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__________ do not radiate from a common centre.

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__________ do not radiate from a common centre.

(a) Common step

(b) Dancing steps

(c) Tread

(d) Waist

The question was asked during an interview.

My doubt stems from Stairs Technical Terms topic in section Arches, Lintels, Stairs and Formwork of Construction & Building Materials

1 Answer

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Correct choice is (b) Dancing steps

Explanation: Whereas, the thickness of the structural slab in case of an RCC Stair is known as a waist. And, the horizontal upper portion of the stair is known as a tread.

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