Question

A Stair turning through one right angle is known as a _______ stair.

(a) Quarter- turn

(b) Half-turn

(c) Dog-legged

(d) Open navel

This question was addressed to me in class test.

This interesting question is from Types of Stairs topic in division Arches, Lintels, Stairs and Formwork of Construction & Building Materials

Answer 1

The correct choice is (a) Quarter- turn

To explain: Quarter Turn steps are commonly used in public buildings near their entrance hall. The stairs has a wider flight at the bottom which bifurcates into two narrower flights at the landing, one turning to the left and other to the right.