Whether the wall is made from stones, bricks or wood, it is important to provide a barrier between the building blocks and the soil. Landscape fabric is thin and sturdy and is a simple way to preserve a retaining wall’s construction.Click to see full answer. Then, do you have to put drainage behind a retaining wall?Second, a retaining wall must have properly compacted backfill. In order to provide proper drainage, at least 12 inches of granular backfill (gravel or a similar aggregate) should be installed directly behind the wall. Compacted native soil can be used to backfill the rest of the space behind the wall.Likewise, do all retaining walls need weep holes? So, weep holes are not required. But when the structure is situated below the water table and extra pressure of water acts on the structure which is more than the saturated pleasure or the earth pressure, weep holes are required. Subsequently, question is, what slope requires a retaining wall? You can slope soil at a maximum of about 35 degrees, if it is mostly granular soil. Any steeper and you need a retaining wall of some sort to keep the soil in place.Will a retaining wall help a water problem?Retaining walls can help divert water away from foundations during flooding. Often they are just a part of a water flow management solution. Combined with proper guttering, French drains and foundation swales, most water can be diverted away from the foundation and home.
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