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Part III, Chapter 5, Section R506.1 is amended by adding the following:
In lieu of a more detailed design per Section 1808.6 of the 2019 California Building Code, the following minimum requirements for concrete slab on ground shall apply:
Slab floors shall be reinforced as set forth in Title 8, Section 8-1.17 Table 1809.7 (1).
All slabs founded on soils found to be in an expansive index of over fifty (50) shall be doweled into foundation walls with No. 3 minimum reinforcing steel bars bent twelve (12") inches minimum into the wall and thirty-six (36") inches minimum into the slab at twenty-four (24") inches maximum on center. Interior walls with continuous footings/foundations shall have similar floor ties.
An alternate design, such as a floating slab eliminating the requirement for doweling, may be submitted to the Building Official for approval.
Section R506.2.1 "Fill" is amended to read as follows:
Refer to Title 7, Chapter 3 and Section 8-1.24 of the Thousand Oaks Municipal Code for grading regulations, administered by the Department of Public Works, for requirements governing excavation, grading and earthwork construction including fills and embankments.
Loose fill shall be compacted in an approved manner and to the satisfaction of the Building Official or shall be removed and replaced with coarse sand or gravel.
Section R506.2.3 "Vapor retarder" is amended to read as follows:
An approved moisture membrane with a thickness of six (6) mils minimum shall be installed in an approved manner under all interior concrete slab areas except residential garage slab areas.
(§ 5, Ord. 1669-NS, eff. January 10, 2020)