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Install Drainage Pipe and Continue Backfilling

10:05
14:50
69K views

At 10:05 in

Retaining walls- SPOTTING short cuts & BAD work

What happens here

A flexible corrugated drainage pipe is installed along the base of the retaining wall, directly behind the blocks. This pipe collects water that seeps through the backfill, preventing hydrostatic pressure buildup behind the wall. The pipe is covered with a filter fabric or geogrid to prevent clogging from fine soil particles. Once the pipe is in place, the backfilling process continues, covering the pipe and the retaining wall blocks.

Goal: Integrate an effective drainage system to relieve hydrostatic pressure.

Tools and materials

  • Filter Fabric / Geogrid N/A — Preventing soil from clogging the drainage pipe
  • Flexible Corrugated Drainage Pipe N/A — Collecting and diverting water from behind the wall
  • Shovel — Spreading backfill material

What they say

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i've seen that become a problem but if you are going to go with a more hollow block i prefer having something that's hollow all the way through so that you can core fill [Music] all right we got to get this downspout hooked back up here so we're going to be getting some rain in about 30 minutes

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