CBO BC Training Quiz 46

451. Where preservative treated wood is used in locations where it cannot dry, the maximum moisture content is?

9 Percent 15 Percent 19 Percent 21 Percent

452. Fire retardant treated wood shall have a flame spread index of not more than?

150 200 75 25

453. What is the minimum thickness of wood sheathing on 24” centers with edge support?

1/2" 3/8” 3/4" 5/8"

454. What is the rating of sheathing placed on 28” centers without edge support?

16/24 18/28 22/42 32/16

455. What does 32/16 rating mean for structural wood sheathing?

32” maximum centers for siding, 16” maximum span for use in siding if two layers are used 32” maximum centers for roof only if edge protected, 16” maximum span for flooring when used with underlayment 32” maximum centers for flooring, 16” maximum span for roofing 32” maximum centers for roof, 16” maximum span for flooring

456. What is the fastening schedule for stud to top plate using toenailed 8D nails?

4 3 2 6

457. Wood Structural Panels (WSP) nailed on the roof shall have its edges nailed with what maximum spacing?

6” 4" 8" 12"

458. 1/2" fiberboard exterior wall sheathing shall have its edges stapled on what maximum spacing?

6" 4" 3” 2"

459. Be familiar with multiple types of question like the former one from the 2015 IBC Table 2304.10.1

Be familiar with the 2015 IBC Table 2304.10.1 Be familiar with the 2015 IBC Table 2304.10.1 Be familiar with the 2015 IBC Table 2304.10.1 Be familiar with the 2015 IBC Table 2304.10.1 (Choose this one)

460. Wood joists in a crawl space shall be how far above dirt?

15" 16" 18" 17”

CBO BC Training IBC Quiz 46

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