CSLB B trade Exam 2024| Questions with multiple answers
Lightweight concrete is BEST used at the:
A. curb & gutter
B. second floor decking
C. first floor slab on grade
D. footings **** 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 **** 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 **** 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 **** 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 **** D.
Metal form material.
,When metal forms are not used, only "Form Grade" plywood, not siding, should be used
in the wood forms.
How soon should you pour concrete after you have
mixed it without additives?
A. 1/2 hour
B. 1 hour
C. 4 hours
D. 8 hours **** A.
1/2 hour.
You should begin placing concrete within 30 minutes of mixing, and it MUST be placed
within 90 minutes to prevent the concrete from becoming too stiff and difficult to place
and finish.
In cold climates, you cover freshly poured concrete to:
A. prevent hydration
B. prevent discoloration
C. prevent warping
D. prevent freezing **** D.
Prevent freezing.
In order to hold in the heat, long enough for curing.
When should you trowel concrete?
A. when just poured
B. 1 hour after pouring
C. when concrete becomes firm, several hours after pour
D. after 24 hours **** C.
You should trowel concrete several hours after pour when concrete becomes firm.
A vapor barrier might not be needed between wood and concrete:
A. if the concrete is older than one year
B. with a moisture-proof sealer on the wood
C. A and B
D. neither A nor B, it will always be needed **** C. A and B
How many cubic yards of cement are required for a circle 4in thick, with a circumference
of 10ft?
A. 1/10 yd3
B. 1/5 yd3
C. 1/2 yd3
D. 1 yd3 **** A.
1/10 yd3
Volume = area x thickness
Area of a circle = pr2
r = circumference + 2p
r = 10 + 2p
,p=3.14
r= 10 + 6.28 =1.59 ft
Area of a circle = pr2
Area:::: p (1.59)2 == 3.14 x 1.59 x 1.59 Area== 7.94
Volume = area x thickness
4" + 12" per foot == 0.33333' Volume== 7.94 x 0.33:::: 2.62 ft3 Conver to yards
2.62 + 27 =::.097 yd3
Round to 0.10 yd or 1/10
What is the correct procedure when drilling concrete?
A. use steady, medium pressure
B. periodically pull back to let dust escape
C. A&B
D. concrete should never be drillled **** C. A&B
What is the MINIMUM size for anchor bolts?
A. 1/4"
B. 1/2"
C. 3/4"
D. 1" **** B. 1/2"
What is the MINIMUM depth for a one-story foundation?
A. 8"
B. 12"
C. 18"
D. 24" **** B. 12"
How do you normally secure a wood frame house to its foundation?
A. embed the frame in the concrete foundation
B. anchor the frame to the concrete foundation
C. adhere the frame to the foundation
D. theie is no connection between the frame and the foundation **** B
Anchor the frame to the concrete foundation.
A wood frame is normally secured to its foundation by anchoring
the frame to the concrete foundation.
What is the MINIMUM thickness of the footing of a
3-story building?
A. 4"
B. 6"
C. 8"
D. 10" **** C
8" is the MINIMUM thickness
of the footing of a 3-story building.
What effect does calcium chloride have on concrete?
, A. makes it set faster
B. makes it set slower
C. makes it stronger
D. has no effect **** A. makes it set faster
Which of the following is MOST critical when mixing concrete?
A. water-to-cement ratio
B. water-to-sand ratio
C. sand-to-gravel ratio
D. water-to-gravel ratio **** A.
Water-to-cement ratio.
Too much water will weaken the concrete and too little will make the concrete too stiff to
be worked easily.
Grade beams intended to intersect at right angles shall be square to each other within _
inch in 20 diagonal feet.
A. 1
B. 1-1/8
C. 1-1/4
D. 1-1/2 **** A. 1"
Measure for square using the "3, 4, 5 triangle method"
All fasteners and hardware (except J-bolts) that come into contact with pressure-treated
wood shall be _ or heavy hot-dipped galvanized.
A. chromium steel
B. stainless steel
C. cold-rolled steel
D. hot-rolled steel **** B. stainless steel
When it comes to resisting wind loads, wood frame walls can be thought as:
A. beams on their sides
B. columns laying flat
C. floors installed on their sides
D. collar ties on their ends **** C.
Floors installed on their sides. Wood frame walls can be thought of as floors on their
sides with respect to wind loads. The wind load feels the same to a wall as people
standing on a floor.
Girts in a bearing wall are necessary if:
A. there is no masonry veneer
B. there is no finish on either side of the wall
C. there is only drywall on one side of the wall and nothing on the other
D. there is only plywood siding on one side of the wall and nothing on the other side ****
B.
There is no finish on either side of the wall.
Bearing walls need girts if there is no sheathing or drywall, for example, on either side.
Lightweight concrete is BEST used at the:
A. curb & gutter
B. second floor decking
C. first floor slab on grade
D. footings **** 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 **** 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 **** 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 **** 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 **** D.
Metal form material.
,When metal forms are not used, only "Form Grade" plywood, not siding, should be used
in the wood forms.
How soon should you pour concrete after you have
mixed it without additives?
A. 1/2 hour
B. 1 hour
C. 4 hours
D. 8 hours **** A.
1/2 hour.
You should begin placing concrete within 30 minutes of mixing, and it MUST be placed
within 90 minutes to prevent the concrete from becoming too stiff and difficult to place
and finish.
In cold climates, you cover freshly poured concrete to:
A. prevent hydration
B. prevent discoloration
C. prevent warping
D. prevent freezing **** D.
Prevent freezing.
In order to hold in the heat, long enough for curing.
When should you trowel concrete?
A. when just poured
B. 1 hour after pouring
C. when concrete becomes firm, several hours after pour
D. after 24 hours **** C.
You should trowel concrete several hours after pour when concrete becomes firm.
A vapor barrier might not be needed between wood and concrete:
A. if the concrete is older than one year
B. with a moisture-proof sealer on the wood
C. A and B
D. neither A nor B, it will always be needed **** C. A and B
How many cubic yards of cement are required for a circle 4in thick, with a circumference
of 10ft?
A. 1/10 yd3
B. 1/5 yd3
C. 1/2 yd3
D. 1 yd3 **** A.
1/10 yd3
Volume = area x thickness
Area of a circle = pr2
r = circumference + 2p
r = 10 + 2p
,p=3.14
r= 10 + 6.28 =1.59 ft
Area of a circle = pr2
Area:::: p (1.59)2 == 3.14 x 1.59 x 1.59 Area== 7.94
Volume = area x thickness
4" + 12" per foot == 0.33333' Volume== 7.94 x 0.33:::: 2.62 ft3 Conver to yards
2.62 + 27 =::.097 yd3
Round to 0.10 yd or 1/10
What is the correct procedure when drilling concrete?
A. use steady, medium pressure
B. periodically pull back to let dust escape
C. A&B
D. concrete should never be drillled **** C. A&B
What is the MINIMUM size for anchor bolts?
A. 1/4"
B. 1/2"
C. 3/4"
D. 1" **** B. 1/2"
What is the MINIMUM depth for a one-story foundation?
A. 8"
B. 12"
C. 18"
D. 24" **** B. 12"
How do you normally secure a wood frame house to its foundation?
A. embed the frame in the concrete foundation
B. anchor the frame to the concrete foundation
C. adhere the frame to the foundation
D. theie is no connection between the frame and the foundation **** B
Anchor the frame to the concrete foundation.
A wood frame is normally secured to its foundation by anchoring
the frame to the concrete foundation.
What is the MINIMUM thickness of the footing of a
3-story building?
A. 4"
B. 6"
C. 8"
D. 10" **** C
8" is the MINIMUM thickness
of the footing of a 3-story building.
What effect does calcium chloride have on concrete?
, A. makes it set faster
B. makes it set slower
C. makes it stronger
D. has no effect **** A. makes it set faster
Which of the following is MOST critical when mixing concrete?
A. water-to-cement ratio
B. water-to-sand ratio
C. sand-to-gravel ratio
D. water-to-gravel ratio **** A.
Water-to-cement ratio.
Too much water will weaken the concrete and too little will make the concrete too stiff to
be worked easily.
Grade beams intended to intersect at right angles shall be square to each other within _
inch in 20 diagonal feet.
A. 1
B. 1-1/8
C. 1-1/4
D. 1-1/2 **** A. 1"
Measure for square using the "3, 4, 5 triangle method"
All fasteners and hardware (except J-bolts) that come into contact with pressure-treated
wood shall be _ or heavy hot-dipped galvanized.
A. chromium steel
B. stainless steel
C. cold-rolled steel
D. hot-rolled steel **** B. stainless steel
When it comes to resisting wind loads, wood frame walls can be thought as:
A. beams on their sides
B. columns laying flat
C. floors installed on their sides
D. collar ties on their ends **** C.
Floors installed on their sides. Wood frame walls can be thought of as floors on their
sides with respect to wind loads. The wind load feels the same to a wall as people
standing on a floor.
Girts in a bearing wall are necessary if:
A. there is no masonry veneer
B. there is no finish on either side of the wall
C. there is only drywall on one side of the wall and nothing on the other
D. there is only plywood siding on one side of the wall and nothing on the other side ****
B.
There is no finish on either side of the wall.
Bearing walls need girts if there is no sheathing or drywall, for example, on either side.
