If unused mortar stiffens due to hydration of cement, what must you do? - ANSWER Discard the mortar
What minimum time must you wait before caulking or grouting new tiles? - ANSWER 24-48 Hours
How long should you wa
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If unused mortar stiffens due to hydration of cement, what must you do? - ANSWER Discard the mortar
What minimum time must you wait before caulking or grouting new tiles? - ANSWER 24-48 Hours
How long should you wait before installing tile on a shower pan? - ANSWER 24 Hours
Unstable dry rock, angular gravel, sandy loam, and cohesive soils having compressive strengths greater than 0.5 and less than 1.5 tons/sq ft (tsf), are typical examples of: - ANSWER Type-B Soils
If 65 street lights are fed by a 2275 volt series circuit, what is the voltage across each light? - ANSWER 35V
In a series circuit, the total voltage is divided equally.
For safety reasons, the maximum simple slope of an excavation, up to 20 ft deep, in Type-B soil is: - ANSWER 1:1 (45°)
A Pittsburgh joint is used in: - ANSWER HVAC ductwork
The drain for a pressure relief valve on a water heater should be extended to: - ANSWER The outside of the building
What is the minimum slope toward the drain of a shower pan? - ANSWER 1/4" per foot (2%)
What is the diameter of #3 rebar? - ANSWER 3/8"
If a vendor fails to provide an MSDS, you have the right to call: - ANSWER Cal/OSHA or DOSH
When installing a door jamb, you need shims at: - ANSWER Both hinge and strike sides, three on each side.
Which of the following is used to adhere vinyl floors?
A. Epoxy cement
B. Asphalt mastic
C. Latex primer
D. White glue - ANSWER Epoxy cement
When do you need bracing for a drywall wall? - ANSWER Diagonal bracing is needed every 25' for any drywall wall.
How should you clear the roots from a construction site? - ANSWER Clear roots to 12" below grade.
Dividing watts by amps gives you: - ANSWER Volts
The most frequent on-the-job roofing accidents are: - ANSWER Falls
Which of the following is NOT a type of wood block flooring?
A. Parquet
B. Wood Mosaic
C. Wood Tile
D. All of the above. - ANSWER Wood tile
Lightweight concrete is best used for:
A. Curb and Gutter
B. Second floor decking
C. First floor slab on grade
D. Footings - ANSWER Second floor decking
The tool used to carry grout needed to patch a small hole is a:
A. Hawk
B. Poling board
C. Spot board
D. Mason's scutch - ANSWER Spot Board
Which pipe is NOT appropriate for industrial wastes?
A. Cast iron
B. Schedule 40 ABS DWV
C. Extra strength vitrified clay
D. Copper - ANSWER Copper
Where do you need a fire wall?
A. Between a living room and a bedroom
B. Between a bedroom and a bathroom
C. Between a kitchen and a bath
D. A separation wall between a dwelling and an attachment - ANSWER A separation wall between a dwelling and an attachment.
What is the minimum clearance between rough ground and untreated subfloor joists? - ANSWER 18 inches
Who may remove asbestos? - ANSWER Contractor with Asbestos Certification on license.
Which of the following is NOT likely to be found in significant proportions in granular soil?
A. Gravel
B. Sand
C. Silt
D. Clay - ANSWER Clay
Stiles and rails are used on which of the following?
A. Furred walls
B. Roofs
C. Windows
D. Slabs - ANSWER Windows.
A stile is the vertical edges of the window and the rails are the bottom and top.
What does a high slump test indicate? - ANSWER Too much water.
Metal concrete forms should be?
A. Oiled
B. Watered
C. Placed against gravel
D. Discarded after each use - ANSWER Oiled
What does the R mean in a description of insulation? - ANSWER Resistance
What kind of door would you install for someone with a disability?
A. Automatic with minimum of 3 seconds to close
B. Automatic with maximum of 5 seconds to open
C. Manual with maximum of 8.5 pounds to operate
D. Either A or C - ANSWER Either A or C
Triple-walled metal chimney installations are regulated by: - ANSWER ICC
ICC-IBC-IRC is the international code council. IBC is international building code commercial. IRC is the international residential code.
If you are a general contractor, you should call a specialty contractor when: - ANSWER You encounter an unfamiliar trade.
When a stairway serves a public building, what is the minimum number of steps for which a handrail is required? - ANSWER Two
What is the minimum underlayment for asphalt shingles? - ANSWER 15 pounds
How long should you wait before sealing new tile work? - ANSWER 2 weeks
When do you install insulation? - ANSWER After the electrical and plumbing are approved.
When do you NOT need an exhaust fan in a bathroom? - ANSWER When there is a window in the bathroom.
What is a bush-hammer used for? - ANSWER Roughen surface of hardened concrete.
When you say a wall is perfect it is: - ANSWER Both plumb and straight.
The purpose of a batter board in concrete work is: - ANSWER Support layout strings when location foundations.
What is the difference between a hip jack rafter and a common rafter? - ANSWER A hip jack runs from the top plate to a hip rafter, but a common rafter runs to the ridge board.
When should you float a concrete surface? - ANSWER As soon as the water sheen evaporates
When installing drywall screws you should:
A. Countersink
B. Drive just below the face of the board
C. Leave slightly above the surface
D. Use the highest torque setting - ANSWER Drive just below the face of the board without breaking the paper.
Before placing tile with mastic, you should: - ANSWER Seal the surface.
At an excavation, an Underground Service Alert (U.S.A) marking on the dirt that uses red paint or chalk means: - ANSWER Electric power
How many diameters is the minimum lap (overlap) between sections of rebar in reinforced masonry?
A. 7
B. 12
C. 24
D. 30 - ANSWER 30 diameters
What is the minimum length of a handrail extension that is required for a stairway? - ANSWER 12"
When may a contractor work alone on a roof at a construction site? - ANSWER Never
A Freon recovery system is required when:
A. Replacing a burnt out rotor in a hermetic unit
B. Overhauling a rooftop A/C unit
C. Scrapping an old refrigeration unit
D. All of the above - ANSWER All of the above
Which of the following would you use to install roofing tiles?
A. Slathers stake
B. Any roofing tool
C. Roofers hatchet
D. Masking tape - ANSWER A slathers stake
A slathers stake looks like the head of a hammerhead shark. The head forms a T with the shaft, but the head is slightly bent. It provides a flat, straight edge for cutting and trimming your slate.
When determining the layout of a residential building, the most important element to take into account is the: - ANSWER Property lines
Where should the first upper cabinet be installed? - ANSWER At an inside corner
Cemented soil: - ANSWER Cannot be crushed into individual particles with fingers
Which tool is best for measuring odd angles in an existing structure? - ANSWER Bevel square
From the following list, the best choice of woods for exterior carpentry are:
A. Redwood and bald cypress
B. Spruce and fir
C. Pine and sugar maple
D. Fir and hemlock - ANSWER Redwood and bald cypress
If a contractor discovers damaged utilities when starting a job, he should: - ANSWER Call the utility department involved.
Type-C soils have a compression strength of no more than 0.5 tsp. Which of the following would not be classified as a Type-C soil?
A. Rounded gravel
B. Crushed rock
C. Sand or loamy sand
D. Water-logged soil or submerged unstable rock - ANSWER Crushed rock
What is the correct exposure for typical hip tiles? - ANSWER 6" Hip and ridge tiles are always installed with a 6" exposure.
Which type of window requires tempered glass?
A. Skylight
B. Sliding Glass Door
C. Exposed top edge is less than 36" from the floor
D. Exposed bottom edge is more than 18" from the floor - ANSWER Sliding glass door.
The correct sequence for installing vapor barrier is:
A. Siding-shear panel-paper
B. Shear panel-paper-siding
C. Paper-siding-shear panel
D. Shear panel-siding-paper - ANSWER Shear panel-paper-siding
What is the slope in degrees of a roof with a rise of 12 and a run of 12?
A. 22.5 degrees
B. 45.0 degrees
C. 50.0 degrees
D. 90.0 degrees - ANSWER 45 degrees.
How deep must electrical be in a public area if the conduit is PVC and there is no vehicle traffic? - ANSWER 18"
In electrical work, the green wire is the: - ANSWER Grounding conductor
What is the longest length ladder that Cal/OSHA approves? - ANSWER 44' is the longest ladder Cal/OSHA approves
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