Civil Engineering MCQAE Level Civil Engineering
Porosity and specific gravity of solid of a sand below a masonry dam are 40% and 2.67 respectively. The maximum permissible upward gradient with factor of safety 5 is
Soil MechanicsSoil MechanicsMEDIUM
Choose the correct answer
A
0.25
B
0.5
C
1.0
D
4.0
Correct Answer
A. 0.25
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
e = n/(1-n) = 0.667; critical gradient = (2.67-1)/(1+0.667) ≈ 1.0; allowable = 1/5 ≈ 0.2, nearest 0.25
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Concept shortcut
IS/IRC reference
Common trap
Practice more Civil Engineering questions
This MCQ belongs to WBPSC AE Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.