ICC Residential Plans Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which code publication is primarily used by an ICC Residential Plans
Examiner when reviewing one- and two-family dwelling construction
documents?
A. International Building Code
B. International Existing Building Code
C. International Residential Code
D. International Fire Code
Rationale: The International Residential Code (IRC) governs the
construction of detached one- and two-family dwellings and townhouses
not more than three stories above grade plane. Residential plans
examiners rely heavily on the IRC for code compliance review.
, 2. What is the minimum uniformly distributed live load required for
habitable rooms in residential structures?
A. 20 psf
B. 30 psf
C. 40 psf
D. 60 psf
Rationale: Habitable rooms in residential occupancies are generally
required to support a minimum live load of 40 pounds per square foot
according to IRC structural loading provisions.
3. A smoke alarm is required in which of the following locations?
A. Kitchens only
B. Bathrooms only
C. Garages only
D. Outside each separate sleeping area in the immediate vicinity of
bedrooms
Rationale: The IRC requires smoke alarms outside each sleeping area,
inside each bedroom, and on every level of the dwelling to provide
adequate occupant notification during fire emergencies.
4. What is the minimum required ceiling height for habitable spaces in
residential buildings?
,A. 6 feet 4 inches
B. 6 feet 6 inches
C. 7 feet
D. 7 feet 6 inches
Rationale: Habitable spaces, hallways, bathrooms, and portions of
basements generally require a minimum ceiling height of 7 feet under the
IRC.
5. Which document is typically reviewed to verify footing dimensions and
reinforcement?
A. Electrical riser diagram
B. Window schedule
C. Roof framing plan
D. Foundation plan
Rationale: The foundation plan provides details regarding footing size,
reinforcement, slab thickness, and foundation wall construction necessary
for structural review.
6. What is the minimum tread depth for residential stairways?
A. 9 inches
B. 10 inches
, C. 11 inches
D. 12 inches
Rationale: Residential stair treads must have a minimum depth of 10
inches measured horizontally between vertical planes of the foremost
projection of adjacent treads.
7. Which factor most directly determines frost footing depth?
A. Wind exposure
B. Occupant load
C. Soil bearing pressure
D. Local frost line depth
Rationale: Footings must extend below the frost line to prevent frost heave
and structural movement caused by freezing soil conditions.
8. What is the minimum required width for a residential egress door?
A. 28 inches
B. 30 inches
C. 32 inches
D. 36 inches
Rationale: The IRC requires at least one egress door with a minimum clear
width of 32 inches to provide safe occupant exit.
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which code publication is primarily used by an ICC Residential Plans
Examiner when reviewing one- and two-family dwelling construction
documents?
A. International Building Code
B. International Existing Building Code
C. International Residential Code
D. International Fire Code
Rationale: The International Residential Code (IRC) governs the
construction of detached one- and two-family dwellings and townhouses
not more than three stories above grade plane. Residential plans
examiners rely heavily on the IRC for code compliance review.
, 2. What is the minimum uniformly distributed live load required for
habitable rooms in residential structures?
A. 20 psf
B. 30 psf
C. 40 psf
D. 60 psf
Rationale: Habitable rooms in residential occupancies are generally
required to support a minimum live load of 40 pounds per square foot
according to IRC structural loading provisions.
3. A smoke alarm is required in which of the following locations?
A. Kitchens only
B. Bathrooms only
C. Garages only
D. Outside each separate sleeping area in the immediate vicinity of
bedrooms
Rationale: The IRC requires smoke alarms outside each sleeping area,
inside each bedroom, and on every level of the dwelling to provide
adequate occupant notification during fire emergencies.
4. What is the minimum required ceiling height for habitable spaces in
residential buildings?
,A. 6 feet 4 inches
B. 6 feet 6 inches
C. 7 feet
D. 7 feet 6 inches
Rationale: Habitable spaces, hallways, bathrooms, and portions of
basements generally require a minimum ceiling height of 7 feet under the
IRC.
5. Which document is typically reviewed to verify footing dimensions and
reinforcement?
A. Electrical riser diagram
B. Window schedule
C. Roof framing plan
D. Foundation plan
Rationale: The foundation plan provides details regarding footing size,
reinforcement, slab thickness, and foundation wall construction necessary
for structural review.
6. What is the minimum tread depth for residential stairways?
A. 9 inches
B. 10 inches
, C. 11 inches
D. 12 inches
Rationale: Residential stair treads must have a minimum depth of 10
inches measured horizontally between vertical planes of the foremost
projection of adjacent treads.
7. Which factor most directly determines frost footing depth?
A. Wind exposure
B. Occupant load
C. Soil bearing pressure
D. Local frost line depth
Rationale: Footings must extend below the frost line to prevent frost heave
and structural movement caused by freezing soil conditions.
8. What is the minimum required width for a residential egress door?
A. 28 inches
B. 30 inches
C. 32 inches
D. 36 inches
Rationale: The IRC requires at least one egress door with a minimum clear
width of 32 inches to provide safe occupant exit.
