A quarter-inch thick ASTM A36 steel plate secures to a storm drainage pipe assembly with half-inch stainless steel bolts and one-eighth inch stainless steel washers featuring threaded inserts typically. The orifice size is sized per the drainage plan and features a hot-dipped galvanized finish.
12 " STAINLESS STEEL BOLTS WITH THREADED INSERTS (TYP.) NOTES: 1. STEEL: USE ASTM A 36 STEEL. 2. BOLTS: USE 1/2 INCH STAINLESS STEEL BOLTS WITH 1/8 INCH STAINLESS STEEL WASHERS. 3. FINISH: HOT DIPPED GALVANIZED. 14 " THICK STEEL PLATE 2" TYP. 4" TYP. ORIFICE SIZE (SEE DRAINAGE PLAN) STORM DRAIN PIPE (SEE DRAINAGE PLAN)
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