A depressed concrete trench is formed directly within a slab on grade to accommodate piping, with thickness and reinforcing sized per structural plans. The main slab reinforcing continues through the trench haunches, utilizing standard hooks at the trench edges and a class 'A' lap splice typically measuring one foot. The thickened edges and sloped transitions follow a one-to-one slope ratio to distribute loads around the recess.
TYP 1 1 SAD FOR PIPE TRENCH DETAILS SLAB REINF SEE PLANS HOOK SLAB REINF AT TRENCH, TYP SLAB ON GRADE REINF TO MATCH SLAB REINF "t" SEE PLANS SLAB THICKNESS TYP CLASS 'A' LAP SPLICE 1'-0" "t"
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