Another method for relieving hydrostatic pressure is to install a drainage pipe behind the wall.
Perforated drain pipe installation retaining wall.
1 2 m tall will require a toe drain.
Some of these drains are vented through the front of the retaining wall while others may run the length of the wall and drain out to the sides.
I hear arguments for both methods but it really depends on how the pipe functions in your drainage system before going any further the pipe we are discussing here is heavy duty.
Backfilling the space behind the blocks with crushed stone and then installing a flexible perforated drainpipe available at the home depot also called drain tile at the base of the wall.
This should be a perforated pipe to allow water to enter it through the length of the wall.
How and why holes point down when installing a french drain gravel perforated pipe yard drain see how a french drain really works.
I was going to use a perforated 100mm flexible pipe in a geo textile sleeve bedded in gravel but i can t find a product that would allow me to t off smaller diameter weep holes at regular intervals what can i use without spending the earth or should i just bing the pipe out of the wall at one.
Perforated drains allow the water to flow out of the wall preventing it from collapsing under the weight of too much water.
Drain pipes used in toe drain applications must be properly vented a minimum of every 50 ft.
Steven baczek a residential architect from reading mass who specializes in designing durable low energy homes responds.
Pipe drains also known as toe drains are perforated pipes that collect water along the length of the wall and drain it to the outside.
Hi i m building a retaining wall in my garden a need to put a drain at the foot of the wall.
Retaining walls with a height greater than a few feet should also have weep holes that are regularly spaced in the vertical direction forming a grid pattern.
To accomplish this vent the drain pipe to daylight or a lower elevation on the site.
When i use perforated pipe in a drainage system should the holes go up or down.
No perforated drain pipe.
Sites with poor draining soils or walls over 4 ft.