Civil Engineering MCQAE Level Civil Engineering
The minimum compaction standard required for the top 500 mm of subgrade as per IRC 36 is:
Transportation EngineeringSub-grade PreparationMEDIUM
Choose the correct answer
A
90% of Standard Proctor MDD
B
97% of Standard Proctor MDD
C
100% of Modified Proctor MDD
D
95% of Standard Proctor MDD
Correct Answer
D. 95% of Standard Proctor MDD
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
IRC 36 (BRO manual) and MORT&H 5th revision: compaction of embankment and subgrade. Top 500 mm of subgrade: minimum 97% of MDD by Standard Proctor test. General embankment: minimum 95%. In-situ subgrade preparation: 95% MDD.
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 AE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.