RESIDENTIAL CONTRACTOR 2026 QUESTIONS
AND ANSWERS SET A+
✔✔The opening of a crawlspace must have a minimum access opening of at least __
inches by ___ - ✔✔18 in x 24 in
✔✔The ends of each joist, beam, or girder shall not have less than __ - ___ inches of
bearing on wood or metal - ✔✔1- 1 1/2
✔✔The endings of each joist, beam, or girder shall not have less than ___ inches on
masonry or concrete - ✔✔1/2 in
✔✔Notches in solid lumber joists, rafters, and beams shall not exceed ___ of the depth
of the member - ✔✔1/6
✔✔Notches in solid lumber joists, rafters, and beams shall not be longer than ___ of the
depth of the member - ✔✔1/3
✔✔Notches in solid lumber joists, rafters, and beams shall not be located in the middle
____ of the span - ✔✔1/3
✔✔Notches at the ends of the member (solid lumber joists, rafters, and beams) shall
not exceed ____ the depth of the member - ✔✔1/4
✔✔When headers and trimmer exceed ____ feet they must be... - ✔✔4 ft, doubled
✔✔The base course is usually ___ inches in thickness - ✔✔4 in
✔✔For wall construction, studs shall be a minimum No. ___, standard or stud grade
lumber - ✔✔3
, ✔✔Reinforcing/rebar embedded in mortar joints must be covered by at least ____
inches of mortar - ✔✔5/8 in
✔✔Solid masonry walls in a one story dwelling (or garages) shall be at least ___ inches
in thickness - ✔✔6 in
✔✔Unreinforced solid masonry parapet walls shall be at least ___inches thick. - ✔✔8 in
✔✔The height of unreinforced solid masonry parapet walls shall not exceed ____times
their thickness. - ✔✔4x
✔✔Unreinforced hollow unit masonry parapet walls shall be at least ___ inches thick -
✔✔8 in
✔✔The height of unreinforced hollow unit masonry parapet walls shall not exceed
_____ times their thickness. - ✔✔3x
✔✔The maximum corbelled projection beyond the face of the wall shall not be more
than ____ of the wall thickness - ✔✔1/2
✔✔The unsupported height of solid masonry piers shall not exceed ___ times their least
dimension - ✔✔10x
✔✔Hollow masonry piers may be used if their unsupported height is not more than
_____ times their least dimension - ✔✔4x
✔✔Solid headers must comprise at least __ percent of the wall surface in multiple
wythe masonry walls - ✔✔4%
✔✔The distance between adjacent full length headers shall not exceed ___ inches
either vertically or horizontally. - ✔✔24 in
✔✔There shall be at least one metal tie for each ____ square feet of wall area - ✔✔4.5
sq ft
✔✔Maximum vertical and horizontal spacing for all ties in a 4.5 sqft area is ___ inches
vertical and ___ inches horizontal - ✔✔24 in vertical
36 in horizontal
✔✔For glass unit masonry, standard units shall be at least _____ inches thick - ✔✔3-
7/8 in
AND ANSWERS SET A+
✔✔The opening of a crawlspace must have a minimum access opening of at least __
inches by ___ - ✔✔18 in x 24 in
✔✔The ends of each joist, beam, or girder shall not have less than __ - ___ inches of
bearing on wood or metal - ✔✔1- 1 1/2
✔✔The endings of each joist, beam, or girder shall not have less than ___ inches on
masonry or concrete - ✔✔1/2 in
✔✔Notches in solid lumber joists, rafters, and beams shall not exceed ___ of the depth
of the member - ✔✔1/6
✔✔Notches in solid lumber joists, rafters, and beams shall not be longer than ___ of the
depth of the member - ✔✔1/3
✔✔Notches in solid lumber joists, rafters, and beams shall not be located in the middle
____ of the span - ✔✔1/3
✔✔Notches at the ends of the member (solid lumber joists, rafters, and beams) shall
not exceed ____ the depth of the member - ✔✔1/4
✔✔When headers and trimmer exceed ____ feet they must be... - ✔✔4 ft, doubled
✔✔The base course is usually ___ inches in thickness - ✔✔4 in
✔✔For wall construction, studs shall be a minimum No. ___, standard or stud grade
lumber - ✔✔3
, ✔✔Reinforcing/rebar embedded in mortar joints must be covered by at least ____
inches of mortar - ✔✔5/8 in
✔✔Solid masonry walls in a one story dwelling (or garages) shall be at least ___ inches
in thickness - ✔✔6 in
✔✔Unreinforced solid masonry parapet walls shall be at least ___inches thick. - ✔✔8 in
✔✔The height of unreinforced solid masonry parapet walls shall not exceed ____times
their thickness. - ✔✔4x
✔✔Unreinforced hollow unit masonry parapet walls shall be at least ___ inches thick -
✔✔8 in
✔✔The height of unreinforced hollow unit masonry parapet walls shall not exceed
_____ times their thickness. - ✔✔3x
✔✔The maximum corbelled projection beyond the face of the wall shall not be more
than ____ of the wall thickness - ✔✔1/2
✔✔The unsupported height of solid masonry piers shall not exceed ___ times their least
dimension - ✔✔10x
✔✔Hollow masonry piers may be used if their unsupported height is not more than
_____ times their least dimension - ✔✔4x
✔✔Solid headers must comprise at least __ percent of the wall surface in multiple
wythe masonry walls - ✔✔4%
✔✔The distance between adjacent full length headers shall not exceed ___ inches
either vertically or horizontally. - ✔✔24 in
✔✔There shall be at least one metal tie for each ____ square feet of wall area - ✔✔4.5
sq ft
✔✔Maximum vertical and horizontal spacing for all ties in a 4.5 sqft area is ___ inches
vertical and ___ inches horizontal - ✔✔24 in vertical
36 in horizontal
✔✔For glass unit masonry, standard units shall be at least _____ inches thick - ✔✔3-
7/8 in
