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draining underground pull boxes

draining underground pull boxes

draining underground pull boxes

(OP)
Anyone know of methods for draining underground pull boxes? Would you even need to install a drain?

RE: draining underground pull boxes

set the box on a layer of free draining gravel or sand and backfill with granular material.  provide a cover which fits tightly and a gasket or seal to prevent water from coming in the top

RE: draining underground pull boxes

Alternatively if your soil is not free draining you can construct a base slab with a sump in one corner big enough to accept a small submersible pump.  Say 300mm x 300mm by 300mm deep.

RE: draining underground pull boxes

I once put a system of underground conduit with manholes that was in a heavy clay soil.

We simply put sump pits in each manhole and ran a 50 mm PVC with a heat trace line from manhole to manhole. The seepage was pumped through 4 manholes before we got close to an existing drain.

Rick Kitson MBA P.Eng

Construction Project Management
From conception to completion
www.kitsonengineering.com

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