General contractor question with correct answers

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 gro