Piped drainage is the installation of perforated plastic pipes on top of a bed of gravel ... lower than the rest of the drain ...

A perforated drain pipe should have been placed alongside or ... The gravel should have extended up to within 4 inches of the top of the final grade, where you have grass growing.

The drain itself consists of a trench with a perforated drain pipe in the bottom, backfilled with coarse gravel. Alternatively, a lightweight, prefabricated French drain pipe can be used ...

4 in. x 10 ft. Triplewall Solid Drain Pipe ... head to blast out any stubborn blockages. Can you use a perforated drainage pipe? A perforated pipe has too many holes. We wouldn't use something ...

Other times it may consist of a complex system of underground pipes and pumps. A French drain foundation system consists of perforated underground pipes wrapped in landscape fabric and surrounded ...