Civil Engineering - RCC Structures Design - Discussion


Cantilever retaining walls can safely be used for a height not more than

[A]. 3 m
[B]. 4 m
[C]. 5 m
[D]. 6 m
[E]. 8 m

Answer: Option D


No answer description available for this question.

Debdutta Adhikary said: (Sep 4, 2014)  
What is cantilever retaining wall?

Md. Alamgir Kabir said: (Sep 5, 2014)  
What is cantilever retaining wall?

Gaurav said: (Jan 20, 2015)  
In cantilever wall, stem toe slab heal slab are all acting as cantilevers due to pressure from back fill and soil pressure.

Piyush Singh said: (Sep 3, 2015)  
Cantilever wall are used upto 8 m, there is no restriction on the height only thing is with the increase in height bearing pressure increases and if the foundation soil is not strong then failure will occur,

Nowadays instead of RCC retaining wall, reinforced soil retaining wall are used upto a height of 100 m, in Sikkim a reinforced soil retaining wall of 100 m height is under construction.

Prashnat said: (Jan 6, 2016)  
Cantilever retaining walls can safely be used for a height not more than 5 m.

Jayabrata said: (May 29, 2016)  
Rcc cantilever retaining wall can be constructed up to 150m height if the underlying soil strata are hard enough to have the soil bearing capacity.

Krishna said: (Jun 30, 2016)  
Retaining wall is that which retain the lateral pressure of soil.

Sneha said: (Jul 16, 2016)  
Cantilever retaining wall has a maximum height not more than 5 m.

Swarup said: (Aug 10, 2016)  
Is there any specific provision in Code?

Kimti Manawa said: (Aug 12, 2016)  
I believe that this conjecture that cantilever retaining wall cannot be used for height less than 5m is logically incorrect owing to the fact that with the increase in the span of the cantilever wall, the maximum bending moment at the support will increase thereby making it necessary to increase the thickness of the wall. Even for wall of height greater than 5m, let us say 6m, the thickness of the wall required may be higher and also the base area of the wall for the stability conditions like against overturning, sliding etc. Can also be checked and the wall as overall may come out safe depending upon the design and geometry of the wall. For instance, a shear key may be provided to take into account the sliding force and similarly for overturning, the dimensions of heel and toe slab can be adjusted accordingly.

I also want to know whether there is a standard recommendation on the maximum height of a cantilever retaining wall. If yes, then kindly enlighten me about the same.

Sahana said: (Aug 14, 2016)  
If it exceeds more than 5 m. What happens to the retaining wall?

Naqash Shah said: (Aug 26, 2016)  
Reinforced cantilever walls have an economic height range of 1.200 to 6.000 m; walls in excess of this height have been economically constructed using prestressing techniques.

Chandrakesh Maurya said: (Oct 13, 2016)  
Cantiliever beam are beam which are fixed one end and other end free.

Engr.Zahoor said: (Dec 6, 2016)  
More than 6 m will become uneconomical and unstable.

Makar said: (Apr 26, 2017)  
Every wall height is 3 meter. Then how 6 meter is correct? Anybody tell me please.

Pushap said: (May 7, 2017)  
Max Hight of cantilever retaining wall 6 m if height more then 6m then counterfort retaining wall is required. Counterfort wall more efficient to reduce earth pressure.

Prof Maulik R Joshi said: (Aug 1, 2017)  
Generally, economical up to about 25 ft in height.
Use much less concrete than gravity walls, but require more design and careful construction.
Counter fort retaining walls are more economical than cantilever walls for heights above 25 ft.

Kunal said: (Sep 9, 2017)  
Only Cantilever wall height should be 6 metre.

Mali Jagadish said: (Sep 21, 2017)  
Used for 3 to 8m height.

Gee Kay Arun said: (Oct 6, 2017)  
When the height of the cantilever retaining wall is more than about 7m, it is economical to provide vertical.

Bracing system known as counter forts. So Answer D 6m.

Ajay said: (Oct 20, 2017)  
Retaning wall not more 6m.

Rajpal Yadav said: (Jan 20, 2018)  
D is the correct answer.

Gautam said: (Jan 9, 2019)  
As per my knowledge; D is correct.

Cantilever retaining wall economical for hights 6-7.5 m small to moderate height. So a/c to question 8 m correct.

Sumanta said: (Oct 6, 2019)  
Cantilever retaining wall above 8m its un economical.

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