A cast-in-place concrete curb sits adjacent to a concrete walk with a thickened edge. A half-inch expansion joint separates the walk from the curb, which features tooled half-inch radius edges at the top corner. The walk rests on a prepared subgrade with a thickness sized per plans, featuring an eight-inch wide thickened edge bearing. The curb sits on aggregate base or concrete with an eighteen-inch minimum depth extending down to natural grade. General notes specify half-inch expansion joints at sixteen feet on center maximum and at curve tangents and corners.
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