GENERAL CONTRACTOR
EXAM
• If unused mortar stiffens due to hydration of cement, what
must you do? ANSWER Dis- card 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?
• Epoxy cement
• Asphalt mastic
• Latex primer
• 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?
• Parquet
• Wood Mosaic
• Wood Tile
• All of the above. ANSWER Wood tile
• Lightweight concrete is best used for ANSWER
• Curb and Gutter
• Second floor decking
• First floor slab on grade
• Footings ANSWER Second floor decking
• The tool used to carry grout needed to patch a small hole is
a
• Hawk