CSLB B TRADE EXAM TEST BANK
QUESTIONS WITH 100%
CORRECT ANSWERS 2024/2025
UPDATE
Nailing Scheduling for stud to sole plate:
A face nail, 4-nails, 8d, OR 3-nails, 16d, spacing NIA
B. face nail, 3-nails, 10d, OR 2-nails, 8d, 16-in o.c.
C. end nail, 2-nails, 16d, OR 3-nails, 16d, 16-in o.c.
D. toe nail, 3-nails, 8d, OR 2-nails, 16d, spacing N/A - Answer-Toe nail, 3-nails, 8d, OR
2-nails, 16d, spacing NIA
Nailing Scheduling for ceiling joist to top plate:
A. face nail, 4-nails, 10d, spacing N/A
B. toe nail, 3-nails, 8d, spacing N/A
C. toe nail, 3-nails, 8d, 16-in o.c.
D. face nail, 3-nails, 10d, 16-in o.c. (staggered) - Answer-B. toe nail, 3-nails, 8d, spacing
N/A
Nailing Schedule for rafters to top plate:
A. face nail, 3-nails, 1 0d, spacing NIA
B. face nail, 3-nails, 8d, spacing N/A
C. face nail, 2-nails, 16d, spacing NIA
D. end nail, 2-nails, 16d, spacing N/A - Answer-C. face nail, 2-nails, 16d, spacing NIA
Nailing Schedule for corner studs:
A. 1-nail, 10d, 24-in o.c.
B. 1-nail, 8d, 32-in o.c.
C. 1-nail, 10d, 16-in o.c.
D. 1-nail, 8d, 24-in o.c. - Answer-A. 1-nail, 10d, 24-in o.c.
Nailing Schedule for ceiling joist lapped:
A. face nail, 3-nails, 1 0d, spacing N/A
B. end nail, 3-nails, 10d, spacing NIA
C. face nail, 2-nails, 16d, spacing NIA
D. face nail, 3-nails, 16d, spacing NIA - Answer-A.
Face nail, 3-nails, 10d, spacing N/A
,The tolerance for an out of perpendicular condition where walls intersect shall be _-inch
for the first 10 feet of length; thereafter, the rate of deviation shall not exceed _-inch in
20 feet or more of wall length.
A. 1/8 ... 1/8
B. 1/4 ... 1/2
C. 3/8 ... 1/2
D. 1/2 ... 5/8 - Answer-B. 1/4 ... 1/2
House ventilation can include all of the following EXCEPT:
A. venting roofs to flush out warm moist air
B. exhausting stale air
C. introducing fresh air
D. a way to add moisture to a home in winter - Answer-A
Hous ventilation has nothing to do with venting roofs to flush out warm moist air.
Holes and notches in 2-by-4 studs in bearing walls:
A. are not allowed
B. must be within 12 inches of the end of the stud
C. must be in the middle 1/3 of the stud length
D. must leave 2/3 of the stud depth intact - Answer-D.
Must leave 2/3 of the stud depth intact. Notches and holes in 2-by-4 studs in bearing
walls MUST ieave 2/3 of the stud depth intact. This question is tricky because many
people answer "C", thinking that the holes or notches must be in the middle third of the
stud. If it is a notch though, it can't be in the middle of the stud.
Which material is NOT a vapor barrier?
A. polyethylene film
B. house-wrap
C. kraft paper
D. vinyl wallpaper - Answer-B.
House-wrap is only an air barrier.
Truss uplift is caused primarily by:
A. differential humidity levels within the attic
B. mixing different types of trusses in an attic space
C. insufficient attic insulation
D. improperiy attaching drywaH to the celiing of the top floor - Answer-A.
Truss uplift is caused by differential humidity· levels in the attic between the top and
bottom cords.
Common soffit and fascia problems include all of the following EXCEPT:
A. burn-through due to ultraviolet light
B. loose or missing pieces
C. rot
D. mechanical damage - Answer-A. burn-through due to ultraviolet light
,Which of the following would NOT cause a column to shift?
A. frost heave
B. improper footings or foundations
C. mechanical damage
D. rising damp - Answer-D.
Rising damp.
Joist twisting or warping is commonly caused by:
A. uneven settling
B. poor end bearing
C. lumber shrinking unevenly as it dries
D. higher-than-anticipated loading of the deck - Answer-C. lumber shrinking unevenly as
it dries
Ends of beams should rest on:
A. columns only
B. foundations only
C. 3-1/2-inches of solid material
D. wood shims - Answer-C at least 3-1/2-inches of solid material
Are beams allowed to rest on concrete block walls?
A. only if there are wood shims between the beam and the block
B. only if at least the top seven-inches of block is filled with concrete
C. only if there is at least six inches of end bearing
D. This is not allowed. - Answer-B. Beams can sit on hollow concrete block walls if at
LEAST the top seven inches of block is filled with concrete.
Notches in beams should:
A. not be present
B. not be in the middle 1/3 of the beam span
C. be in the middle 1/3 of the beam span
D. be in the bottom 1/4 of the beam - Answer-A. Not be present.
Beams should not be notched.
One function of floor joists may be to:
A. vertically support beams
B. laterally support columns
C. vertically support foundations
D. laterally support masonry walls - Answer-D.
Joists may be called upon to
laterally support masonry walls.
The weakest joist-to beam connection is:
A. a joist on top of a wood beam running across the full width of the beam
B. a joist and beam fastened with a mortise and tendon joint
C. a ledger board
, D. a joist resting on a wood beam by one-half of an inch - Answer-D.
A joist resting on a wood beam by one-half of an inch.
A joist resting on a beam by only one-half of an inch is scary. It won't take much
movement for that joist to fall off.
Lightweight concrete is BEST used at the:
A. curb & gutter
B. second floor decking
C. first floor slab on grade
D. footings - Answer-B.
Second floor decking.
It is costly, but very strong. It offers greatest advantage when used for upper stories
because it reduces the strength requirements for
the supporting framework.
What tool do you normally use for striking joints?
A. haulk
B. trowel
C. jointer or jointing tool
D. stiff brush - Answer-B.
A trowel is normally used for striking joints.
What is a bush-hammer used for?
A. install bushings on a wheel
B. roughen surfaces of hardened concrete
C. straighten metai sheeting
D. pull objects with impact action - Answer-B.
Roughen the surface of hardened concrete.
It is a hardened steel tool with a serrated face or several rows of pyramid-shaped
points. It is used to roughen the surface of hardened concrete to provide better bonding
of fresh concrete poured over it.
Who decides if 3,000 psi strength concrete is fit to pour?
A. structural engineer
B. supplier
C. concrete contractor
D. building inspector - Answer-A.
Structural engineer.
psi = pounds per square inch
Concrete should be poured against:
A any wood siding
B. cedar or redwood siding only
C. metal flashing
D. metal form material - Answer-D.
QUESTIONS WITH 100%
CORRECT ANSWERS 2024/2025
UPDATE
Nailing Scheduling for stud to sole plate:
A face nail, 4-nails, 8d, OR 3-nails, 16d, spacing NIA
B. face nail, 3-nails, 10d, OR 2-nails, 8d, 16-in o.c.
C. end nail, 2-nails, 16d, OR 3-nails, 16d, 16-in o.c.
D. toe nail, 3-nails, 8d, OR 2-nails, 16d, spacing N/A - Answer-Toe nail, 3-nails, 8d, OR
2-nails, 16d, spacing NIA
Nailing Scheduling for ceiling joist to top plate:
A. face nail, 4-nails, 10d, spacing N/A
B. toe nail, 3-nails, 8d, spacing N/A
C. toe nail, 3-nails, 8d, 16-in o.c.
D. face nail, 3-nails, 10d, 16-in o.c. (staggered) - Answer-B. toe nail, 3-nails, 8d, spacing
N/A
Nailing Schedule for rafters to top plate:
A. face nail, 3-nails, 1 0d, spacing NIA
B. face nail, 3-nails, 8d, spacing N/A
C. face nail, 2-nails, 16d, spacing NIA
D. end nail, 2-nails, 16d, spacing N/A - Answer-C. face nail, 2-nails, 16d, spacing NIA
Nailing Schedule for corner studs:
A. 1-nail, 10d, 24-in o.c.
B. 1-nail, 8d, 32-in o.c.
C. 1-nail, 10d, 16-in o.c.
D. 1-nail, 8d, 24-in o.c. - Answer-A. 1-nail, 10d, 24-in o.c.
Nailing Schedule for ceiling joist lapped:
A. face nail, 3-nails, 1 0d, spacing N/A
B. end nail, 3-nails, 10d, spacing NIA
C. face nail, 2-nails, 16d, spacing NIA
D. face nail, 3-nails, 16d, spacing NIA - Answer-A.
Face nail, 3-nails, 10d, spacing N/A
,The tolerance for an out of perpendicular condition where walls intersect shall be _-inch
for the first 10 feet of length; thereafter, the rate of deviation shall not exceed _-inch in
20 feet or more of wall length.
A. 1/8 ... 1/8
B. 1/4 ... 1/2
C. 3/8 ... 1/2
D. 1/2 ... 5/8 - Answer-B. 1/4 ... 1/2
House ventilation can include all of the following EXCEPT:
A. venting roofs to flush out warm moist air
B. exhausting stale air
C. introducing fresh air
D. a way to add moisture to a home in winter - Answer-A
Hous ventilation has nothing to do with venting roofs to flush out warm moist air.
Holes and notches in 2-by-4 studs in bearing walls:
A. are not allowed
B. must be within 12 inches of the end of the stud
C. must be in the middle 1/3 of the stud length
D. must leave 2/3 of the stud depth intact - Answer-D.
Must leave 2/3 of the stud depth intact. Notches and holes in 2-by-4 studs in bearing
walls MUST ieave 2/3 of the stud depth intact. This question is tricky because many
people answer "C", thinking that the holes or notches must be in the middle third of the
stud. If it is a notch though, it can't be in the middle of the stud.
Which material is NOT a vapor barrier?
A. polyethylene film
B. house-wrap
C. kraft paper
D. vinyl wallpaper - Answer-B.
House-wrap is only an air barrier.
Truss uplift is caused primarily by:
A. differential humidity levels within the attic
B. mixing different types of trusses in an attic space
C. insufficient attic insulation
D. improperiy attaching drywaH to the celiing of the top floor - Answer-A.
Truss uplift is caused by differential humidity· levels in the attic between the top and
bottom cords.
Common soffit and fascia problems include all of the following EXCEPT:
A. burn-through due to ultraviolet light
B. loose or missing pieces
C. rot
D. mechanical damage - Answer-A. burn-through due to ultraviolet light
,Which of the following would NOT cause a column to shift?
A. frost heave
B. improper footings or foundations
C. mechanical damage
D. rising damp - Answer-D.
Rising damp.
Joist twisting or warping is commonly caused by:
A. uneven settling
B. poor end bearing
C. lumber shrinking unevenly as it dries
D. higher-than-anticipated loading of the deck - Answer-C. lumber shrinking unevenly as
it dries
Ends of beams should rest on:
A. columns only
B. foundations only
C. 3-1/2-inches of solid material
D. wood shims - Answer-C at least 3-1/2-inches of solid material
Are beams allowed to rest on concrete block walls?
A. only if there are wood shims between the beam and the block
B. only if at least the top seven-inches of block is filled with concrete
C. only if there is at least six inches of end bearing
D. This is not allowed. - Answer-B. Beams can sit on hollow concrete block walls if at
LEAST the top seven inches of block is filled with concrete.
Notches in beams should:
A. not be present
B. not be in the middle 1/3 of the beam span
C. be in the middle 1/3 of the beam span
D. be in the bottom 1/4 of the beam - Answer-A. Not be present.
Beams should not be notched.
One function of floor joists may be to:
A. vertically support beams
B. laterally support columns
C. vertically support foundations
D. laterally support masonry walls - Answer-D.
Joists may be called upon to
laterally support masonry walls.
The weakest joist-to beam connection is:
A. a joist on top of a wood beam running across the full width of the beam
B. a joist and beam fastened with a mortise and tendon joint
C. a ledger board
, D. a joist resting on a wood beam by one-half of an inch - Answer-D.
A joist resting on a wood beam by one-half of an inch.
A joist resting on a beam by only one-half of an inch is scary. It won't take much
movement for that joist to fall off.
Lightweight concrete is BEST used at the:
A. curb & gutter
B. second floor decking
C. first floor slab on grade
D. footings - Answer-B.
Second floor decking.
It is costly, but very strong. It offers greatest advantage when used for upper stories
because it reduces the strength requirements for
the supporting framework.
What tool do you normally use for striking joints?
A. haulk
B. trowel
C. jointer or jointing tool
D. stiff brush - Answer-B.
A trowel is normally used for striking joints.
What is a bush-hammer used for?
A. install bushings on a wheel
B. roughen surfaces of hardened concrete
C. straighten metai sheeting
D. pull objects with impact action - Answer-B.
Roughen the surface of hardened concrete.
It is a hardened steel tool with a serrated face or several rows of pyramid-shaped
points. It is used to roughen the surface of hardened concrete to provide better bonding
of fresh concrete poured over it.
Who decides if 3,000 psi strength concrete is fit to pour?
A. structural engineer
B. supplier
C. concrete contractor
D. building inspector - Answer-A.
Structural engineer.
psi = pounds per square inch
Concrete should be poured against:
A any wood siding
B. cedar or redwood siding only
C. metal flashing
D. metal form material - Answer-D.
