AgdaPkt 2019-10-28 Joint SA PFA - Laserfiche WebLink

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8.113. - Page 39 of 63 may grant modifications for individual cases. The design professional shall submit findings to the building official demonstrating a special and unique reason makes the strict letter of the technical code impractical, the modification is in conformity with the intent and purpose of the technical code, and that such modification does not lessen health, life safety and fire safety requirements or any degree of structural integrity. The details of actions granting modifications shall be recorded and entered in the files of the building division. Sec. 9.231. - SECTION 150.1(B) 2 OF THE ENERGY CODE AMENDED: Section 150.1(b) 2 of the Energy Code is amended to read as follows: 2. Additions and Alterations to Existing Buildings. The Energy Budget for additions and alterations is expressed in terms of TDV energy. A building complies with the performance standards if the energy consumption calculated for the Proposed Design Building is no greater than the energy budget calculated for the Standard (Baseline) Design Building. Sec. 9.232. - SECTION 150.1(C) OF THE ENERGY CODE AMENDED: Section 150.1(c) of the Energy Code is amended to add Section 150.1(c) 15 to read as follows: 15. Additional Prescriptive Requirements for Mixed -Fuel Buildings. A. Mixed -Fuel Single Family 1. Ducts shall comply with 2019 Reference Appendices RA3.1.4.1.3, which requires that all ductwork shall be located entirely in conditioned space and shall be confirmed to have less than or equal to 25 cfm leakage to outside when measured as specified by Section RA3.1.4.3.8. 2. Slab floor perimeter insulation shall be installed with an R -value equal to or greater than R10. The minimum depth of concrete -slab floor perimeter insulation shall be 16 inches or the depth of the footing of the building, whichever is less. 3. Design the hot water distribution system to meet minimum requirements for the basic compact hot water distribution credit according to the procedures outlined in the 2019 Reference Appendices RA4.4.6 4. Central Fan Integrated Ventilation Systems. The duct distribution system shall be designed reduce external static pressure to meet a maximum fan efficacy equal to: Gas Furnaces: 0.35 Watts per cfm Heat Pumps: 0.45 Watts per cfm, according to the procedures outlined in the 2019 Reference Appendices RA 3.3. 5. Include either: a. 5 kWh battery of battery storage, OR b. A solar water heating system with a minimum solar savings fraction of 0.20. ATTY/ORD.504/CC ORDINANCE ADDING CALIFORNIA ENERGY CODE & GREEN BUILDING STANDARDS REV: 10-24-19 RL Page 11 of 18 183