PVC-U Underground Drainage Bends
Bends for buried drainage, available in the shallow angles that a drain run actually needs. Sharp changes of direction below ground are avoided wherever possible because they collect solids and cannot be rodded through easily.
Also searched as: underground bend, drainage bend, 45 degree bend, long radius bend, rest bend, sewer bend
Angles
Standard angles are 15°, 30°, 45° and 87.5°. Use the shallowest angle that achieves the change of direction, and prefer two shallow bends to one sharp one. A long-radius rest bend is used where a vertical stack turns into the horizontal drain.
Access at bends
Any change of direction is a potential blockage point. Provide an inspection chamber or a rodding eye at or near significant direction changes so the run either side can be cleared.
Sockets
Single-socket and double-socket patterns are produced. Double-socket bends join two plain-ended pipes; single-socket bends have a spigot for entry into another fitting or a chamber.