Do I need drainage behind retaining wall?
Do I need drainage behind 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.
Are poured concrete walls cheaper than block?
Poured concrete wall foundations are arguably stronger than cinder blocks. … It is faster and more efficient to construct a poured wall but can be expensive if the cement plant is far away. If the concrete truck has to travel farther than 90 minutes, a cinder block wall foundation would probably be the better choice.
How tall can you build a retaining wall?
Three feet is the maximum recommended height of a stacked stone wall built on a clay surface. It is also the stable height of most stand-alone stone walls. Sandy soil doesn't absorb water, making it ideal for building a retaining wall without reinforcement.
Does a 2 foot retaining wall need drainage?
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.
How long do retaining walls last?
A concrete retaining wall can be expected to last anywhere from 50 to 100 years. Meanwhile, a brick masonry wall can be expected to last at least 100 years, though the quality of the work will play a role here.
Do you need landscape fabric behind retaining wall?
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.
How many retaining wall blocks do I need?
Divide the width of the wall in inches by the width of the block and round up, this is the number of columns. Divide the height of the wall in inches by the height of the block and round up, this is the number of rows. If the top row will be a cap block, then the number of cap blocks needed is the number of columns.
How much will a retaining wall cost?
The average cost of building a retaining wall is $5,377. Most homeowners find themselves spending between $3,193 and $8,382. The cost of retaining wall materials ranges from $3 to $40 per square foot. Wall block prices fall between $10 and $15 per square foot, while precase, poured concrete runs $20 to $25.