Question category: ARCHITECTS NEED TO KNOW
Question value: 1,600
These should be 34 to 38 above the tread nosing & have a 1 1/2 to 2 grip
Tap or click on "Show Me The Correct Answer!" and you will get the correct answer, or just try to answer without any help.
We are waiting for your answer...
handrail (when you're going up & down stairs)