CSLB B trade Exam Questions With Complete Solutions
"TY" refers to:
A. conduit used in electrical work
B. gas piping
C. fitting used in a DWV system to merge a side branch with a
main branch
D. plastic pipe used in plumbing Correct Answers C. fitting
used in a DWV system to merge a side branch with a main
branch
10 . Assuming copper, standard wire type, and normal
temperature rating, what is the typical conductor size (in AWG)
for a 60-A service?
A.#10
B.#6
C.#4
D.#3 Correct Answers B.#6
11. What is the MINIMUM size nail used to attach ½" gypsum
wallboard?
A. 3d
B. 5d
C. 6d
D. 10d Correct Answers B. 5d
13. Number 10-guage wires are typically us ed for all of thes e
EXCEPT:
A. air-conditioners
B. clothes dryers
C. dishwashers
,D. saunas Correct Answers C.
Number 10-gauge wires are not used for dishwashers.
Dishwashers typically have #12-gauge or
#14-guage wire.
13.What is the MINIMUM girder for a 12' span under a deck?
A. 2" x4"
B. 4"x4"
C. 2"x6"
D. 4"x8" Correct Answers D.
4" x8".
Only the 4"x 8" has enough bending strength to support the
joists and deck.
15. Which thickness of sheetrock is often used to construction
one-hour fire-rated walls?
A. 3/8"
B. 1/2"
C. 5/8"
D. 3/4" Correct Answers C. 5/8"
156. Base cabinets shall not be more than __ -inch out of level
A. 1/8
B. 1/4
C. 3/8
D. 1/2 Correct Answers C. 3/8
159. What are the BEST fasteners for hospital cabinet
instailations?
A. 3" drywall screws
B. 3" wood cleats
,C. coated screws 18" on center
D. sheet metal seismic brace Correct Answers B.
3" wood cleats.
A wood cleat is a strip of wood attached to the wail under the
cabinet to provide for additional shear support.
17. Clay tile roofs are effective shedding-style roofs by
themselves under what circumstances?
A. never - a watertight membrane beiow is always
needed
B. on low-sloped roofs only (less than 4-in-12)
C. on steep-slope roofs on!y (more than 4-in-12)
D. only if glazed tile is used Correct Answers C. on steep-slope
roofs on!y (more than 4-in-12)
2. The drip-loop should be as close to the roof surface as
possible.
A. True
B. False Correct Answers B.
The bottom of the drip-loop should be well above the roof 12 to
24 inches, depending on jurisdiction.
20. What color is water resistant gypsum wallboard?
A. white
B. green
C. blue
D. red Correct Answers B. green
20. What kind of door would you install for someone with a
disability?
A. automatic, with MINIMUM of 3 seconds to close
, B. automatic, with a MAXIMUM of 5 seconds to open
C. manual, with MAXIMUM of 8.5 pounds to operate
D. Either A or C Correct Answers D. Either A or C
201. Which of the following is a type of wood block flooring?
A. parquet
B. wood mosaic
C. wood tile
D. All of the above Correct Answers D. All of the above
206. When notching and boring studs in bearing walls, you must
NOT cut more than:
A. 40% when boring, 25% when notching
B. 25% when boring, 40% when notching
C. 35% when boring, 20% when notching
D. 20% when boring, 35% when notching Correct Answers A.
40% when boring, 25% when notching
207. When notching and boring studs in non-bearing walls, you
must NOT cut more than:
A. 60% when boring, 40% when notching
B. 40% when boring, 60% when notching
C. 50% when boring, 40% when notching
D. 40% when boring, 50% when notching Correct Answers A.
60% when boring, 40% when notching
208. Which of the following is correct concerning the notching
and boring of joists?
A. notch at end 1 /4 of joist depth max; notch at top or bottom
1 /6 depth max; bore at least 2" from top or bottom; bore
diameter is 1/3 depth max
"TY" refers to:
A. conduit used in electrical work
B. gas piping
C. fitting used in a DWV system to merge a side branch with a
main branch
D. plastic pipe used in plumbing Correct Answers C. fitting
used in a DWV system to merge a side branch with a main
branch
10 . Assuming copper, standard wire type, and normal
temperature rating, what is the typical conductor size (in AWG)
for a 60-A service?
A.#10
B.#6
C.#4
D.#3 Correct Answers B.#6
11. What is the MINIMUM size nail used to attach ½" gypsum
wallboard?
A. 3d
B. 5d
C. 6d
D. 10d Correct Answers B. 5d
13. Number 10-guage wires are typically us ed for all of thes e
EXCEPT:
A. air-conditioners
B. clothes dryers
C. dishwashers
,D. saunas Correct Answers C.
Number 10-gauge wires are not used for dishwashers.
Dishwashers typically have #12-gauge or
#14-guage wire.
13.What is the MINIMUM girder for a 12' span under a deck?
A. 2" x4"
B. 4"x4"
C. 2"x6"
D. 4"x8" Correct Answers D.
4" x8".
Only the 4"x 8" has enough bending strength to support the
joists and deck.
15. Which thickness of sheetrock is often used to construction
one-hour fire-rated walls?
A. 3/8"
B. 1/2"
C. 5/8"
D. 3/4" Correct Answers C. 5/8"
156. Base cabinets shall not be more than __ -inch out of level
A. 1/8
B. 1/4
C. 3/8
D. 1/2 Correct Answers C. 3/8
159. What are the BEST fasteners for hospital cabinet
instailations?
A. 3" drywall screws
B. 3" wood cleats
,C. coated screws 18" on center
D. sheet metal seismic brace Correct Answers B.
3" wood cleats.
A wood cleat is a strip of wood attached to the wail under the
cabinet to provide for additional shear support.
17. Clay tile roofs are effective shedding-style roofs by
themselves under what circumstances?
A. never - a watertight membrane beiow is always
needed
B. on low-sloped roofs only (less than 4-in-12)
C. on steep-slope roofs on!y (more than 4-in-12)
D. only if glazed tile is used Correct Answers C. on steep-slope
roofs on!y (more than 4-in-12)
2. The drip-loop should be as close to the roof surface as
possible.
A. True
B. False Correct Answers B.
The bottom of the drip-loop should be well above the roof 12 to
24 inches, depending on jurisdiction.
20. What color is water resistant gypsum wallboard?
A. white
B. green
C. blue
D. red Correct Answers B. green
20. What kind of door would you install for someone with a
disability?
A. automatic, with MINIMUM of 3 seconds to close
, B. automatic, with a MAXIMUM of 5 seconds to open
C. manual, with MAXIMUM of 8.5 pounds to operate
D. Either A or C Correct Answers D. Either A or C
201. Which of the following is a type of wood block flooring?
A. parquet
B. wood mosaic
C. wood tile
D. All of the above Correct Answers D. All of the above
206. When notching and boring studs in bearing walls, you must
NOT cut more than:
A. 40% when boring, 25% when notching
B. 25% when boring, 40% when notching
C. 35% when boring, 20% when notching
D. 20% when boring, 35% when notching Correct Answers A.
40% when boring, 25% when notching
207. When notching and boring studs in non-bearing walls, you
must NOT cut more than:
A. 60% when boring, 40% when notching
B. 40% when boring, 60% when notching
C. 50% when boring, 40% when notching
D. 40% when boring, 50% when notching Correct Answers A.
60% when boring, 40% when notching
208. Which of the following is correct concerning the notching
and boring of joists?
A. notch at end 1 /4 of joist depth max; notch at top or bottom
1 /6 depth max; bore at least 2" from top or bottom; bore
diameter is 1/3 depth max
