RESIDENTIAL CONTRACTOR PRACTICE EXAM QUESTIONS AND
ANSWERS
What is the MINIMUM overlap for joints in polyethylene film moisture barrier applied over the exterior
of a below grade foundation wall? - CORRECT ANSWER✅✅6 inches
What is the MINIMUM height required for a nonabsorbent wall surface above a bathtub? - CORRECT
ANSWER✅✅6 feet
Nails used to fasten concrete roofing tiles must penetrate the deck a MINIMUM of how many inches or
through the thickness of the deck, Whichever is less? - CORRECT ANSWER✅✅3/4 inch
How must rafters be framed to each other? - CORRECT ANSWER✅✅with a gusset plate
All of the following are benefits of platform construction as compared to balloon construction EXCEPT. -
CORRECT ANSWER✅✅easier installation of plumbing and wiring
750 feet of pipe is being laid at 0.5% slope. On a topographic map that has 6 inch contour intervals
approximately how many intervals will be depicted on the map from one end of the pipe to the other? -
CORRECT ANSWER✅✅8 contour intervals
Where would the most specific information about the size and location of windows be found in a set of
construction drawings? - CORRECT ANSWER✅✅In the window schedule
A contractor should do all of the following when estimating a project EXCEPT. - CORRECT
ANSWER✅✅assume ideal conditions
How many sheets of 4' X 8' X 1/2" drywall are needed for a room
10' X 15' with an 8' ceiling? - CORRECT ANSWER✅✅18 sheets
ANSWERS
What is the MINIMUM overlap for joints in polyethylene film moisture barrier applied over the exterior
of a below grade foundation wall? - CORRECT ANSWER✅✅6 inches
What is the MINIMUM height required for a nonabsorbent wall surface above a bathtub? - CORRECT
ANSWER✅✅6 feet
Nails used to fasten concrete roofing tiles must penetrate the deck a MINIMUM of how many inches or
through the thickness of the deck, Whichever is less? - CORRECT ANSWER✅✅3/4 inch
How must rafters be framed to each other? - CORRECT ANSWER✅✅with a gusset plate
All of the following are benefits of platform construction as compared to balloon construction EXCEPT. -
CORRECT ANSWER✅✅easier installation of plumbing and wiring
750 feet of pipe is being laid at 0.5% slope. On a topographic map that has 6 inch contour intervals
approximately how many intervals will be depicted on the map from one end of the pipe to the other? -
CORRECT ANSWER✅✅8 contour intervals
Where would the most specific information about the size and location of windows be found in a set of
construction drawings? - CORRECT ANSWER✅✅In the window schedule
A contractor should do all of the following when estimating a project EXCEPT. - CORRECT
ANSWER✅✅assume ideal conditions
How many sheets of 4' X 8' X 1/2" drywall are needed for a room
10' X 15' with an 8' ceiling? - CORRECT ANSWER✅✅18 sheets
