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The ___________ stairs are useful where the space available is limited and where the traffic is less.

(a) Straight

(b) Turning

(c) Spiral

(d) Geometrical

I had been asked this question in an interview.

My question is based upon Types of Stairs in portion Arches, Lintels, Stairs and Formwork of Construction & Building Materials

1 Answer

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Best answer
Correct option is (c) Spiral

The best explanation: The core of spiral stair maybe solid and hollow and the stair may be provided with cut or closed strings. The height of the floor and riser respectively 3.68 M and 160 mm.

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