CSLB B LICENSE GENERAL
CONTRACTOR EXAM QUESTIONS
AND CORRECT VERIFIED ANSWERS
- If unused mortar stiffens due to hydration of cement, what must you do?
- Add water and remix
- Remix without adding water
- Add more cement
- Discard the mortar
Correct Answer: D. Discard the mortar
- What minimum time must you wait before caulking or grouting new tiles?
- 12-24 Hours
- 24-48 Hours
- 48-72 Hours
- 72-96 Hours
Correct Answer: B. 24-48 Hours
- How long should you wait before installing tile on a shower pan?
- 12 Hours
- 24 Hours
- 36 Hours
- 48 Hours
Correct Answer: B. 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:
- Type-A Soils
- Type-B Soils
- Type-C Soils
- Type-D Soils
Correct Answer: B. Type-B Soils
- If 65 street lights are fed by a 2275 volt series circuit, what is the voltage
across each light?
A. 25V
B. 35V
C. 45V
D. 120V
Correct Answer: B. 35V
(Note: 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:
A. 1/2:1 (63°)
B. 3/4:1 (53°)
C. 1:1 (45°)
D. 1.5:1 (34°)
Correct Answer: C. 1:1 (45°)
7. A Pittsburgh joint is used in:
- Concrete foundation framing
- Hardwood flooring installation
- HVAC ductwork
- PVC plumbing
Correct Answer: C. HVAC ductwork
- The drain for a pressure relief valve on a water heater should be extended to:
- The crawlspace
- The nearest interior floor drain
- The drip pan under the heater
- The outside of the building
Correct Answer: D. The outside of the building
- What is the minimum slope toward the drain of a shower pan?
- 1/8" per foot (1%)
- 1/4" per foot (2%)
- 1/2" per foot (4%)
- 1" per foot (8%)
Correct Answer: B. 1/4" per foot (2%)
- What is the diameter of #3 rebar?
- 1/4"
- 3/8"
- 1/2"
- 5/8"
Correct Answer: B. 3/8"
11. If a vendor fails to provide an MSDS, you have the right to call:
- Cal/OSHA or DOSH
- The EPA
- The local fire department
- The Better Business Bureau
Correct Answer: A. Cal/OSHA or DOSH
12. When installing a door jamb, you need shims at:
- The hinge side only, three places.
- The strike side only, three places.
- Both hinge and strike sides, three on each side.
- The top header and bottom sill only.
Correct Answer: C. 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
Correct Answer: A. Epoxy cement
- When do you need bracing for a drywall wall?
- Diagonal bracing is needed every 10'
- Diagonal bracing is needed every 16'
