How do you build a retaining wall on a slope?
- Place the drain pipe at the lowest possible point toward the back of the trench.
- Place a minimum of 6 in. …
- Excavate the second step up making sure to accommodate for the base material and buried block. …
- Place the base course of blocks on the base material and check for level.
- Fill the hollow cores and 12 in.
Do small retaining walls need drainage?
Although there are exceptions, most retaining walls require gravel backfill, soil compaction, pipe or toe drains, and weep holes. Together, these four features will provide adequate drainage for most designs. Only a few types of walls will not require all of them.
What is the easiest retaining wall to build?
While retaining walls of this type are relatively inexpensive, they can be difficult to repair or remove. For the average do-it-yourselfer, building a retaining wall is easiest when using masonry blocks that will be stacked no taller than three feet, with no mortar binding the stones or concrete members.
What is the strongest type of retaining wall?
Concrete and Masonry Retaining Walls
Poured concrete is the strongest and most durable choice for retaining walls. It may also be carved and formed to look like mortared stone depending on your taste.
What is the cheapest type of retaining wall?
What is the cheapest retaining wall material?
- Treated pine and is the least expensive material. …
- Hardwood is more expensive than treated pine. …
- Railway sleepers are another – slightly more expensive – option and are built to withstand ground and water contact.
- Concrete sleepers are more expensive.
How do I build a small retaining wall?
Build the Retaining Wall
- Step 1: Prepare the First Row. …
- Step 2: Level the First Block. …
- Step 3: Lay the First Row. …
- Step 4: Adjust for Level. …
- Step 5: Prepare for the Second Row. …
- Step 6: Cut a Block to Start the Second Row. …
- Step 7: Begin Laying the Second Row. …
- Step 8: Add Landscape Fabric.
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.
What blocks are best for retaining wall?
Timber and inter-locking-concrete-block walls are great DIY retaining wall ideas. Mortared masonry and poured concrete ones are usually best left to a mason.
Does a retaining wall need a footer?
A concrete footing serves as the foundation of many construction projects. … If you plan to use brick, cinder block or stone that will include the use of mortar, then a concrete footing is recommended. If you are building a segmental retaining wall, then you will not need a footing.
Do you need rebar in a block wall?
Wall Size. … A freestanding garden wall or block privacy fence will require less reinforcing than a basement or other load-bearing wall in a house or other building. An 8-foot-high wall will obviously require more rebar than a 4-foot wall. Very short walls, under 4 feet and laid with mortar, may not require any rebar.
WHY DO Retaining walls fail?
The reasons for these types of failures are lack of proper reinforcement, improper drainage behind the wall (lack of weep holes or clogged holes), foundation footing problems, settlement or expansion of the soil, overloading of the wall, construction errors, and/or other design errors.
What slope requires a retaining wall?
A few things to keep in mind are: What is the slope? If the slope is greater than a 3:1, consult with an engineer. If the slope is over 2:1, it will require structures or special stabilization techniques.