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Question
Cantilever retaining walls can safely be used for a height not more than
dSafVyhoj fjVsfuax nhokjksa dk lqjf{kr :i ls vf/kdre ÅapkbZ rd mi;ksx fd;k tk ldrk gS
A.
3 m
B.
4 m
C.
5 m
D.
6 m
Answer ( Option D)

6 m

Solution

Cantilever retaining wall
• A cantilever retaining wall resists the earth pressure, horizontal and any other, by the cantilever bending action.
• It is the most common type of retaining structure and is generally economical for heights of 6 m to 7m.
Note:
Retaining wall:
A retaining wall (or structure) is used to retain the ground surfaces at different elevations on either side of it.
Types of retaining wall
Depending on the mechanisms used to carry the earth pressure. retaining wall can be classified into following types :
1. Gravity retaining wall
2. Cantilever retaining wall
3. Counterfort retaining wall
4. Buttress wall.
Gravity retaining wall
• In this type of wall, the resistance to the earth pressure is generated by weight of the structure only.
• Plain concrete gravity walls are not used for heights exceeding about 3.0 m.
Buttress wall
• These are structurally more efficient (and more economical) than counterforts.
• But, buttress reduces the clearance is front of the wall and hence is not commonly used.

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