General contractor exam

In a post tensioned Beam what is the minimum size bar used to support the beam? - correct answer-#4 Bar What is the minimum height between finished floor and joist in the kitchen is 48" on center? - correct answer-7 FT How thick does a load bearing masonry need to be on a single story building? - correct answer-6 inches What chemical is used for high heat concrete - correct answer-retarder when mechanical equipment is on the roof, how far from the edge of the roof should a warning line be if the equipment is running parallel to the roof edge - correct answer-6 feet what is the vertical distance between screws on gypsum board on an interior wall framed 24 inches on center - correct answer-12 inches what is the required thickness of a head and bed joints in a glass masonry? - correct answer-1/4 inch thickness when wide square edge boards are being for board and batten siding, how should the batten strips be nailed - correct answer-to only one siding boards what is the maximum slope on the ground before a stepped foundation is required? - correct answer-10%