Question
Download Solution PDFIf the ruling gradient is 1 in 20 and there is also a horizontal curve of radius 76 m, then the compensated grade should be:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Grade Compensation:
- Grade Compensation is (30+R)/R % where R is the Horizontal curve.
- But Maximum Compensation is limited to 75/R %.
Calculation:
Since 1 in 20 is higher than 4% So as per IRC, Compensation is required.
Hence (30+76)/76 = 1.39 %.
Ruling gradient = 1 in 20 = 5 %.
Grade Compensation = 1.39 %
Compensated gradient
= Ruling Gradient− Grade Compensation
= 5% − 1.39 % = 3.6%
Hence Compensated gradient on the curve is 3.6%. which is < 4 %, so compensated gradient will be restricted to 4 %
Last updated on Jun 4, 2025
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