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Facility Design Guidelines - Facilities Management - University of ...

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Minimum inside size for drop inlets shall be 24” with up to 18” pipe diameter and 4-feet<br />

maximum depth. Minimum inside size <strong>of</strong> drop inlet shall be 48” for pipe size larger than<br />

18” pipe diameter or greater than 4-feet depth.<br />

Area drains, cleanouts and yard drains installed with minimum pipe size and cover shall<br />

use shallow cast iron fittings or heavy-duty HS 20.traffic rated fittings installed in<br />

concrete pad at surface.<br />

VDOT standard structures are to be used except where not practical. The intent <strong>of</strong> this<br />

requirement includes minimal dimensions as accessibility for maintenance. In historic<br />

precincts or locations, smaller dimensioned structures will require approval on a caseby-case<br />

basis by <strong>Facilities</strong> <strong>Management</strong>.<br />

SW 4 SITE DRAINAGE SYSTEMS 108

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