Question

The height of a retaining wall is 5.5 m. It is to be designed as
1. Cantilever type
2. Counterfort type
3. Cantilever or counterfort type
4. None of the above

Answer 1

Correct Answer - Option 1 : Cantilever type

Explanation:

Retaining wall:

• A retaining wall or retaining structure is used for maintaining the ground surfaces at different elevations on either side of it.
• Whenever embankments are involved in construction, retaining walls usually necessary.

Types of retaining wall:

• Depending upon the mechanisms used to carry the earth's pressure, These are classified into the following types.

1. Gravity retaining wall.
2. Cantilever retaining wall.
3. Butters wall.

Gravity retaining wall:

• It is not used for heights of more than 3.0 m.
• In it, the resistance to the earth's pressure is generated by the weight of the structure.

Cantilever retaining wall:

• It is the most common type of retaining wall and its height ranges up to 10-25 feet (3 to 8m).
• Counterfort retaining walls are economical for height over about 6 m.
• A cantilever retaining wall resists the earth pressure horizontal & another, by the cantilever bending action.