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What is the load factor for stem in the design procedure for cantilever… — Answer & Solution | Civexa

RCC Design · Retaining Walls

Retaining Walls MCQ with answer and solution

Medium level · Asked in UPSC ESE, State AE, GPSC AE, PSU

What is the load factor for stem in the design procedure for cantilever retaining walls with safety ?

Solution

Concept

Load factor for lateral earth pressure on the stem

Formula

U = 1.6 H

Step-by-step solution

1. In the strength design of the stem of a cantilever wall the factored lateral earth pressure moment is 1.6 times the service moment.

Explanation

ACI uses a load factor of 1.6 for lateral earth pressure when designing the stem and footing for strength.

Why the other options are wrong

1.2 is the dead load factor, and 2.0 and 2.5 are not usual load factors for earth pressure.

Shortcut

Earth pressure load factor 1.6 (ACI), 1.5 (IS 456).

Common mistake

Using 1.2.

Correct answer: B) 1·6

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