Square -edged floor sheathing requires an additional panel over it, which is typically a 1/4-in.-thick sanded plywood or hardboard, to make it a two-layer (combination) floor sheathing. Why is (additional) panel overlayment required?

What will be an ideal response?


The panel overlayment covers the open joint spaces between the long edges of panels.

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To transmit information, systems using power-line carrier technology make use of _____.

a. dead legs b. wiring c. the metal portion of a building’s structure d. GFCI devices and ground wiring

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Drywall fasteners should be installed ______ to make finishing easier.

a.below the surface b.flush c.slightly raised d.with a nail set

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The pressure in a gasoline engine combustion chamber can be as high as ________

A) 1000 PSI B) 400° C) Both A and B D) Neither A nor B

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What does the word toxicity mean?

What will be an ideal response?

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