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Q: Dog-legged stairs are
  • A. Straight stair
  • B. Quarter turn stair
  • C. Half turn stair
  • D. Three fourth turn stair
Correct Answer: Option C - The half turn staircase is a variant of the quarter turn staircase. It consist of two straight flights with two 90º turns. The steps and the person on half turn staircase turns 180º from base to top ex–Dog legged or open newel type.
C. The half turn staircase is a variant of the quarter turn staircase. It consist of two straight flights with two 90º turns. The steps and the person on half turn staircase turns 180º from base to top ex–Dog legged or open newel type.

Explanations:

The half turn staircase is a variant of the quarter turn staircase. It consist of two straight flights with two 90º turns. The steps and the person on half turn staircase turns 180º from base to top ex–Dog legged or open newel type.