Question

Stairway must have uniform riser height and tread depth; variations in riser height or tread depth shall not be over _______ inch in any stairway system.

Answer 1

Answer:

$\frac{3}{8} inches$

Explanation:

the variations in riser height or tread depth should not be grater than $\frac{3}{8} inches$ that is equal to 9.5 mm but the maximum riser height should be the  $\frac{81}{4} inch$  but variation in riser height should not exceed to $\frac{3}{8} inches$. The minimum riser height should be 7 inches which is equal to the 178 mm