Stair code

Question 1

Minimum headroom must be maintained

Answer 1

80”

Question 2

A sphere of ___ should not fit through the space between the balusters

Answer 2

4”

Question 3

A sphere of ___ should not fit through the space between the bottom run of the balustrade and the tread

Answer 3

6”

Question 4

The variation from largest to smallest tread or riser must not exceed

Answer 4

Pg 55 R311.7.5

3/8”

Question 5

Minimum stair tread depth shall not be less than

Answer 5

Pg 55 R311.7.5.2

9”

Question 6

Maximum stair riser height shall not exceed

Answer 6

Pg 55 R311.7.5.1

8 1/4”

Question 7

Handrails shall not project more than _____ on either side of the stairway.

Answer 7

Pg 54 R311.7

4 1/2”

Question 8

The width of a stairway, with a handrail on one side, shall not be less than _____ inches; with a handrail on both sides, shall not be less than _____ inches

Answer 8

Pg 54 R311.7

31 1/2”
27”

Question 9

Handrails shall be provided on at least one side of each continuous run of treads with _____ or more risers

Answer 9

Pg 55 R311.7.8

4

Question 10

Handrails adjacent to the wall shall have a space of not less than ____ between the handrail and the wall.

Answer 10

Pg 55 R311.7.8

1 1/2”

Question 11

Handrails with a circular cross section shall have a diameter between ____ and ____

Answer 11

Pg 56 R311.7

1 1/4” and 2”