CSLB Building Moving and Demolition (C-21): Study Guide and Online Practice Exam + Law and Business Study Guide and Online Practice Exam

What’s included

• Learn the material: Building, Moving & Demolition (C-21) Study Guide Book
• Pass the test: Building, Moving & Demolition (C-21) Practice Exam
• Required for all California contractor applicants: Law & Business Study Guide Book and Law & Business Practice Exam

What this covers

Per the state's classification, a C-21 contractor "raises, lowers, cribs, underpins, demolishes and moves or removes structures, including their foundations." This printed book covers the subjects the state tests. See the official CSLB C-21 classification.

Sample questions — Try our free practice test

1. What kind of fire extinguisher should be used on an asphalt roof fire?
   A. Foam · B. Soda acid · C. Carbon dioxide · ✓ D. Dry chemical
2. Which of the following fire extinguishers cannot be used to put out a Class B fire?
   A. Foam · B. Ordinary dry chemical · ✓ C. Gas cartridge · D. Carbon dioxide
3. Which type of extinguisher contains a solution of aluminum sulfate and bicarbonate of soda?
   ✓ A. Foam · B. Ordinary dry chemical · C. Gas cartridge · D. Carbon dioxide
4. For explosive blast, which can't be used as the source of current?
   A. a blasting machine · B. light circuit · C. power circuit · ✓ D. storage batteries
5. Pedestrian protection must be in place prior to demolishing a building. What protection is required, if the height of construction being removed is more than 8' high?
   A. a distance of more than half of the construction fence height · B. a distance of less than 6' canopy and fence · ✓ C. a distance of not more than a quarter the height of the construction fence · D. a safe walkway around the structure of 4 feet in width
6. All glazed openings shall be removed a minimum of ___ the working level, when a hazard occurs from glass fragmentation.
   ✓ A. 1 floor below · B. 1 floor above · C. a floor equal to · D. none of the above
7. [Law & Business] A construction contract was written containing the following time estimates to complete the job. It would take 2 days to ready the construction site and then the job itself would be done in 2 phases. The first phase would take 10 days and the second would take 7 days, but these 2 phases could be at the same time. It would take one additional day at the end to clean up. How many days would it take to complete this project?
   A. 15 days · ✓ B. 13 days · C. 11 days · D. 7 days
8. [Law & Business] A contractor receives a notice from the Employment Development Department (EDD) that one of his former employees has filed a claim for Unemployment Insurance (UI) benefits against his reserve account. He/she may:
   A. call EDD within 5 days and protest · ✓ B. protest, in writing, within 10 days of the mailing date of the notice · C. protest, in writing, within 30 days of the mailing date · D. protest, in writing, within 45 days of the mailing date