CSLB B LICENSE GENERAL CONTRACTOR EXAM
1. What should you do if unused mortar hardens due to cement hydration?
- Answer: Discard the mortar.
2. What is the minimum waiting period before applying caulk or grout to new tiles?
- Answer: 24 to 48 hours.
3. How long should you wait before placing tile on a shower pan?
- Answer: 24 hours.
4. What types of soil are classified as Type-B soils, characterized by unstable dry rock, angular gravel,
sandy loam, and cohesive soils with compressive strengths between 0.5 and 1.5 tons per square foot
(tsf)?
- Answer: Type-B Soils.
5. If a series circuit powers 65 street lights with a total voltage of 2275 volts, what is the voltage across
each light?
- Answer: 35 volts.
6. In a series circuit, how is total voltage distributed?
- Answer: The total voltage is divided equally among the lights.
7. For safety, what is the maximum slope permitted for an excavation up to 20 feet deep in Type-B soil?
- Answer: 1:1 (or 45°).
8. Where is a Pittsburgh joint commonly utilized?
- Answer: In HVAC ductwork.
,9. Where should the drain for a pressure relief valve on a water heater be directed?
- Answer: It should be extended to the outside of the building.
10. What is the required minimum slope towards the drain in a shower pan?
- Answer: 1/4 inch per foot (2%).
11. What is the diameter of #3 rebar?
- Answer: 3/8 inches.
12. If a vendor does not provide a Material Safety Data Sheet (MSDS), what action can you take?
- Answer: You may contact Cal/OSHA or DOSH.
13. When installing a door jamb, where do you need to place shims?
- Answer: Shims are needed on both the hinge and strike sides, three per side.
14. Which adhesive is commonly used for vinyl flooring?
- A. Epoxy cement
B. Asphalt mastic
C. Latex primer
D. White glue
- Answer: A. Epoxy cement.
15. When is bracing necessary for a drywall wall?
- Answer: Diagonal bracing is required every 25 feet for any drywall wall.
16. How should you remove roots from a construction site?
- Answer: Clear roots to 12 inches below grade.
17. What do you obtain by dividing watts by amps?
, - Answer: Volts.
18. What are the most common roofing accidents observed on the job?
- Answer: Falls.
19. Which of the following is NOT classified as a type of wood block flooring?
- A. Parquet
B. Wood mosaic
C. Wood tile
D. All of the above
- Answer: C. Wood tile.
20. Where is lightweight concrete most appropriately used?
- A. Curb and gutter
B. Second-floor decking
C. First-floor slab on grade
D. Footings
- Answer: B. Second-floor decking.
21. Which tool is suitable for carrying grout needed to fill a small hole?
- A. Hawk
B. Poling board
C. Spot board
D. Mason's scutch
- Answer: C. Spot board.
22. Which type of pipe is NOT suitable for handling industrial wastes?
- A. Cast iron
B. Schedule 40 ABS DWV
, C. Extra strength vitrified clay
D. Copper
- Answer: D. Copper.
23. Where is a fire wall necessary?
- 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
- Answer: D. A separation wall between a dwelling and an attachment.
What is the minimum clearance between rough ground 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 significant proportions in granular 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.
1. What should you do if unused mortar hardens due to cement hydration?
- Answer: Discard the mortar.
2. What is the minimum waiting period before applying caulk or grout to new tiles?
- Answer: 24 to 48 hours.
3. How long should you wait before placing tile on a shower pan?
- Answer: 24 hours.
4. What types of soil are classified as Type-B soils, characterized by unstable dry rock, angular gravel,
sandy loam, and cohesive soils with compressive strengths between 0.5 and 1.5 tons per square foot
(tsf)?
- Answer: Type-B Soils.
5. If a series circuit powers 65 street lights with a total voltage of 2275 volts, what is the voltage across
each light?
- Answer: 35 volts.
6. In a series circuit, how is total voltage distributed?
- Answer: The total voltage is divided equally among the lights.
7. For safety, what is the maximum slope permitted for an excavation up to 20 feet deep in Type-B soil?
- Answer: 1:1 (or 45°).
8. Where is a Pittsburgh joint commonly utilized?
- Answer: In HVAC ductwork.
,9. Where should the drain for a pressure relief valve on a water heater be directed?
- Answer: It should be extended to the outside of the building.
10. What is the required minimum slope towards the drain in a shower pan?
- Answer: 1/4 inch per foot (2%).
11. What is the diameter of #3 rebar?
- Answer: 3/8 inches.
12. If a vendor does not provide a Material Safety Data Sheet (MSDS), what action can you take?
- Answer: You may contact Cal/OSHA or DOSH.
13. When installing a door jamb, where do you need to place shims?
- Answer: Shims are needed on both the hinge and strike sides, three per side.
14. Which adhesive is commonly used for vinyl flooring?
- A. Epoxy cement
B. Asphalt mastic
C. Latex primer
D. White glue
- Answer: A. Epoxy cement.
15. When is bracing necessary for a drywall wall?
- Answer: Diagonal bracing is required every 25 feet for any drywall wall.
16. How should you remove roots from a construction site?
- Answer: Clear roots to 12 inches below grade.
17. What do you obtain by dividing watts by amps?
, - Answer: Volts.
18. What are the most common roofing accidents observed on the job?
- Answer: Falls.
19. Which of the following is NOT classified as a type of wood block flooring?
- A. Parquet
B. Wood mosaic
C. Wood tile
D. All of the above
- Answer: C. Wood tile.
20. Where is lightweight concrete most appropriately used?
- A. Curb and gutter
B. Second-floor decking
C. First-floor slab on grade
D. Footings
- Answer: B. Second-floor decking.
21. Which tool is suitable for carrying grout needed to fill a small hole?
- A. Hawk
B. Poling board
C. Spot board
D. Mason's scutch
- Answer: C. Spot board.
22. Which type of pipe is NOT suitable for handling industrial wastes?
- A. Cast iron
B. Schedule 40 ABS DWV
, C. Extra strength vitrified clay
D. Copper
- Answer: D. Copper.
23. Where is a fire wall necessary?
- 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
- Answer: D. A separation wall between a dwelling and an attachment.
What is the minimum clearance between rough ground 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 significant proportions in granular 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.
