2025 IRC EXAM PART 4 QUESTIONS
WITH CORRECT ANSWERS 2025
The ends of each joist, beam, or girder shall have not less than inches of bearing on w
ood or metal and not less than inches of bearing on masonry or concrete. -
correct answer-1 1/2
3
Section R502.6 Bearing
Notches in solid lumber joists, rafters, and beams shall not exceed of the depth of the
member, shall not be longer than of the depth of the member and shall not be locate
d in the middle of the span.
Notches at the ends of the member shall not exceed the depth of the member. -
correct answer-1/6
1/3
1/3
1/4
Section R502.8.1 Sawn lumber.
Bores in solid lumber joists, rafters, and beams shall not exceed of the depth of the m
ember.
Bored holes shall maintain at least inches from top and bottom of the joist, and at least
inches from another hole or notch. - correct answer-1/3
2"
2"
R502.8 Cutting, Notching, and Drilling
The tension side of solid lumber joist members inches or greater in nominal thickness
shall not be notched except at the ends of the members. - correct answer-4
, Section R502.8.1 Sawn lumber.
Where the header joist span does not exceed feet, the header joist shall be a single m
ember the same size as the floor joist. - correct answer-4
(where the header joist span exceeds 4 feet, the trimmer joists and header joist shall be doubled)
R502.10 Framing of openings.
The provisions of Section R505 Cold-formed Steel Floor Framing shall control the construction of cold-
formed steel floor framing for buildings not greater than feet in length perpendicular t
o the joist span. - correct answer-60
Section R505.1.1 Applicability limits.
Flanges and lips of load-bearing cold-
formed steel floor framing members shall not be cut or . - correct answer-notched
Section R505.3.5 Cutting and notching.
In cold-formed steel framing, floor cantilevers for the top floor of a two- or three-
story building or the first floor of a one-story building shall not exceed inches. -
correct answer-24
Section R505.3.6 Floor cantilevers.
Concrete slab-on-ground floors shall be a minimum inches thick. - correct answer-
3 1/2
Section R506.1 General.
WITH CORRECT ANSWERS 2025
The ends of each joist, beam, or girder shall have not less than inches of bearing on w
ood or metal and not less than inches of bearing on masonry or concrete. -
correct answer-1 1/2
3
Section R502.6 Bearing
Notches in solid lumber joists, rafters, and beams shall not exceed of the depth of the
member, shall not be longer than of the depth of the member and shall not be locate
d in the middle of the span.
Notches at the ends of the member shall not exceed the depth of the member. -
correct answer-1/6
1/3
1/3
1/4
Section R502.8.1 Sawn lumber.
Bores in solid lumber joists, rafters, and beams shall not exceed of the depth of the m
ember.
Bored holes shall maintain at least inches from top and bottom of the joist, and at least
inches from another hole or notch. - correct answer-1/3
2"
2"
R502.8 Cutting, Notching, and Drilling
The tension side of solid lumber joist members inches or greater in nominal thickness
shall not be notched except at the ends of the members. - correct answer-4
, Section R502.8.1 Sawn lumber.
Where the header joist span does not exceed feet, the header joist shall be a single m
ember the same size as the floor joist. - correct answer-4
(where the header joist span exceeds 4 feet, the trimmer joists and header joist shall be doubled)
R502.10 Framing of openings.
The provisions of Section R505 Cold-formed Steel Floor Framing shall control the construction of cold-
formed steel floor framing for buildings not greater than feet in length perpendicular t
o the joist span. - correct answer-60
Section R505.1.1 Applicability limits.
Flanges and lips of load-bearing cold-
formed steel floor framing members shall not be cut or . - correct answer-notched
Section R505.3.5 Cutting and notching.
In cold-formed steel framing, floor cantilevers for the top floor of a two- or three-
story building or the first floor of a one-story building shall not exceed inches. -
correct answer-24
Section R505.3.6 Floor cantilevers.
Concrete slab-on-ground floors shall be a minimum inches thick. - correct answer-
3 1/2
Section R506.1 General.
