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Storm Drainage Piping and Roof Drains
Storms may cause flood, erosion, sedimentation, algae blooms, and loss of habitat. Storm drainage piping is important to provide proper drainage control. The management of storm water run-off is possible by surface and sub-surface drainage. Drainage structures take forms in drainage manholes, catch basins, drainage inlets or yard drainage. Drainage piping is a system of sewer pipes, fittings, and appurtenances for gravity flow of storm drainage. Storm drainage piping and underdrainage piping system are installed using concrete, clay, steel, ductile iron, aluminum, PVC and PE pipe and accessories. Materials must be corrosion-resistant. Inspection of piping system and test for leaks and defects are necessary. Cleaning of the interior of storm drainage piping involves the removal of dirt and debris.
Debris from trees, industrial activity, and wildlife activity accumulates on roofs. Good roof drainage design is therefore important during rainfall events or storms. A roof drain is part of a roof drainage design. It carries water from homes or commercial buildings to avoid water seeping down basement walls or under slab foundations. An example of a roof drain may consist of a vandalproof cast aluminum dome strainer with hinged access gate, cast aluminum stabilizer ring, s. s. mounting bolts, flat pan-formed copper drain body and expansion outlet, with copper ferrule, and cast aluminum underdeck plate.
Roof drains must meet certain requirements. Examples are:
-the number and size shall be in conformance with the Uniform Plumbing Code
-downspouts shall be tied into a non-perforated, rigid, smooth-bore pipe, with drains to an approved storm system
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-drainpipes shall meet material standards for examples of pipes
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