CAD - Chapter 24 Stairs

​ (a)   are designed to keep people from falling over the edge of balconies or tops of staircases.

• Guardrails
• Handrails
• Fences

Circular stairs have what?

• escalators
• elevators
• ship stair steps

• trapezoidal steps that rise along an irregular curve or arc

Circular stairs have ___-shaped steps.

• square
• round
• triangular
• rectangular
• trapezoid

Double-L stairs...

• Draw a zigzag staircase
• Draw a spiral staircase
• Have 2 90° turns and 2 landings along the flight

• Draw a single straight stair

Enclosed stairs are also known as ___ stairs. (Mark all that apply)

• spiral
• angled
• housed

• curved
• closed or box

House stringers are... (make all that apply)

• types of insulation used in construction
• constructed from finished lumber

• tools used for gardening
• decorative elements on the exterior of a house
• purchased precut or preassembled; 1 x 12 or 2 x 12 lumber

In a set of stairs requiring more than 2 stringers, where should the third stringer be placed?

• At the midpoint between the outside stringer and under the treads and risers.

• At the end of the staircase
• Directly above the first stringer
• At the bottom of the staircase

In a set of winder stairs, how is the width of the pie-shaped steps determined?

• The width of the pie-shaped steps at the midpoint should be the same width as the regular steps.

• Based on the number of windows
• Randomly chosen
• Building code regulations

​ (a)   is the distance from the face of one riser to the face of the next.

• Run
• Jump
• Skip
• Rise

List the 4 rules to follow when determining the rise-run ratio. (Mark all that apply)

• The slop of the stairs should be between 30-35 degrees

• The sum of the 2 risers and 1 tread should equal 25'

• The product of the riser height multiplied by the tread should equal approx. 75'

• The sum of one riser and one tread should equal 17" to 18"