Lumber used for structural framing members, such as studs, floor joists, and rafters, is graded using
A) only visual inspection.
B) only machine grading.
C) Both visual and machine grading must be used to arrive at lumber's grade.
A) only visual inspection.
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Indicate whether the statement is true or false
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a. 2 b. 6 c. 10 d. 12
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