Michigan Roofing Exam Questions with Correct and Verified Answers

MICHIGAN ROOFING EXAMAND ANSWERS S S S S




1. The minimum crawl space ventilation required is 1 square foot per each
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square feet of underfloor space without avapor barrier.: 150
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2. A ventilating opening within a crawl space shall be located within
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of each corner of a building.: 3feet
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3. An access opening to a crawl space through a perimeter wall shall be a
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minimumsizeof:16"x24"
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4. According to code, wood beams, rafters, and joists may NOT be notched in the S S S S S S S S S S S S S




middle: 1/3
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5. Truss design drawings shall be provided to the S and approved S S S S S S S S




priortoinstallation.:Buildingoflcial
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6. Trussdesigndrawingsshallinclude::Span,spacing,andloads
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7. When nailing 1/2" O.S.B. board to floor joists, what is the minimum nail size?: 6D
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common
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8. When nailing 1/2" O.S.B.boardtoa floor joist system, what isthemaximum spacing
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ofnailsontheedge?:6inches
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9. When nailing 1/2" O.S.B.boardtoa floor joist system, what isthemaximum spacing
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of nails along the joists?: 12inches
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10. Masonry flashing shall be located .:belowthefirstcourseabove S S S S S S S S S S




grade
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11. Without a vapor barrier, the roof ventilation requirement of the total net free S S S S S S S S S S S S




ventilating area shall not be less than 1 S.F. to
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ventilated.:150S.F.
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12. For roof ventilation, if there is a vapor barrier the net free cross ventilation is
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reduced to 1 square foot to
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13. You are responsible for determining the ventilation requirements for a home under
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construction. If the home has a gable roof and vapor barrier, what is the minimum ratio of
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vent area to total attic space area?: 1:300
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14. A 3,000 square foot roof requires 10 square feet of ventilation. The ventila- tion
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Swill be divided equally between ridge and soffit vent. How many square feet of
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1/ 4
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