What this book covers The Peerless Building Moving / Demolition (C-21) Study Guide Book prepares you for the trade portion of the California CSLB contractor license exam. 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 C21 classification. Book chapters On-site & off-site work Code information Electricity Blasting Traffic control Fire extinguishers & fire safety Plans & specifications Cal/OSHA & jobsite safety Asbestos Mathematics Plumbing Construction equipment & tools (cranes) Sample questions What kind of fire extinguisher should be used on an asphalt roof fire?A. Foam · B. Soda acid · C. Carbon dioxide · ✓ D. Dry chemical 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 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
