A concrete curb sits adjacent to a concrete walk featuring a thickened edge over compacted subgrade. A 1/2-inch expansion joint separates the walk and the curb, which includes tooled 1/2-inch radius edges. The concrete walk has a variable thickness per plans and rests on prepared subgrade and aggregate base. The concrete curb stands at an 18-inch minimum height above natural grade, with specific dimensions varying per civil plans. Notes specify providing expansion joints at 16 feet on center maximum and at curve tangents and corners.
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