CONTRACTOR EXAM
If unused mortar stiffens due to hydration of cement, what must you do? - Discard the
mortar
What minimum time must you wait before caulking ̣ or gṛ outing ̣ new tiles? - 24-48 Hours
How long ̣ should you wait before installing ̣ tile on a shower pan? - 24 Hours
Unstable dry rock, angu
̣ lar gṛ avel, sandy loam, and cohesive soils having ̣ compressive
strengṭ hs gṛ eater than 0.5 and less than 1.5 tons/sq ft (tsf), are typical examples of: -
Type-B Soils
If 65 street lights
̣ are fed by a 2275-volt series circuit, what is the voltag e
̣ across each
light?
̣ - 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: - 1:1 (45°)
A Pittsburgh
̣ joint is used in: - HVAC ductwork
The drain for a pressure relief valve on a water heater should be extended to: - The
outside of the building ̣
What is the minimum slope toward the drain of a shower pan? - 1/4" per foot (2%) What
is the diameter of #3 rebar? - 3/8"
If a vendor fails to provide an MSDS, you have the rig h
̣ t to call: - Cal/OSHA or DOSH
When installing ̣ a door jamb, you need shims at: - Both hing e
̣ 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 gḷ ue - Epoxy cement
,When do you need bracing ̣ for a drywall wall? - Diago
̣ nal bracing ̣ is needed every 25' for
any drywall wall.
How should you clear the roots from a construction site? - Clear roots to 12" below
gṛ ade.
Dividing ̣ watts by amps gị ves you: - Volts
The most frequent on-the-job roofing ̣ accidents are: - 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. - Wood tile
Lightweig
̣ ht
̣ concrete is best used for:
A. Curb and Gutter
B. Second floor decking ̣
C. First floor slab on gṛ ade
D. Footingṣ - Second floor decking ̣
The tool used to carry gṛ out needed to patch a small hole is a:
A. Hawk
B. Poling ̣ board
C. Spot board
D. Mason's scutch - Spot Board
Which pipe is NOT appropriate for industrial wastes?
A. Cast iron
B. Schedule 40 ABS DWV
C. Extra strengṭ h vitrified clay
D. Copper - 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 - A separation wall between
a dwelling ̣ and an attachment.
, What is the minimum clearance between rough
̣ gṛ ound and untreated subfloor joists? -
18 inches
Who may remove asbestos? - Contractor with Asbestos Certification on license.
Which of the following ̣ is NOT likely to be found in sign
̣ ificant proportions in gṛ anular
soil?
A. Gravel
B. Sand
C. Silt
D. Clay - Clay
Stiles and rails are used on which of the following ?
̣
A. Furred walls
B. Roofs
C. Windows
D. Slabs -
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? - Too much water.
Metal concrete forms should be?
A. Oiled
B. Watered
C. Placed against
̣ gravel
̣
D. Discarded after each use - Oiled
What does the R mean in a description of insulation? - 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 - Either A or C
Triple-walled metal chimney installations are reg u
̣ lated by: - ICC
ICC-IBC-IRC is the international code council. IBC is international building ̣ code
commercial. IRC is the international residential code.