CSLB B LICENSE GENERAL CONTRACTOR EXAM | questions and answers

If unused mortar stiffens due to hydration of cement, what must you do? - Answer - Discard the mortar What minimum time must you wait before caulking or grouting new tiles? - Answer - 24-48 Hours How long should you wait before installing tile on a shower pan? - Answer - 24 Hours Unstable dry rock, angular gravel, sandy loam, and cohesive soils having compressive strengths greater than 0.5 and less than 1.5 tons/sq ft (tsf), are typical examples of: - Answer - Type-B Soils If 65 street lights are fed by a 2275 volt series circuit, what is the voltage across each light? - Answer - 35V In a series circuit, the total voltage is divided equally. For safety reasons, the maximum simple slope of an excavation, up to 20 ft deep, in Type-B soil is: - Answer - 1:1 (45°) A Pittsburgh joint is used in: - Answer - HVAC ductwork The drain for a pressure relief valve on a water heater should be extended to: - Answer - The outside of the building What is the minimum slope toward the drain of a shower pan? - Answer - 1/4" per foot (2%) What is the diameter of #3 rebar? - Answer - 3/8" If a vendor fails to provide an MSDS, you have the right to call: - Answer - Cal/OSHA or DOSH When installing a door jamb, you need shims at: - Answer - Both hinge and strike sides, three on each side. Which of the following is used to adhere vinyl floors? A. Epoxy cement B. Asphalt mastic C. Latex primer D. White glue - Answer - Epoxy cement