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Stone Retaining Wall Water Seepage Issue?

Engineering Asked by DerekOS on November 14, 2020

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Hi all,

A boundary retaining wall we have is seeping water in a couple of places at the very bottom only after a downpour. This lasts for days and will eventually dry up with enough time but the water pools near the wall as can be seen in the pic. From what I can tell, the wall is part of a soak-away system and is approximately 30yrs old. It’s a double leaf wall? block/concrete internally with Stone on both sides and pilasters along the construction. Should I be concerned or is there anything I can do to remedy this?

TIA,

Derek

One Answer

You should be concerned a bit. During the heavy rains the wall is supporting both the pressure of the saturated heavy backfill and hydrostatic watter pressure at the same time.

Repairs can be costly. You need to install sump pits or just pits filled with gravel every few feet on the back of the retaining wall and allow them to drain through pipes across the wall.

You can investigate around your neighborhood and see what are the doing and if it has solved the issue for them. If there is an accepted method it means you can find skilled people who can do it.

Answered by kamran on November 14, 2020

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