IRC STUDY SESSION 7| QUESTIONS WITH
COMPLETE SOLUTIONS
What is the maximum center-to-center stud spacing permitted for a 2 inch by 6 inch, 8 foot high
wood stud bearing wall supporting two floors, roof and ceiling? Correct Answer: 16 incesh
In wood wall framing where top and bottom plates are attached to the studs, which of the
following fastening methods is acceptable? Correct Answer: three 10d box, end nailed
The minimum offset for end joints in a double top plate shall be ____________ Correct Answer:
24 inches
A single top plate is permitted in a wood stud bearing wall only where the raters or joists are
centered over the studs with a maximum tolerance of _______________ Correct Answer: 1 inch
Where the wall sheathing is used to resist wind pressures, what is the maximum stud spacing
permitted for 3/8 -inch wood structural panel wall sheathing with a span rating of 24/0. Correct
Answer: 16 inches o.c
In a non-bearing partition, a wood stud may be notches a maximum of Correct Answer: 40
percent of the stud width
A bored hole shall be located a minimum of ____________- from the edge of a wood stud.
Correct Answer: 5/8 inch
In a nonbearing interior partition, what is the maximum diameter permitted for a bored hole in a
wood stud? Correct Answer: 60 percent of the stud width
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? Correct Answer: 8 feet
Which fo the following materials is not specifically identified by the IRC as a fire-blocking
material? Correct Answer: 15/32-inch wood structural panel with joints backed
Where unfaced fiberglass batt insulation is used a fireblocking material in the wall cavity of a
wood stud wall system, the insulation shall be installed with a minimum vertical height of
__________________. Correct Answer: 16 inches
A foundation cripple wall shall be considered an additional story for stud sizing requirements
where the wall height exceeds ______________ in height. Correct Answer: 48 inches
The distance between adjacent edges of braced wall panels along a braced wall line must be a
maximum of __________ feet. Correct Answer: 20
COMPLETE SOLUTIONS
What is the maximum center-to-center stud spacing permitted for a 2 inch by 6 inch, 8 foot high
wood stud bearing wall supporting two floors, roof and ceiling? Correct Answer: 16 incesh
In wood wall framing where top and bottom plates are attached to the studs, which of the
following fastening methods is acceptable? Correct Answer: three 10d box, end nailed
The minimum offset for end joints in a double top plate shall be ____________ Correct Answer:
24 inches
A single top plate is permitted in a wood stud bearing wall only where the raters or joists are
centered over the studs with a maximum tolerance of _______________ Correct Answer: 1 inch
Where the wall sheathing is used to resist wind pressures, what is the maximum stud spacing
permitted for 3/8 -inch wood structural panel wall sheathing with a span rating of 24/0. Correct
Answer: 16 inches o.c
In a non-bearing partition, a wood stud may be notches a maximum of Correct Answer: 40
percent of the stud width
A bored hole shall be located a minimum of ____________- from the edge of a wood stud.
Correct Answer: 5/8 inch
In a nonbearing interior partition, what is the maximum diameter permitted for a bored hole in a
wood stud? Correct Answer: 60 percent of the stud width
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? Correct Answer: 8 feet
Which fo the following materials is not specifically identified by the IRC as a fire-blocking
material? Correct Answer: 15/32-inch wood structural panel with joints backed
Where unfaced fiberglass batt insulation is used a fireblocking material in the wall cavity of a
wood stud wall system, the insulation shall be installed with a minimum vertical height of
__________________. Correct Answer: 16 inches
A foundation cripple wall shall be considered an additional story for stud sizing requirements
where the wall height exceeds ______________ in height. Correct Answer: 48 inches
The distance between adjacent edges of braced wall panels along a braced wall line must be a
maximum of __________ feet. Correct Answer: 20
