What this book covers The Peerless Plumbing (C-36) Study Guide Book prepares you for the trade portion of the California CSLB contractor license exam. Per the state's classification, a C-36 contractor installs, alters, and repairs water supply systems, drainage systems, gas lines, sewers, and plumbing fixtures in residential and commercial structures. This printed book covers the subjects the state tests. See the official CSLB C36 classification. Book chapters Water supply systems Gas systems Materials & fixtures Drainage system Vent system Steam & hot water boilers Cleanouts Welding Tools Swimming pools Blueprint reading Septic tanks & drainfields Safety Mathematics review Sample questions: Try our free practice test Unless listed as flammable-vapor-ignition-resistant, how high above a residential garage floor must a gas water heater’s pilots, burners, and burner-igniter devices be installed?A. 12 inches · B. 18 inches ✓ · C. 24 inches · D. 36 inchesAnswer basis: 2025 CPC §507.13. Under the 2025 California Plumbing Code, what is the maximum permitted distance between gas utilization equipment and its accessible manual shutoff valve?A. 3 feet · B. 4 feet · C. 6 feet ✓ · D. 10 feetAnswer basis: 2025 CPC §1212.6. Of the following, which single-wall appliance vent connection is permitted?A. Horizontally in a plastered partition · B. Vertically through the attic · C. Vertically through the floor to the roof · D. Through the exterior wall to the outer air ✓
