What’s included Learn the material: Concrete (C-8) Study Guide Book Pass the test: Concrete (C-8) Practice Exam What this covers Per the state's classification, a C-8 contractor "forms, pours, places, finishes and installs specified mass, pavement, flat and other concrete work; and places and sets screeds for pavements or flatwork." This printed book covers the subjects the state tests. See the official CSLB C-8 classification. Sample questions — Try our free practice test Concrete is kept moist to enhance:A. Cooling · B. Heating · C. Water tightness · ✓ D. Curing Proper curing will help produce concrete that is:A. Hard · ✓ B. Water tight · C. Prestressed · D. Frozen A material that may be used for curing is:A. Asphalt paper · B. Plaster board · C. Plywood · ✓ D. Waterproof paper or plastic A 6 cu. yd. load of concrete weighs 22,842 lbs. What is the unit weight of the concrete?A. 121 lb./cu. ft. · ✓ B. 141 lb./cu. ft. · C. 282 lb./cu. ft. · D. 564 lb./cu. ft. 6 × 6 – 10 × 10 welded-wire fabric has:A. 10-inch wire spacing · ✓ B. unequal wire spacing · C. 6-inch wire spacing · D. No. 6 gauge transverse wires A caisson is:✓ A. a cast-in-place pile · B. an underwater footing · C. a continuous footing · D. none of the above
