WAC 246-359-430
Floors for concrete masonry units (CMU). (1) Floors must be concrete slab on grade and not less than three
and one-half inches thick reinforced with "6 x 6 10/10 welded
wire mesh (wwm)," and be constructed with not less than four
sacks of cement per cubic yard.
(2) When concrete is used as the finished floor it must be
sealed or finished according to WAC 246-359-530, interior
finishes.
[Statutory Authority: RCW 70.114A.081. 99-03-065, §
246-359-430, filed 1/18/99, effective 2/18/99.]