IRC TEST 2025 | ALL QUESTIONS AND
CORRECT ANSWERS | ALREADY
GRADED A+ | VERIFIED ANSWERS |
LATEST EXAM (JUST RELEASED)
_______________ is the term used in the IRC to describe the individual in charge of the department of
building safety.
A. Building official
B. Code official
C. Code administrator
D. Chief building inspector - ANSWER: A
. In a steel-framed roof system, eave overhangs shall not exceed _______________ in horizontal projection. a.
12 inches
b. 18 inches
c. 24 inches
d. 30 inches - ANSWER: C
15/32-inch wood structural panels attached to wall framing with 15 gage staples shall be fastened at a
maximum of _______________ inches at the panel edges and _______________ inches at the intermediate
supports.
a. 3, 6
b. 4, 8
c. 5, 10
d. 6, 12 - ANSWER: B
A 15-inch-deep box header in an exterior wall is constructed with wood structural panels on both sides. What
is the maximum allowable header span for a condition where the header supports a clear-span roof truss with
a span of 26 feet?
,a. 4 feet
b. 5 feet
c. 7 feet
d. 8 feet - ANSWER: D
A 4-square-foot glazed panel installed in an entry door shall have a minimum glazing category classification of
CPSC 16 CFR 1201 Category _______________.
a. I
b. II
c. III
d. IV - ANSWER: A
A 6-square-foot skylight of laminated glass shall have a minimum _______________ polyvinyl butyral
interlayer where located 14 feet above the walking surface.
a. 0.015-inch
b. 0.024-inch
c. 0.030-inch
d. 0.044-inch - ANSWER: C
A 9-foot-high plain masonry foundation wall is subjected to 7 feet of unbalanced backfill. If the soil class is GC,
what is the minimum required nominal wall thickness?
a. 8 inches solid
b. 10 inches grout
c. 12 inches solid
d. 12 inches grout - ANSWER: B
A base course is not required for the prepared subgrade for a concrete floor slab below grade where the soil is
classified as _______________.
a. GM
b. SC
c. CH
,d. OH - ANSWER: A
A bored hole shall be located a minimum of _______________ from the edge of a wood stud.
a. 3 /8 inch
b. 1 /2 inch
c. 5 /8 inch
d. 1 inch - ANSWER: C
A dwelling is located in an area having a 115 mph wind speed and Exposure B. The ground snow load is 20 psf.
What is the maximum allowable rafter span for 800S162-43 50 ksi steel rafters installed at 24 inches on center
with a roof slope of 12:12?
a. 7 feet, 11 inches
b. 9 feet, 9 inches
c. 10 feet, 10 inches
d. 13 feet, 4 inches - ANSWER: C
A dwelling located in an area with an air freezing index of 3,500 is constructed with a frost-protected shallow
foundation. What is the minimum required horizontal insulation R-value at the corners of the foundation?
a. 8.0
b. 8.6
c. 11.2
d. 13.1 - ANSWER: C
A fire-resistance rating is not required for exterior walls of nonsprinklered dwellings having a minimum fire
separation distance of _______________.
a. 3 feet
b. 4 feet
c. 5 feet
d. 10 feet - ANSWER: C
A foundation cripple wall shall be considered an additional story for stud sizing requirements where the wall
height exceeds _______________in height.
, a. 14 inches
b. 30 inches
c. 36 inches
d. 48 inches - ANSWER: D
A hole bored through a floor joist shall have a maximum diameter of _______________.
a. 2 inches
b. 1 /6 the depth of the joist
c. 1 /4 the depth of the joist
d. 1 /3 the depth of the joist - ANSWER: D
A minimum clearance of _______________ inches shall be provided in front of the opening to a shower.
a. 24
b. 30
c. 32
d. 36 - ANSWER: A
A minimum clearance of _______________ shall be provided in front of a water closet.
a. 21 inches
b. 24 inches
c. 30 inches
d. 32 inches - ANSWER: A
A minimum design live load of _______________ shall be used for the determination of the maximum
allowable floor joist spans in attics that are accessed by a fixed stairway.
a. 10 psf
b. 20 psf
c. 30 psf
d. 40 psf - ANSWER: C
CORRECT ANSWERS | ALREADY
GRADED A+ | VERIFIED ANSWERS |
LATEST EXAM (JUST RELEASED)
_______________ is the term used in the IRC to describe the individual in charge of the department of
building safety.
A. Building official
B. Code official
C. Code administrator
D. Chief building inspector - ANSWER: A
. In a steel-framed roof system, eave overhangs shall not exceed _______________ in horizontal projection. a.
12 inches
b. 18 inches
c. 24 inches
d. 30 inches - ANSWER: C
15/32-inch wood structural panels attached to wall framing with 15 gage staples shall be fastened at a
maximum of _______________ inches at the panel edges and _______________ inches at the intermediate
supports.
a. 3, 6
b. 4, 8
c. 5, 10
d. 6, 12 - ANSWER: B
A 15-inch-deep box header in an exterior wall is constructed with wood structural panels on both sides. What
is the maximum allowable header span for a condition where the header supports a clear-span roof truss with
a span of 26 feet?
,a. 4 feet
b. 5 feet
c. 7 feet
d. 8 feet - ANSWER: D
A 4-square-foot glazed panel installed in an entry door shall have a minimum glazing category classification of
CPSC 16 CFR 1201 Category _______________.
a. I
b. II
c. III
d. IV - ANSWER: A
A 6-square-foot skylight of laminated glass shall have a minimum _______________ polyvinyl butyral
interlayer where located 14 feet above the walking surface.
a. 0.015-inch
b. 0.024-inch
c. 0.030-inch
d. 0.044-inch - ANSWER: C
A 9-foot-high plain masonry foundation wall is subjected to 7 feet of unbalanced backfill. If the soil class is GC,
what is the minimum required nominal wall thickness?
a. 8 inches solid
b. 10 inches grout
c. 12 inches solid
d. 12 inches grout - ANSWER: B
A base course is not required for the prepared subgrade for a concrete floor slab below grade where the soil is
classified as _______________.
a. GM
b. SC
c. CH
,d. OH - ANSWER: A
A bored hole shall be located a minimum of _______________ from the edge of a wood stud.
a. 3 /8 inch
b. 1 /2 inch
c. 5 /8 inch
d. 1 inch - ANSWER: C
A dwelling is located in an area having a 115 mph wind speed and Exposure B. The ground snow load is 20 psf.
What is the maximum allowable rafter span for 800S162-43 50 ksi steel rafters installed at 24 inches on center
with a roof slope of 12:12?
a. 7 feet, 11 inches
b. 9 feet, 9 inches
c. 10 feet, 10 inches
d. 13 feet, 4 inches - ANSWER: C
A dwelling located in an area with an air freezing index of 3,500 is constructed with a frost-protected shallow
foundation. What is the minimum required horizontal insulation R-value at the corners of the foundation?
a. 8.0
b. 8.6
c. 11.2
d. 13.1 - ANSWER: C
A fire-resistance rating is not required for exterior walls of nonsprinklered dwellings having a minimum fire
separation distance of _______________.
a. 3 feet
b. 4 feet
c. 5 feet
d. 10 feet - ANSWER: C
A foundation cripple wall shall be considered an additional story for stud sizing requirements where the wall
height exceeds _______________in height.
, a. 14 inches
b. 30 inches
c. 36 inches
d. 48 inches - ANSWER: D
A hole bored through a floor joist shall have a maximum diameter of _______________.
a. 2 inches
b. 1 /6 the depth of the joist
c. 1 /4 the depth of the joist
d. 1 /3 the depth of the joist - ANSWER: D
A minimum clearance of _______________ inches shall be provided in front of the opening to a shower.
a. 24
b. 30
c. 32
d. 36 - ANSWER: A
A minimum clearance of _______________ shall be provided in front of a water closet.
a. 21 inches
b. 24 inches
c. 30 inches
d. 32 inches - ANSWER: A
A minimum design live load of _______________ shall be used for the determination of the maximum
allowable floor joist spans in attics that are accessed by a fixed stairway.
a. 10 psf
b. 20 psf
c. 30 psf
d. 40 psf - ANSWER: C
