Staircase Carpentry Math

A staircase has a total rise of 144 inches and 12 steps. What is the rise height of each step?

• 10 inches

• 12 inches

• 14 inches

• 16 inches

If the total rise of a staircase is 96 inches and the run is 120 inches, what is the length of the hypotenuse using the Pythagorean theorem?

• 144 inches

• 150 inches

• 154 inches

• 160 inches

If the total rise of a staircase is 72 inches and there are 9 steps, what is the total rise?

• 72 inches

• 81 inches

• 90 inches

• 99 inches

A staircase has a total run of 120 inches and 10 treads. What is the depth of each tread?

• 10 inches

• 12 inches

• 14 inches

• 16 inches

Tread width (unit run) is measured from the

• face of one riser to the nosing of the next riser

• face of one riser to the face of the next riser

• top of one tread to the bottom of the next riser

• subfloor to the top tread

The maximum rise for a set of stairs without a landing is typically.

• a. 9 feet

• b. 10 feet

• c. 12 feet

• d. 15 feet

What is the requirement for head room on stairways?

• 5' 8"

• 6' 8"

• 7' 8"

• 8' 8"