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"Section 1922.10.3 Concrete Slabs on Grade. This section shall apply <br />to concrete slabs on grade in construction related to Groups R-l, R-3, and M <br />occupancies only. <br /> <br /> "Section 1922.10.3.1. Concrete slab floors, garage slabs, and driveways <br />shall have a minimum thickness of three and one-half (3 1/2) inches and shall be <br />reinforced with a minimum six (6) inch by six (6) inch by six (6) gauge welded <br />wire fabric or equivalent area of reinforcing. Welded wire fabric manufactured in <br />mats shall be used. All reinforcement shall be appropriately supported in order <br />to keep the reinforcement in the mid-depth of the slab until the completion of the <br />concrete pour. <br /> <br /> "Section 1922.10.3.2. Under habitable rooms of Groups R-1 and R-3 <br />occupancies, a vapor barrier approved by the Building Official shall be installed <br />beneath the concrete slab floor. Single-ply plastic vapor barriers shall not be <br />used. An approved base material of suitable consistency, compaction, and <br />thickness shall be provided directly under the concrete slab vapor barrier to <br />retard capillary action. Two (2) inches of sand shall be provided between the <br />vapor barrier and the concrete slab. The top of the concrete floor slab shall be a <br />minimum six (6) inches above exterior finished grade." <br /> <br /> "Section 9.45. Section 2320.11.3 of Building Code amended: Section <br />2320.11.3 of the Building Code is hereby amended to read as follows: <br /> <br />ORD-001 4 2165 <br />FXS:jtl:mkc <br />6/1/99 <br /> <br /> <br />