CSLB B TRADE QUESTIONS AND ANSWERS

Lightweight concrete is BEST used at the: A. curb & gutter B. second floor decking C. first floor slab on grade D. footings - Answer-B. Second floor decking. It is costly, but very strong. It offers greatest advantage when used for upper stories because it reduces the strength requirements for the supporting framework. What tool do you normally use for striking joints? A. haulk B. trowel C. jointer or jointing tool D. stiff brush - Answer-B. A trowel is normally used for striking joints. What is a bush-hammer used for? A. install bushings on a wheel B. roughen surfaces of hardened concrete C. straighten metai sheeting D. pull objects with impact action - Answer-B. Roughen the surface of hardened concrete. It is a hardened steel tool with a serrated face or several rows of pyramid-shaped points. It is used to roughen the surface of hardened concrete to provide better bonding of fresh concrete poured over it. Who decides if 3,000 psi strength concrete is fit to pour? A. structural engineer B. supplier C. concrete contractor D. building inspector - Answer-A. Structural engineer. psi = pounds per square inch Concrete should be poured against: A any wood siding B. cedar or redwood siding only C. metal flashing D. metal form material - Answer-D. Metal form material. When metal forms are not used, only "Form Grade" plywood, not siding, should be used in the wood forms.