Landscape · L-CF2HS

Concrete Seat Wall

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A cast-in-place concrete seat wall is supported by continuous concrete piers founded in undisturbed soil or compacted fill. The wall is 18 inches wide with a height ranging from 18 inches to 21 inches above finish grade, featuring a 2 percent slope on top and a three-quarter inch chamfer on all top sides. Reinforcement consists of continuous number four horizontal bars and number four vertical bars at 16 inches on center with a two-inch minimum cover. The wall rests on 12-inch diameter concrete piers cast in sonotubes spaced at a maximum of four feet on center, anchored by three number four J-bars per pier. Notes specify that the top of the wall must be set level, masonite forms must be used to provide a smooth finish free of form lines, wood grain, and honeycombing, and form ties are prohibited in favor of exterior bracing.

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