Means of Egress: IRC R311

Question 1

Dwellings shall be provided with a means of egress in accordance with this section. The means of egress shall provide a continuous and unobstructed path of vertical and horizontal egress travel from all portions of the dwelling to the required egress door without requiring travel through a _______.

a. foyer
b. garage
c. patio
d. carport

Answer 1

b. garage

[IRC R311.1]

Question 2

Not less than one egress door shall be provided for each dwelling unit. The egress door shall be side-hinged, and shall provide a clear width of not less than 32’’ where measured between the face of the door & the stop, with the door open 90 deg. The clear height of the door opening shall be not less than 78’’ in height measured from the top of the threshold to the bottom of the stop. Other doors shall not be required to comply with these minimum dimensions. Egress doors shall be readily openable from inside the dwelling without the use of a key or special knowledge or effort. (TRUE/FALSE)

Answer 2

TRUE

[IRC R311.2]

Question 3

There shall be a landing or floor on each side of each exterior door. The width of each landing shall be not less than the door served. Every landing shall have a dimension of not less than ______measured in the direction of travel.

a. 36’’
b. 42’’
c. 44’’
d. 60’’

Answer 3

a. 36’’

[IRC R311.3]

Question 4

Landings or finished floors at the required egress door shall be not more than _______lower than the top of the threshold.

a. 1’’
b. 1 1/2’’
c. 1 3/4’’
d. 2’’

Answer 4

b. 1 1/2’’

[IRC R311.3.1]

Question 5

The landing or floor on the exterior side shall be not more than _______ below the top of the threshold provided the door does not swing over the landing or floor.

a. 6’’
b. 7’’
c. 7 1/2’’
d. 7 3/4’’

Answer 5

d. 7 3/4’’

[IRC R311.3.1 (Exception)]

Question 6

Doors other than the required egress door shall be provided with landings or floors not more than _______below the top of the threshold.

a. 6’’
b. 7’’
c. 7 1/2’’
d. 7 3/4’’

Answer 6

d. 7 3/4’’

[IRC R311.3.2]

Question 7

A top landing _____ required where a stairway of not more than two risers is located on the exterior side of the door, provided that the door does not swing over the stairway.

a. IS
b. IS NOT

Answer 7

b. IS NOT

[IRC R311.3.2 (Exception)]

Question 8

Storm and screen doors SHALL NOT be permitted to swing over exterior stairs and landings. (TRUE/FALSE)

Answer 8

FALSE

[IRC R311.3.3]

Question 9

Exterior landings, decks, balconies, stairs and similar facilities shall be positively anchored to the primary structure to resist both vertical and lateral forces or shall be designed to be self-supporting. Attachment shall not be accomplished by use of a minimum of a ______.

a. 2X2
b. 2X4
c. 2X6
d. 2X8

Answer 9

a. 2X2

[IRC R311.5.1]

Question 10

The width of a hallway shall be not less than ______.

a. 5’
b. 4’
c. 3’
d. ANY OF THE ABOVE

Answer 10

c. 3’

[IRC R311.6]

Question 11

Stairways shall be not less than _______ in clear width at all points above the permitted handrail height and below the required headroom height. Handrails shall not project more than ________ on either side of the stairway and the clear width of the stairway at and below the handrail height, including treads and landings, shall be not less than _______ where a handrail is installed on one side and ______where handrails are provided on both sides.

a. 36’’, 4 1/2’’, 31 1/2’’, 27’’
b. 30’’, 5’’, 32’’, 27’’
c. 36’’, 6’’, 30’’, 27’’
d. 30, 4 1/2’’, 31 1/2’’, 27’’

Answer 11

a. 36’’, 4 1/2’’, 31 1/2’’, 27’’

[IRC R311.7.1]

Question 12

The headroom in stairways shall be not less than ______ measured vertically from the sloped line adjoining the tread nosing or from the floor surface of the landing or platform on that portion of the stairway.

a. 6’5’’
b. 6’6’’
c. 6’7’’
d. 6’8’’

Answer 12

d. 6’8’’

[IRC R311.7.2]

Question 13

The walkline across winder treads shall be concentric to the curved direction of travel through the turn and located _____from the side where the winders are narrower. The ______ dimension shall be measured from the widest point of the clear stair width at the walking surface of the winder. If winders are adjacent within the flight, the point of the widest clear stair width of the adjacent winders shall be used.

a. 10’’, 10’’
b. 11’’, 11’’
c. 12’’, 12’’
d. 13’’, 13’’

Answer 13

c. 12’’, 12’’

[IRC R311.7.4]

Question 14

The riser height shall be not more than _____. The tread depth shall be not less than ______.

a. 6’’, 9’’
b. 6 1/2’’, 9 1/2’’
c. 7’’, 10’’
d. 7 3/4’’, 10’’

Answer 14

d. 7 3/4’’, 10’’
[IRC R311.7.5.1]
[IRC R311.7.5.2]

Question 15

Winder treads shall have a tread depth of not less than ______ measured between the vertical planes of the foremost projection of adjacent treads at the intersections with the walkline. Winder treads shall have a tread depth of not less than______at any point within the clear width of the stair.

a. 10’’, 6’’
b. 12’’, 7’’
c. 13’’, 8’’
d. 6’’, 10’’

Answer 15

a. 10’’, 6’’

[IRC R311.7.5.2.1]