Answer the following statement(s) true (T) or false (F)

All workers on a scaffold must wear hard hats.


ANS: T

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When subtracting two numbers it is sometimes necessary to borrow from the number in the adjacent column.

Answer the following statement true (T) or false (F)

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Which grade of Glulam must meet only structural requirements and is a rough-grade product?

A) Framing B) Architectural C) Industrial D) Premium

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Larger SDR numbers on a plastic pipe indicate _____ inside pipe diameter and _____ pipe walls

A) smaller; thinner B) smaller; thicker C) larger; thinner D) larger; thicker

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Which statement is correct regarding the cleaning of base metals before welding?

a. All metals should be cleaned before welding. b. It is not necessary to clean new metal. c. Metals only need to be cleaned if they show signs of corrosion. d. Metals only need to be cleaned if they are painted or coated.

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