The 'punching shear perimeter' for a column footing (IS 456) is taken at:
Choose the correct answer
At the column face (zero distance)
At d/2 from the column periphery on all sides — perimeter = 4(a+d) for square column
At L/4 from the column
At d from column face (same as one-way shear)
Correct Answer
B. At d/2 from the column periphery on all sides — perimeter = 4(a+d) for square column
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
IS 456 Cl. 31.6: punching shear critical section for flat slab/footing = perimeter at d/2 from column periphery on all sides. For a square column of size a×a: critical perimeter = 4(a+d). Punching shear stress = Vu / (perimeter × d). Must be ≤ 0.25√fck (IS 456). For slabs also at d/2 from column periphery. Compare with one-way shear (critical at d from column face for footing).
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Practice more Civil Engineering questions
This MCQ belongs to JE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.