13+ Drain Pipe Behind Retaining Wall Pictures. Additional piping is fine if it does not increase the water load to the wall's drain line. Second, is having a perforated pipe.
However, the specific needs will vary depending on the project.
Cap the starting end and connect the output end to unslotted pipe, then run to stormwater or another section of slotted drain shallowly buried in the garden as a watering pipe. The perforated pipe leads to hardpipe at one end of the wall, and then drains directly out through a trench to the font of the house. A drain is normally placed behind a retaining wall to relieve hydrostatic pressure in the soil being retained. As you build the wall, backfill gravel behind it at least every other course, covering the pipe and bringing the level of gravel up just below the top of the last course you.
