Plumbing · I-4FBDD

Valve Box Installation Detail

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Round valve boxes and 14 inches by 19 inches or 13 inches by 20 inches rectangular valve boxes are set with a minimum 12-inch clearance from edges of lawns, walks, fences, and curbs. Boxes are centered over valves to facilitate servicing with a maximum of two valves per box. Boxes are set 1 inch above finish grade or mulch cover in ground cover and shrub areas, and flush with finish grade in turf areas. Assemblies are positioned in shrub areas where possible and in lawns only when shrub areas are absent, aligned parallel to each other and perpendicular to edges with bolt-down lids installed.

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