INTERNATIONAL RESIDENTIAL CODE
EXAM QUESTIONS WITH COMPLETE
ANSWERS
What is the slope allowance for the bottom of a footing? - ANSWER-1 in 10 (10%)
How far most foundation gravel extend above the footing drain? - ANSWER-6"
What is the spacing in inches of veneer ties? - ANSWER-not more than 3' feet on
center, and placed within 12" of a wall opening
What is the minimum penetration of a drywall screw into wood? - ANSWER-5/8"
What is the minimum width of a stairway? - ANSWER-36"
What is the stair riser height and tread depth? - ANSWER-Risers shall not be higher
than 7 3/4"
Treads shall not be less than 10"
(USBC amended this to 8 1/4" X 9")
What size window is required in a bathroom if there is no mechanical ventilation? -
ANSWER-Not less than 3 sq. ft.
(half of which must be openable)
What is the minimum width of a hallway? - ANSWER-3'
What are the R Value insulation requirements for the ceiling, wall, and floor? -
ANSWER-Ceiling = 49
Wall = 20
Floor = 19
The under floor space vents must be covered with material with a least dimension of? -
ANSWER-shall not exceed a 1/4"
What is the maximum slump of concrete placed in removable forms? - ANSWER-Shall
not exceed 6"
The end joints of double top plates must be offset at least __________? - ANSWER-24"
What is the required clearance of wood siding from the ground before it is required to be
pressure treated? - ANSWER-6"
, What is required to support brick veneer above openings in exterior walls? - ANSWER-
Lintels
What is the minimum stroke width of site address numbers? - ANSWER-1/2" width (4"
high)
What is the thickness of flashing? - ANSWER-Minimum nominal thickness of 0.0019-
inch
What is the required width of a footing supporting a 30" fireplace? - ANSWER-42" (6"
shelf all around)
What is the minimum unobstructed headroom in an attic above the access opening? -
ANSWER-30"
Removal of roof covering is required prior to installation of new when there are
__________ or more existing applications. - ANSWER-2 or more
If there is a leak where the porch roof meets the house, what component has not been
installed correctly? - ANSWER-Flashing
What is the side spacing in inches between wood shakes? - ANSWER-3/8" to 1/2"
What is the number of joists used to support parallel bearing partitions? - ANSWER-
Double joists
What size screw is required to reinforce a non-conforming web hole in a steel floor joist?
- ANSWER-# 8 screws
What is the live load of a guard rail infill component? - ANSWER-50 PSI
Glazing is considered to be in a hazardous location if it is adjacent to the landing at the
bottom of a stair where the glazing is less than 36 inches above the landing and within
__________ inches horizontally of the bottom of the tread? - ANSWER-60"
What is the required height of a guard on a porch? - ANSWER-36"
Handrails adjacent to a wall shall have a space of not less than _________ inches
between the wall and the handrail? - ANSWER-1 1/2"
Compressible soil shall not be used as _________ __________. - ANSWER-Fill dirt
What is the minimum thickness of spread footing? - ANSWER-6"
What is the minimum specified compressive strength in psi of concrete in a basement
wall exposed to weather? - ANSWER-3000 psi
EXAM QUESTIONS WITH COMPLETE
ANSWERS
What is the slope allowance for the bottom of a footing? - ANSWER-1 in 10 (10%)
How far most foundation gravel extend above the footing drain? - ANSWER-6"
What is the spacing in inches of veneer ties? - ANSWER-not more than 3' feet on
center, and placed within 12" of a wall opening
What is the minimum penetration of a drywall screw into wood? - ANSWER-5/8"
What is the minimum width of a stairway? - ANSWER-36"
What is the stair riser height and tread depth? - ANSWER-Risers shall not be higher
than 7 3/4"
Treads shall not be less than 10"
(USBC amended this to 8 1/4" X 9")
What size window is required in a bathroom if there is no mechanical ventilation? -
ANSWER-Not less than 3 sq. ft.
(half of which must be openable)
What is the minimum width of a hallway? - ANSWER-3'
What are the R Value insulation requirements for the ceiling, wall, and floor? -
ANSWER-Ceiling = 49
Wall = 20
Floor = 19
The under floor space vents must be covered with material with a least dimension of? -
ANSWER-shall not exceed a 1/4"
What is the maximum slump of concrete placed in removable forms? - ANSWER-Shall
not exceed 6"
The end joints of double top plates must be offset at least __________? - ANSWER-24"
What is the required clearance of wood siding from the ground before it is required to be
pressure treated? - ANSWER-6"
, What is required to support brick veneer above openings in exterior walls? - ANSWER-
Lintels
What is the minimum stroke width of site address numbers? - ANSWER-1/2" width (4"
high)
What is the thickness of flashing? - ANSWER-Minimum nominal thickness of 0.0019-
inch
What is the required width of a footing supporting a 30" fireplace? - ANSWER-42" (6"
shelf all around)
What is the minimum unobstructed headroom in an attic above the access opening? -
ANSWER-30"
Removal of roof covering is required prior to installation of new when there are
__________ or more existing applications. - ANSWER-2 or more
If there is a leak where the porch roof meets the house, what component has not been
installed correctly? - ANSWER-Flashing
What is the side spacing in inches between wood shakes? - ANSWER-3/8" to 1/2"
What is the number of joists used to support parallel bearing partitions? - ANSWER-
Double joists
What size screw is required to reinforce a non-conforming web hole in a steel floor joist?
- ANSWER-# 8 screws
What is the live load of a guard rail infill component? - ANSWER-50 PSI
Glazing is considered to be in a hazardous location if it is adjacent to the landing at the
bottom of a stair where the glazing is less than 36 inches above the landing and within
__________ inches horizontally of the bottom of the tread? - ANSWER-60"
What is the required height of a guard on a porch? - ANSWER-36"
Handrails adjacent to a wall shall have a space of not less than _________ inches
between the wall and the handrail? - ANSWER-1 1/2"
Compressible soil shall not be used as _________ __________. - ANSWER-Fill dirt
What is the minimum thickness of spread footing? - ANSWER-6"
What is the minimum specified compressive strength in psi of concrete in a basement
wall exposed to weather? - ANSWER-3000 psi
