Ibc Roof Sheathing Thickness

Uniform load deflection limitations 1 180 of span under live load plus dead load 1 240 under live load only.

Ibc roof sheathing thickness. Fasteners for asphalt shingles shall be galvanized stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 2 67 mm shank with a minimum 3 8 inch diameter 9 5 mm head of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 1 mm into the roof sheathing. Flashing shall be installed at wall and roof intersections at gutters wherever there is a change in roof slope or direction and around roof openings. Fasteners shall comply with astm f 1667. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process.

1 inch 25 4 mm 1 pound per square foot 0 0479 kn m2. Where flashing is of metal the metal shall be corrosion resistant with a thickness of not less than 0 019 inch 0 483 mm no. Roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7. Underlayment shall be attached using metal or plastic cap nails with a head diameter of not less than 1 inch 25 4 mm with a thickness of at least 32 gauge sheet metal.

The thickness of the deck shall be 7 16 of an inch to 5 8 of an inch thick and fastened using 8d common nails 10d box or power driven nails. If panel is not at least 24 wide measured perp to strength axis then prescriptive requirements have not been met. 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. Where the roof sheathing is less than 3 4 inch 19 1 mm thick the nails shall penetrate through the sheathing.

Prescriptive values from this table apply to panels 24 inches or wider. Look at ibc table 2304 7 3 footnote a. Thickness of the sheet i would require blocking to insure it s integrity as. The ibc code further states in section 1609 5 1 roof deck that the deck must be designed and installed in accordance with asce 7.

Wood structural panel sheathing shall be not less than 15 32 inch 12 mm thick and shall be installed in accordance with figure a3 5 or a3 6.