1. If unused mortar stiffens due to hydration of cement, what must you do?
Answer Dis- card the mortar
2. What minimum time must you wait before caulking or grouting new tiles?
Answer -
24-48 Hours
3. How long should you wait before installing tile on a shower pan?
Answer 24 Hours
4. 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
5. 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.
6. For safety reasons, the maximum simple slope of an excavation, up to 20 ft deep,
in Type-B soil is
Answer 1:1 (45°)
7. A Pittsburgh joint is used in
Answer HVAC ductwork
8. The drain for a pressure relief valve on a water heater should be extended to
Answer The outside of the building
9. What is the minimum slope toward the drain of a shower pan?
Answer 1/4" per foot (2%)
10. What is the diameter of #3 rebar?
Answer 3/8"
11. If a vendor fails to provide an MSDS, you have the right to call
Answer Cal/OSHA or DOSH
12. When installing a door jamb, you need shims at
,Answer Both hinge and strike sides, three on each side.
13. 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
14. When do you need bracing for a drywall wall?
Answer Diagonal bracing is needed every 25' for any drywall wall.
15. How should you clear the roots from a construction site?
Answer Clear roots to 12" below grade.
, 16. Dividing watts by amps gives you
Answer Volts
17. The most frequent on-the-job roofing accidents are
Answer Falls
18. 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
19. Lightweight concrete is best used for
A. Curb and Gutter
B. Second floor decking