INTERNATIONAL RESIDENTIAL CODE
MASTER SET EXAM QUESTIONS WITH
100% CORRECT ANSWERS
IRC
Notches in solid lumber joists , rafters and beams shall not exceed
___ of the depth
Shall not be longer than ____ of depth
Shall not be located in the middle ___ of span - ANSWER-1/6
1/3
1/3
IRC
Ends of each floor joist , beam or girder shall have not less than ___ inches of bearing
on wood or metal and not less than ___ inches on masonary or concrete - ANSWER-
1.5 Inch
3 Inches
IRC
The tension side of members ___ inches or greater in nominal thickness shall not be
notched except at the end of the members - ANSWER-4 Inches
IRC
When the header joist span does not exceed ___ feet , the header joist may be a single
member of the same size as the floor joist - ANSWER-4 Feet
IRC
Floor cantilevers shall not exceed ___ inches - ANSWER-24 Inches
IRC
Concrete slab-on-grade floors shall be a minimum of ___ inches thick - ANSWER-3 1/2
Inches
IRC
King and Jack studs shall be of the same dimension and thickness as the adjacent wall
studs - ANSWER-True
IRC
Unfaced fiberglass batt insulation may be used for fire blocking - ANSWER-True
IRC
The construction of braced walls may be of gypsum board with a minimum of ___ inch
thickness - ANSWER-1/2 Inch
,IRC
Studs in nonbearing partitions may be notched to a depth not exceeding ___ % of a
single stud width - ANSWER-40 %
IRC
Any stud in an exterior wall or bearing partition may be cut or notched to a depth not
exceeding ___ % of its width - ANSWER-25 %
IRC
End joints in top plates shall be off set at least ___ inches - ANSWER-24 Inches
IRC
Solid masonary walls of one story dwellings and garages shall not be less than ___
inches in thickness when not greater than 9 feet in height - ANSWER-6 Inches
IRC
The minimum thickness of masonary bearing walls more than on storey high shall be
___ inches - ANSWER-8 Inches
IRC
When joists , trusses or rafters are spaced 16 inches on center and the bearing studs
below are spaced 24 inches on center, they shall bear within ___ inches of the studs
beneath - ANSWER-5 Inches
IRC
Stone or masonary veneer above openings shall be supported on lintels of ____
materials - ANSWER-Noncombustable
IRC
Weepholes in masonary veneer shall not be less than an ___ inch in diameter with a
maximum spacing of ___ on center - ANSWER-3/16 Inch
33 Inches
IRC
Stone or masonary veneer shall be separated from the sheating by an air space of a
minimum of ___ inch but not more than ___ inches - ANSWER-1 Inch
4 1/2 Inch
IRC
Stone and masonary veneer installed over a backing of wood or cold formed steel shall
be limited to the first staory above grade and shall not exceed ___ inches in thickness -
ANSWER-5 Inches
IRC
, Where felt joints occur applied horizontally in a weather-resistant barrier , felt shall be
lapped not less than ___ inches - ANSWER-6 Inches
IRC
Wood framing supporting gypsum board shall not be spaced more than ___ inches on
center - ANSWER-24 Inches
IRC
Water-resistant gypsum backing board shall be permitted to be used on ceilings where
the framing spacing does not exceed ___ inches on center for 1/2 inch thick gypsum
board - ANSWER-12 Inch
IRC
Collar ties shall be a minimum of 1 x 4 inch spaced not more than ___ feet on center -
ANSWER-4 Feet
IRC
Attic vetilating openings shall be provided with corrosion-resistant wire mesh , with ___
inch minimum to ___ inch maximum openings - ANSWER-1/8 to 1/4 Inch
IRC
Combustable insulation shall be separated a minimum of ___ inches from recessed
luminaires , fan motors and other heat-producing devices - ANSWER-3 Inches
IRC
Attic access rough-framed openings shall not be less than ___ x ___ inches -
ANSWER-22 x 30 Inches
IRC
Asphalt shingles shall be secured to the roof with not less than ___ fasteners per strip
shingle or ___ fasteners per individual shingle - ANSWER-4
2
IRC
Wood shakes shall only be used on slopes of ___ units verticaly in ___ units horizontal (
25-% slope ) or greater - ANSWER-3 in 12
IRC
Roof valley flashing shall not be less than # ___ gage corrosion-resistant sheet metal -
ANSWER-26 ga
IRC
Where the roof sheating is less than ___ inch thick the fasteners for asphalt shingles
shall penetrate through the sheating - ANSWER-3/4 Inch
IRC
MASTER SET EXAM QUESTIONS WITH
100% CORRECT ANSWERS
IRC
Notches in solid lumber joists , rafters and beams shall not exceed
___ of the depth
Shall not be longer than ____ of depth
Shall not be located in the middle ___ of span - ANSWER-1/6
1/3
1/3
IRC
Ends of each floor joist , beam or girder shall have not less than ___ inches of bearing
on wood or metal and not less than ___ inches on masonary or concrete - ANSWER-
1.5 Inch
3 Inches
IRC
The tension side of members ___ inches or greater in nominal thickness shall not be
notched except at the end of the members - ANSWER-4 Inches
IRC
When the header joist span does not exceed ___ feet , the header joist may be a single
member of the same size as the floor joist - ANSWER-4 Feet
IRC
Floor cantilevers shall not exceed ___ inches - ANSWER-24 Inches
IRC
Concrete slab-on-grade floors shall be a minimum of ___ inches thick - ANSWER-3 1/2
Inches
IRC
King and Jack studs shall be of the same dimension and thickness as the adjacent wall
studs - ANSWER-True
IRC
Unfaced fiberglass batt insulation may be used for fire blocking - ANSWER-True
IRC
The construction of braced walls may be of gypsum board with a minimum of ___ inch
thickness - ANSWER-1/2 Inch
,IRC
Studs in nonbearing partitions may be notched to a depth not exceeding ___ % of a
single stud width - ANSWER-40 %
IRC
Any stud in an exterior wall or bearing partition may be cut or notched to a depth not
exceeding ___ % of its width - ANSWER-25 %
IRC
End joints in top plates shall be off set at least ___ inches - ANSWER-24 Inches
IRC
Solid masonary walls of one story dwellings and garages shall not be less than ___
inches in thickness when not greater than 9 feet in height - ANSWER-6 Inches
IRC
The minimum thickness of masonary bearing walls more than on storey high shall be
___ inches - ANSWER-8 Inches
IRC
When joists , trusses or rafters are spaced 16 inches on center and the bearing studs
below are spaced 24 inches on center, they shall bear within ___ inches of the studs
beneath - ANSWER-5 Inches
IRC
Stone or masonary veneer above openings shall be supported on lintels of ____
materials - ANSWER-Noncombustable
IRC
Weepholes in masonary veneer shall not be less than an ___ inch in diameter with a
maximum spacing of ___ on center - ANSWER-3/16 Inch
33 Inches
IRC
Stone or masonary veneer shall be separated from the sheating by an air space of a
minimum of ___ inch but not more than ___ inches - ANSWER-1 Inch
4 1/2 Inch
IRC
Stone and masonary veneer installed over a backing of wood or cold formed steel shall
be limited to the first staory above grade and shall not exceed ___ inches in thickness -
ANSWER-5 Inches
IRC
, Where felt joints occur applied horizontally in a weather-resistant barrier , felt shall be
lapped not less than ___ inches - ANSWER-6 Inches
IRC
Wood framing supporting gypsum board shall not be spaced more than ___ inches on
center - ANSWER-24 Inches
IRC
Water-resistant gypsum backing board shall be permitted to be used on ceilings where
the framing spacing does not exceed ___ inches on center for 1/2 inch thick gypsum
board - ANSWER-12 Inch
IRC
Collar ties shall be a minimum of 1 x 4 inch spaced not more than ___ feet on center -
ANSWER-4 Feet
IRC
Attic vetilating openings shall be provided with corrosion-resistant wire mesh , with ___
inch minimum to ___ inch maximum openings - ANSWER-1/8 to 1/4 Inch
IRC
Combustable insulation shall be separated a minimum of ___ inches from recessed
luminaires , fan motors and other heat-producing devices - ANSWER-3 Inches
IRC
Attic access rough-framed openings shall not be less than ___ x ___ inches -
ANSWER-22 x 30 Inches
IRC
Asphalt shingles shall be secured to the roof with not less than ___ fasteners per strip
shingle or ___ fasteners per individual shingle - ANSWER-4
2
IRC
Wood shakes shall only be used on slopes of ___ units verticaly in ___ units horizontal (
25-% slope ) or greater - ANSWER-3 in 12
IRC
Roof valley flashing shall not be less than # ___ gage corrosion-resistant sheet metal -
ANSWER-26 ga
IRC
Where the roof sheating is less than ___ inch thick the fasteners for asphalt shingles
shall penetrate through the sheating - ANSWER-3/4 Inch
IRC
