C-39 Roofing Trade Practice Test 1 (Practice questions for the CSLB C -39 Roofing Exam ) Questions With Complete Solutions Composition flashing (base flashing) should be fastened with: hhCorrect Answers hhOne- inch solid cap -head nails or Nails driven theough tin disks Pitch pockets or pitch boxes: hhCorrect Answers hhAre not recommended because they require extensive maintenance Reinforced concrete can be used as a structural deck. Which of the following is a correct statement? hhCorrect Answer s hhSome moisture will remain in concrete decks even after the surface is dry Roofing insulation and membranes must be protected from latent moisture in concrete decks. In northern climates, this is usually accomplished with: hhCorrect Answers hhA vapor reta rder or A venting sheet Steel decks should be at least _______ or heavier. hhCorrect Answers hh22g Insulation applied to steel roof decks before the roof membrane is installed should be applied: hhCorrect Answers hhIn two separate layers where insulation thickness permits The top flanges of a steel roof deck should be installed: hhCorrect Answers hhPerpendicular to the roof slope The maximum deflection allowed for a steel deck is: hhCorrect Answers hh1/4" per 100 feet If the steel decks must be spot -welded to structural steel, puddle welds _______ or larger in diameter are recommended. They should be made on washers and spaced at least _______ on center. hhCorrect Answers hh1/2 inches ... 12 inches If thermosetting insu lation is used over structural decks, the density should be: hhCorrect Answers hh18 to 22 pounds per cubic foot The correct density for thermosetting insulation is accomplished by: hhCorrect Answers hhCompacting Thermosetting insulation is compacted in two l ayers if the total thickness is greater than: hhCorrect Answers hh6 inches Thermosetting insulative fills must be protected from latent moisture in roof decks. Which of the following procedures is recommended? hhCorrect Answers hhInstall base -ply vapor barrie r and Install wood nailers at all perimeters and Install wood nailers at all roof projections
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