R903 1 Roofing Spacing Plywood

Minimum 420 fb 660 000 e.

R903 1 roofing spacing plywood.

Weather exposure for wood shingles shall not exceed those set in table r905 7 5 1. Roof decks shall be covered with approved roof coverings secured to the building or structure in accordance with the provisions of this chapter. Where roof framing with a specific gravity g 0 49 is used spacing of. Minimum 600fb 1 150 000 e.

Flashing is not required at hip and ridge. Table 1 roof sheathing fastening schedulea b c d e 8d common 0 131 x 2 1 2 inches or ring shank 0 135 x 2 1 2 inches except where noted for exposure b enclosed buildings roof framing spaced 24 inches o c. Drains or scuppers of section r903 4 1 to be added to an existing roof. Spacing between shingles shall not be less than 1 4 inch to 3 8 inch 6 mm to 10 mm.

Minimum 270 fb 340 000 e. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. Minimum thickness of lumber roof sheathing. Fasteners for wood shingles shall be corrosion resistant with a minimum penetration of 1 2 inch 13 mm into the sheathing.

Where flashing is of metal themetalshallbecorrosion resistantwithathickness of not less than provided in table r903 2 1. Or less roof fastening zone wind main sheathing to gable overhang velocity roof end wall framingg eaves 3 second panel 123 2 3 2 3. Flashings shall be installed at wall and roof intersections wherever there is a change in roof slope or direction and around roof openings. Fasteners for asphalt shingles shall be galvanized steel stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 3 mm shank with a minimum 3 8 inch diameter 9 5 mm head complying with astm f1667 of a length to penetrate through the roofing materials and not less than 3 4 inch 19 1 mm into the roof sheathing.

1 inch 25 4 mm. Spacing between shingles shall be not less than 1 4 inch to 3 8 inch 6 4 mm to 9 5 mm. Where the roof sheathing is less than 3 4 inch. Fasteners for asphalt shingles shall be galvanized steel stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 3 mm shank with a minimum 3 8 inch diameter 9 5 mm head complying with astm f1667 of a length to penetrate through the roofing materials and not less than 3 4 inch 19 1 mm into the roof sheathing.

Weather exposure for wood shingles shall not exceed those set in table r905 7 5.