Retaining wall construction detail

How thick does a retaining wall have to be?

Rules of thumb commonly used by designers to establish the geometry of the wall include (refer to diagram): Base width = 1/2 to 1/3 of the height of the wall . Base thickness = 1/8 of the height of the wall but not less than 12 inches. Stem thickness = 6 inches + ¼ inch for each foot of wall height.

What is retaining wall in construction?

A retaining wall is a structure designed and constructed to resist the lateral pressure of soil, when there is a desired change in ground elevation that exceeds the angle of repose of the soil. Every retaining wall supports a “wedge” of soil.

What are the types of retaining wall?

The three main types of retaining walls are concrete , and masonry or stone. The materials you choose will depend on the location of the wall, the aesthetic qualities you prefer, and how long you expect the wall to last. A retaining wall is used to contain soil and hold it in place in areas where a slope is present.

What is purpose of retaining wall?

The purpose of all retaining walls is to hold soil behind them. However, the specific needs will vary depending on the project. Walls can range from small landscape stone walls to surround a garden to enormous soil- retaining projects along a highway.

What is the easiest retaining wall to build?

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. (For a curved wall , mark instead with a garden hose or spray paint.)

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Do you need drainage behind a retaining wall?

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 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.

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 is a gravity retaining wall?

Gravity Retaining Walls A retaining wall that relies solely on it’s own weight to stand up is called a gravity wall . Allan Block combines the basic engineering principles of setback, leverage and total unit mass with simple mechanics to make highly stable gravity walls .

What is the minimum height of a retaining wall?

900mm

What is the best material to use for a retaining wall?

Retaining Wall Materials Comparison Chart

TYPE OF MATERIAL PROS
Poured Concrete Stronger than a block wall Variety of design options
Brick Strong and durable
Wood Accessible materials Fairly simple installation
Dry Stone/Boulder The most natural solution to grade change
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What is difference between re wall and retaining wall?

Retaining wall is the traditional method of retaining backfill at different slopes and height. It is mainly a rigid structure(except gravity retaining wall ) which is designed to take the lateral load of soil and live loads. RE wall is a self stabilized structure which under its own weight maintain its stability.

When should you build a retaining wall?

You Might Need a Retaining Wall If… You need a way to control downhill erosion. If mountains of erosion materials are clogging important areas on your property, adding a retaining wall is a wonderful idea. Your home is downhill from soil fault lines. Your foundation is threatened by a sliding hill.

Is a retaining wall a structure?

A retaining wall is a strong structure that is made to keep a hill, slope or mound of earth in place. Unlike indoor walls , retaining walls receive pressure horizontally instead of vertically. Due to the weight of the earth behind the wall , a retaining structure must adhere to high construction standards.

How do you build a retaining wall step by step?

Step by Step : How to build a retaining wall Dig a level-bottomed trench wide enough for the base stones to fit into. Compact the bottom of the trench with a hand tamper. Lay landscape fabric in the trench. Start the wall’s second layer using a staggered pattern. Make sure the wall is level.