A. Except as hereinafter provided, the California Residential Code, 2022 Edition (Part 2.5, Title 24, California Code of Regulations) (“CRC”), which incorporates and amends the International Residential Code, 2021 Edition, published by the International Code Council, is hereby adopted as the residential code of the city of Yucaipa for regulating the design, construction, quality of materials, erections, installation, alteration, repair, location, replacement, addition to, use or maintenance of residential buildings in the city of Yucaipa, and providing for the issuance of permits and collection of fees therefor; and each and all of the regulations, provisions, conditions and terms of such “International Residential Code,” 2021 Edition published by the International Code Council, not adopted or amended in the California Residential Code, which are on file in the office of the building division of the community development department in the city of Yucaipa, are hereby adopted by reference and made a part hereof as if fully set out in this chapter.
B. A copy of the residential code of the city of Yucaipa shall be maintained in the office of the building division of the community development department in the city of Yucaipa, and it shall be made available for public inspection while this code is in force.
C. Amendments.
1. Table R301.2 of the CRC is amended to read as follows:
TABLE 301.2
CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA
2. Sections R403.1.2, R403.1.3, R403.1.3.1—R403.1.4, R403.1.3.6, and R403.1.6.1 of the CRC are amended to read as follows:
R403.1.2 Continuous footings in Seismic Design Categories D0, D1, D2, and E. Exterior walls of buildings located in Seismic Design Categories D0, D1, D2, and E, must be supported by continuous solid or fully grouted masonry or concrete footings. Other footing materials or systems must be designed in accordance with accepted engineering practice. The braced wall panels at exterior walls of buildings located in Seismic Design Categories D0, D1, D2 and E must be supported by continuous footings. All required interior braced wall panels in buildings must be supported by continuous footings.
The exception is deleted in its entirety.
R403.1.3 Footing and stem wall reinforcing in Seismic Design Categories D0, D1, D2 and E. Concrete footings located in Seismic Design Categories D0, D1, D2, and E, as established in Table R301.2(1), must have minimum reinforcement in accordance with this section and Figure R403.1.3. Reinforcement must be installed with support and cover in accordance with Section R403.1.3.5.
R403.1.3.1 Concrete stem walls with concrete footings. In Seismic Design Categories D0, D1, D2, and E, where a construction joint is created between a concrete footing and a concrete stem wall, a minimum of one No. 4 vertical bar must be installed at not more than four feet (4') on center. The vertical bar must have a standard hook and extend to the bottom of the footing and must support and cover as specified in Section R608.5.4.5. A minimum of one No. 4 horizontal bar must be installed within 12 inches of the top of the stem wall and one No. 4 horizontal bar must be located 3 to 4 inches from the bottom of the footing.
R403.1.3.2 Masonry stem walls with concrete footings. In Seismic Design Categories D0, D1, D2, and E, where a masonry stem wall is supported on a concrete footing, a minimum of one No. 4 vertical bar must be installed at not more than four feet (4') on center. The vertical bar must have a standard hook and extend to the bottom of the footing and must have support and cover as specified in Section R403.1.3.5.3 and extend a minimum of 14 inches into the stem wall. Standard hooks must comply with Section R608.5.4.5. A minimum of one No. 4 horizontal bar must be installed within 12 inches of the top of the wall and one No. 4 horizontal bar must located 3 to 4 inches from the bottom of the footing. Masonry stem walls must be solid grouted.
R403.1.3.3 Slabs-on-ground with turned-down footings. In Seismic Design Categories D0, D1, D2, and E, slabs on ground cast monolithically with turned-down footings must have a minimum of one No. 4 bar at the top and the bottom of the footing or one No. 5 bar or two No. 4 bars in the middle third of the footing depth. Where the slab is cast monolithically with the footing, No. 3 or larger vertical dowels with standard hooks on each end must be installed at not more than 4 feet on center in accordance with Figure R403.1.3, Detail 2. Standard hooks must comply with Section R608.5.4.5.
R403.1.3.4 Interior bearing and braced wall footings in Seismic Design Categories D0, D1, D2, and E. In Seismic Design Categories D0, D1, D2, and E, interior footings supporting bearing walls or braced wall panels, and cast monolithically with a slab on grade, must extend to a depth of not less than 12 inches below grade.
R403.1.3.6 is deleted in its entirety.
R403.1.6.1 Foundation anchorage in Seismic Design Categories C, D0, D1, D2, and E. In addition to the requirements of Section R403.1.6, the following requirements apply to wood light-frame structures in Seismic Design Categories D0, D1, D2, and E and wood light-framed townhouses in Seismic Design Category C.
3. Section R902.1 of the CRC is amended to read as follows:
R902.1 Roof covering materials. Roofs shall be covered with materials as set forth in Sections R904 and R905. A minimum Class A or B roofing shall be installed in areas designated by this section and in accordance with the High Fire Area requirements as set forth in other portions of this code. Class A or B roofing required by this section to be listed and tested in accordance with UL 790 or ASTM E 108.
4. Section R902.1.2 of the CRC is amended to read as follows:
R902.1.2 Roof coverings within all other areas. The entire roof covering of every existing structure where more than 50 percent of the total roof area is replaced within any one-year period, the entire roof covering of every new structure, and any roof covering applied in the alteration, repair, or replacement of the roof of every existing structure, shall be fire-retardant roof covering that is at least Class B.
5. Section R902.2, first paragraph, of the CRC is amended to read as follows:
R902.2 Fire retardant-treated shingles and shakes. Fire-retardant-treated wood shakes and shingles are wood shakes and shingles complying with UBC Standard 15-3 or 15-4 which are impregnated by the full-cell vacuum-pressure process with fire-retardant chemicals, and which have been qualified for use on a Class A or B roof.
(Ord. 417 § 3, 2022)