Q.1.The MINIMUN length drywall screw for installing 1/2 inch gypsum board to wood studs.A.52/4 inches B.14/4 inches C.11/4 inches D.13/4 inches 1 / 4
Q.2. What is the MINIMUM breaking strength required of safety belt lanyards ?A.4,340pounds B.5,400 pounds C.5,453 pounds D.5,460 pounds 2 / 4
Q.3. What is the MINIMUM clearance that combustible insulation MUST other heat-producing devices ?A.4 inch B.1 inch C.8 inch D.9 inch 3 / 4
Q.4. What is the MAXIMUM flame spread index for insulation materials ?A.25 B.65 C.43 D.76
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