Tongue And Groove Roof Decking Spans

Pattern faces should be down and exposed on the underside.

Tongue and groove roof decking spans. Tongue groove structural decking structural decking also known as roof decking should not be confused with lumber intended for residential and non residential outdoor decks. It s a structural decking as opposed to just being aesthetic. 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. 2 x 6 nominal southern pine lumber.

Does anyone have experience using tongue and groove decking for roof sheathing. I am looking to space rafters at 72 however i cannot find any information on diaphragm strength of the t g decking. 6 tongue and groove roof decking. This tongue and groove decking combines appearance grade with unsurpassed quality of finish making them ideal for exposed ceiling applications.

Two inch decking not less than 40 to be 14 ft. Tongue and groove decking provides the customer with an outstanding solution for roof and subfloor structure where exposed to the lower level. 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.

Not more than 1 to be 4 to 5 ft. 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. 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. There are two most common features of the wooden t g roof deck type that you can use to identify it.

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. Tongue and groove wood decking should be installed with the tongue up on sloped roofs and outward in direction of laying on flat roofs. Each piece of 3 and 4 thick decking should be toenailed at each. Nominal three and four inch decking is especially well adapted for use with glued laminated arches and girders and is easily and quickly erected.

I ve only ever seen it in timber frames for roof decking and flooring where joists rafters purlins are far apart 4 plus. Standard structural decking patterns are 2 nominal tongued and grooved t g and 3 and 4 double t g products available with vee or eased edges to meet discriminating architectural requirements. Each piece of 2 thick decking should be toenailed through the tongue and face nailed with one 16d common nail per support. Irc table r803 1 lists 1 1 2 t g for rafter spans up to 72.

Just wondering if anyone has used this decking to act as the roof diaphragm. The last one is none other but our main topic in this article.