GATE CE 2015 Set 1 — Question 16

MCQ+1 / -0.33EasyLimit State MethodRC Fundamentals & BeamsStructural EngineeringSingly Reinforced Beams

Structural Engineering → RC Fundamentals & Beams → Limit State Method

Last updated 5 September 2026

Question

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Correct answer (B) The variation of strain is linear and that of stress is non-linear Solution In the limit state method of design for reinforced concrete, one of the fundamental assumptions (as per IS 456:2000, Clause 38.1) is that plane sections normal to the axis remain plane after bending. This implies that the strain distribution is linear across the depth of the section. However, the stress distribution in the concrete is non-linear (typically assumed as a parabolic-rectangular block) at the limit state of collapse in flexure to reflect the actual material behavior at high strains. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (B) The variation of strain is linear and that of stress is non-linear Solution In the limit state method of design for reinforced concrete, one of the fundamental assumptions (as per IS 456:2000, Clause 38.1) is that plane sections normal to the axis remain plane after bending. This implies that the strain distribution is linear across the depth of the section. However, the stress distribution in the concrete is non-linear (typically assumed as a parabolic-rectangular block) at the limit state of collapse in flexure to reflect the actual material behavior at high strains.

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