(e)l A: Masonry or factory -built fireplaces have a closable metal or glass door covering the entire opening of the firebox. § I 50.01(e) I B: Masonry or factory -built fireplaces have a combustion outside air intake, which is at least six square inches in area and is equipped with a readily accessible, operable, and tight -fitting damper or a combustion -air control device. § I 50.0(e) I C: Masonry or factory -built fireplaces have a flue damper with a readily accessible control. § I 50.0(e)2: Continuous burning pilot lights and the use of indoor air for cooling a firebox jacket, when that indoor air is vented to the outside of the building, are prohibited. Space Conditioning, Water Heating and Plumbing System Measures: § I 10.0-§ 110.3: HVAC equipment, water heaters, showerheads, faucets and all other regulated appliances are certified to the Energy Commission. § I 10.3(c)5: Water heating recirculation loops serving multiple dwelling units meet the air release valve, backflow prevention, pump isolation valve, and recirculation loop connection requirements of § I 10.3(c)5. Continuously burning pilot lights are prohibited for natural gas: fan -type central furnaces, household cooking appliances (appli- § 110.5: ances without an electrical supply voltage connection with pilot lights that consume less than 150 Btu/hr are exempt), and pool and spa heaters. §1 50.0(h)l: Heating and/or cooling loads are calculated in accordance with ASHRAE, SMACNA or ACCA using design conditions specified in § I 50.0(h)2. § I 50.0(h)3A: Installed air conditioner and heat pump outdoor condensing units shall have a clearance of at least five feet from the outlet of any dryer vent. § I 50.0(i): Heating systems are equipped with thermostats that meet the setback requirements of § I 10.2(c). § 150.00) 1 A: Storage gas water heaters with an energy factor equal to or less than the federal minimum standards shall be externally wrapped with insulation having an installed thermal resistance of R-12 or greater. § 150.00)] B: Unfired hot water tanks, such as storage tanks and backup storage tanks for solar water -heating systems, have R- 12 external insulation or R- 16 internal insulation where the internal insulation R -value is indicated on the exterior of the tank. For domestic hot water system piping, whether buried or unburied: the first 5 feet of hot and cold water pipes from the storage tank, all piping with a nominal diameter of 3/4 inch or larger, all piping associated with a domestic hot water recirculation system § I 50.00)2A: regardless of the pipe diameter, piping from the heating source to storage tank or between tanks, piping buried below grade, and al I hot water pipes from the heating source to kitchen fixtures must be insulated according to the requirements of TABLE 120.3- A. J)2B- All domestic hot water pipes that are buried below grade must be installed in a water proof and non -crushable casing or sleeve that allows for installation, removal, and replacement of the enclosed pipe and insulation.