# The ratio of effective height to thickness of masonry walls should not be more than:

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The ratio of effective height to thickness of masonry walls should not be more than:
1. 50
2. 40
3. 30
4. 20
5. 25

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Correct Answer - Option 3 : 30

Slenderness ratio of the wall is defined as the ratio of its effective length or effective height (minimum of these two) to the effective thickness.

As per IS 456:2000, section 32.2.3,

The ratio of effective height to thickness. Hwe/t (slenderness ratio) of masonry wall shall not exceed 30.