A concrete walk with a thickened edge meets a concrete curb separated by a one-half-inch expansion joint with tooled one-half-inch radius edges. The concrete walk features a thickened edge extending eight inches wide with a depth of two times x, where x and slab thickness are sized per plans. The adjacent concrete curb has a six-inch top width, a six-inch vertical face above asphalt concrete, and rests on aggregate base over natural grade with an eighteen-inch minimum overall depth. One-half-inch expansion joints are required at sixteen feet on center maximum and at curve tangents and corners.
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