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Discussion :: UPSC Civil Service Exam Questions - Section 2 (Q.No.2)

2. 

The base width of a soil gravity dam is 25 m. The material of the dam has a specific gravity of 2.56 and the dam is designed as an elementary profile ignoring uplift. What is the approximate allowable height of the dam ?
[A]. 64 m
[B]. 40 m
[C]. 164 m
[D]. 80 m

Answer: Option B

Explanation:

No answer description available for this question.
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Engr Shabbir said: (Sep 12, 2014)  
B=H/under root (specific gravity-uplift)
25=H/ Under root (2.56-0)=40m
Nikhil.P.Pillai said: (Oct 16, 2016)  
B = H/root of 2.56.
25= H/1.6,
H = 40.
Trebor said: (Jun 25, 2018)  
Where did you get the 1.6 where the uplift is zero? Please explain.
Harry B. said: (Jul 9, 2018)  
According to me, it is supposed to be 56m unless there is a governing limitation for the base to height ratio. Am I right?
Surendra said: (Apr 14, 2019)  
By ignoring upift B=40 is the correct answer.
Rohit Pal said: (Jul 18, 2019)  
The Correct Answer is option A.

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