Weep hole design
Weep hole design
(OP)
Is there any write up on weep hole design for retaining wall? I'm especially intereted in how one would specify the spacing & size of the weep hole. Most retaining walls are seperated by a layer of cohesionless material such as sand, aggregates, rock frafment etc. I'm assuming the layer of sand & the weep holes serve to release the hydrostatic pressure & lowering the water table. However, the rate of flow or seepage is not addressed. Thanx in advance





RE: Weep hole design
In your case, the expected volume of water per width of wall, for example can be estimated by completing a flow net. That would provide some idea on spacing of the weep hole. For the size of the hole, it should be adequate for the flow, without washing the materials behind.
RE: Weep hole design
Stripdrain 80 from Contech Construction Products, Portland, Oregon ) is one such geocomposite drainage system, there are many many others out there to choose from.
Regards...