2x6 T G Roof Decking Span Table

Two inch decking not less than 40 to be 14 ft.

2x6 t g roof decking span table. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. Roof decking is southern pine as manufactured by s i. Exact material is not real important because we are just trying to get a relative feel for the situation and the point i m trying to make. Minimum length is limited to 75 of the span length i e for 8 ft.

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. Decking is machined to a single or double tongue and groove evis pattern. For example made up of 3 plies of 1x6 s with the middle board is offset width wise so it forms a t g in the total thickness. Storey lumber co inc.

Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. 2x6 douglas fir tongue and groove decking as one of the hardest and most dense of the softwood species douglas fir makes a practical as well as a beautiful addition to your home. To get a feel for what your engineer was trying to achieve try this experiment. See figures 1 and 2 lengths decking pieces may be of.

There are also several laminated decking products which span longer distances and or carry heavier loads. It s a structural decking as opposed to just being aesthetic. And longer not more than 10 to be less than 10 ft. But the 2015 irc included a new one table r507 5 that will make it easy for deck builders to spec a joist size for a given span and joist spacing.

Plus splices don t always need to land on a supporting rafter. Haven t seen the laminated one before but 2x6 t g is fairly common in that world. I ve only ever seen it in timber frames for roof decking and flooring where joists rafters purlins are far apart 4 plus. View joist rafter tables.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. The table includes spans for common lumber species used for deck framing like southern pine douglas fir hem fir redwood. Maximum moisture content is 19 for 2 x 6 3 x 6 and 4 x 6. Not more than 1 to be 4 to 5 ft.

Frequently used for loft flooring and roof decking the uniquely straight grain and reddish orange color of douglas fir provides eye catching appeal wherever it is. Remember that you need a whole different framing system when you start talking about 4 5 or 6 deck spans. You talked about 2x6 t g roof decking on 4x8 rafters with 2 3 8 lag screws through each 2x6 and into each rafter. It is nominal 2 x 6 3 x 6 or 4 x 6 in 1 or 2 grade and kiln dried.

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.