The slab opening is reinforced with two number four diagonal bars eight feet long centered on each corner of the opening. Five number three bars spaced at two inches on center extend four feet past the corners of the openings on each side. Additional bars are placed in the same plane as the typical mat reinforcing. Openings greater than two feet are framed with channel sections as indicated in the structural drawings.
(2) #4x8'-0" LONG DIAG. BAR CENTERED ON CORNER OF OPENING, TYP. (5) #3 BARS @ 2" O.C., TYP. EXTEND 4'-0" PAST CORNERS OF OPENINGS, TYP. ADD'L. BARS PLACED IN SAME PLANE AS TYP. MAT REINFORCING NOTES: 1. OPENINGS GREATER THAN 2'-0" TO BE FRAMED WITH C12x20.7 AS SHOWN ON . OPENING 4 S-155051
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