Fire Protection: IRC R302

Question 1

The garage shall be separated Not less than ____ gypsum board or equivalent applied to the garage side.

a. 2’’
b. 1 1/2’’
c. 1’’
d. 1/2’’

Answer 1

d. 1/2’’

[IRC TABLE R302.6]

Question 2

Enclosed accessible space under stairs shall have walls, under-stair surface and any soffits protected on the enclosed side with ______ gypsum board.

a. 2’’
b. 1 1/2’’
c. 1’’
d. 1/2’’

Answer 2

d. 1/2’’

[IRC R302.7]

Question 3

Ducts in the garage and ducts penetrating the walls or ceilings separating the dwelling from the garage shall be constructed of a minimum _____ sheet steel or other approved material and shall not have openings into the garage.

a. No. 24 gage
b. No. 25 gage
c. No. 26 gage
d. No. 27 gage

Answer 3

c. No. 26 gage

[IRC R302.5.2]

Question 4

In combustible construction, fireblocking shall be provided to cut off both vertical and horizontal concealed draft openings and to form an effective fire barrier between stories, and between a top story and the ______ space.

a. attic
b. wall
c, floor
d. roof

Answer 4

d. roof

[IRC R302.11]

Question 5

Fireblocking shall be provided in wood-framed construction in concealed spaces of stud walls and partitions, including furred spaces and parallel rows of studs or staggered studs, vertically at the ceiling and floor levels horizontally at intervals not exceeding ______.

a. 10’
b. 9’
c. 8’
d. 7’

Answer 5

a. 10’

[IRC R302.11 (1)(1.1)]