Stairs Review

A center cutout strigner may be required when the width of the stairway exceeds?

• 30'
• 30"
• 36"
• 36'

The size of the stock used for stringers is determined by what or whom?

• notes on the drawing
• project manager
• site superintendent
• homeowner

For optimum safety and comfort it is important that the dimensions of the stair treads and risers be ______.

• uniform
• glued
• carpeted
• equal

On the open side of commercial stairways or mezzanines, a guard rail that is ____ high is typically required.

• 42'
• 42"
• 36"
• 36'

The IBC required ___ of minimum headroom.

• 88"
• 6'8"
• 80'
• 44"

Which is the simplest type of stairway?

• straight run
• L-shaped
• U-shaped
• geometrical

Where header joist span exceeds ___ , the trimmer joists and the header joists must be doubled.

• 3'
• 3"
• 4"
• 4'

Unit run is also referred to as what?

• riser height
• tread width
• slope
• total rise

Slope is _______________

• the ratio of the rise and run
• the vertical distance of a stairway
• the horizontal length of a stairway
• the distance from the face of one riser to the face of the next riser

What is the preferred slope of a stairway?

• between 30 & 35 degrees
• between 30 & 40 degrees
• between 20 & 35 degrees
• 38 degrees