Irc 2012 Roof Pitch

Roof pitch 13 12 to 12 12 or greater table r301 6 r802 3 table 3.

Irc 2012 roof pitch.

Clay and concrete roof tiles can only be installed on roof slopes of 2 1 2 12 or greater. 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. It brings together all building plumbing mechanical fuel gas energy and electrical provisions for one and two family residences. These rafter spans are for 2 lumber a ground snow load of 30 psf the ceiling not attached to rafters and a dead load of 10 psf.

Where the roof sheathing is less than 3 4 inch 19 mm thick the. All other data can be found in the. Posted on by. Truss design drawings prepared in conformance to section r802 10 1 shall be provided to.

The existing roof covering is wood shake slate clay cement or asbestos cement tile. 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. The existing roof or roof covering is water soaked or has deteriorated to the point that the existing roof or roof covering is not adequate as a base for additional roofing. 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.

This means for every 12 horizontal units the roof must rise a minimum of two and one half vertical units. 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 10 mm head astm f 1667 of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 mm into the roof sheathing. 3 the existing roof has two or more applications of any type of roof covering. 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.

Roof geometry wood truss requirements 2012 irc section r802 10 addresses the requirements for wood metal plate connected wood trusses. 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. R802 10 1 truss design drawings. Minimum roof slope roof pitch r905 3 2.

Rafter span table and 2012 irc requirements.