Tongue And Groove Roof Decking Spans

Not more than 1 to be 4 to 5 ft.

Tongue and groove roof decking spans.

Timber tongue and groove decking is a specialty lumber product constituting an important part of modern timber construction that can be used for many applications to provide an all wood appearance. Two inch decking not less than 40 to be 14 ft. Nominal three and four inch decking is especially well adapted for use with glued laminated arches and girders and is easily and quickly erected. 6 tongue and groove roof decking.

I ve only ever seen it in timber frames for roof decking and flooring where joists rafters purlins are far apart 4 plus. I am looking to space rafters at 72 however i cannot find any information on diaphragm strength of the t g decking. Irc table r803 1 lists 1 1 2 t g for rafter spans up to 72. Standard or tongue and groove roof decking a tc 112 93 5 4 2 3 four inch decking not less than 25 to be 16 ft and longer with at least 20 equal to or greater in length than the maximum span not less than 50 to be 15 ft and longer not more than 10 to be 5 to 10 ft not more than 1 to be 4 to 5 ft 5.

It s a structural decking as opposed to just being aesthetic. Tongue and groove wood decking should be installed with the tongue up on sloped roofs and outward in direction of laying on flat roofs. There are two most common features of the wooden t g roof deck type that you can use to identify it. Pattern faces should be down and exposed on the underside.

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. This tongue and groove decking combines appearance grade with unsurpassed quality of finish making them ideal for exposed ceiling applications. The last one is none other but our main topic in this article.

Each piece of 2 thick decking should be toenailed through the tongue and face nailed with one 16d common nail per support. Does anyone have experience using tongue and groove decking for roof sheathing. The material used is graded to southern pine inspection bureau standards and meets the american institute of timber construction standards for tongue and groove heavy timber decking. It is machined with a single tongue and groove a v joint face and is end matched allowing the use of random length pieces.

2 x 6 nominal southern pine lumber. If pieces are for controlled random layup odd or even lengths are permitted and the minimum lengths based on board feet percentages shall be as follows. Each piece of 3 and 4 thick decking should be toenailed at each. The first is the tongue which location is on one edge of the material board and the second is the groove which is on the other side.

And longer not more than 10 to be less than 10 ft. Tongue and groove decking provides the customer with an outstanding solution for roof and subfloor structure where exposed to the lower level.