Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 25 (Q.No. 38)
38.
While aligning a hill road with a ruling gradient of 1 in 20, horizontal curve of radius 80 m is encountered. The compensated gradient on the curve will be
Discussion:
2 comments Page 1 of 1.
MICHAEL LALAWMPUIA said:
8 years ago
Since 1 in 20 is higher than 4% as per IRC Compensation is required.
Grade Compensation is (30+R)/R % where R is Horizontal curve.
But Maximum Compensation is limit to 75/R %.
Hence 75/80=0.9375%.
1 in 20 = 5 %.
Compensation = 5-0.9375= 4.0625 % ~ 4%.
Hence Compensated gradient on the curve is 4% = 1 in 25.
Grade Compensation is (30+R)/R % where R is Horizontal curve.
But Maximum Compensation is limit to 75/R %.
Hence 75/80=0.9375%.
1 in 20 = 5 %.
Compensation = 5-0.9375= 4.0625 % ~ 4%.
Hence Compensated gradient on the curve is 4% = 1 in 25.
(4)
Priya said:
8 years ago
Good @Michael.
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