In stairs, the vertical portion of a step providing a support to the tread, is known as
A)riser
B)flier
C)soffit
D)pitch or slope

Name: In stairs, the vertical portion of a step providing a support to the tread, is known as A)riser B)flier C)soffit D)pitch or slope
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Quizplus · Accepted Answer

The vertical portion of a step in stairs that provides support to the tread is known as the riser. It is the part that gives height to each step, making it possible to ascend or descend between different levels.

In Stairs, the Vertical Portion of a Step Providing a Support