A stair must rise 126 in. floor-to-floor. Using a maximum riser height of 7 in., what riser count is required?
Correct Answer
C) 18 risers
Divide total rise by the maximum riser: 126/7 = 18, so 18 risers satisfy the 7 in. maximum. Other choices exceed the maximum riser height or add unnecessary risers.
Why This Is the Correct Answer
Divide total rise by the maximum riser: 126/7 = 18, so 18 risers satisfy the 7 in. maximum. Other choices exceed the maximum riser height or add unnecessary risers.
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