Nail Laminated Timber Deck
Nlt is most commonly utilized for floor and roof systems though it can also be used for walls elevator shafts and stair shafts.
Nail laminated timber deck. Nail laminated timber nlt or nail lam is a century old construction material that is undergoing a design renaissance. C clips are commercially available and should be sized and installed to manufactuers recommendations. Nail laminated timber nlt nail laminated timber nlt or nail lam is created by fastening individual dimensional lumber stacked on edge into one structural element with nails. But in fact there is a much older technology for building with wood that warehouses and factories were built out of 150 years ago with a fancy new name.
This value may be adjusted depending on the quality and condition of the deck timber. The typical nail laminated timber decks on most state owned bridges in good condition should be rated with a bending capacity of 1 15 ksi no. Nail laminated timber nlt. Nail laminated timber nlt is an old method of construction with a range of modern opportunity to create compelling architecture.
Tall wood buildings like t3 minneapolis have used nlt as floor and roof panels atop glulam beams. Nail laminated timber nlt is a mass timber product created by turning dimensional lumber on edge and mechanically fastening the laminations together with nails. 1 better douglas fir larch before factoring f. Carriage bolt and hardware shall meet that shown in the construction.
Part of the family of mass timber panel products nail laminated timber nlt is mechanically laminated to create a solid structural element. Timber bridge nail laminated deck design c clip detail n t s. Conclusion a good inspection and load rating program will help to ensure that bridges are safe for. Steel stringers with timber decks fs is the 1 federal agency with timber bridges.
4 why do we inspect and load rate bridges in the. This design consisted of 2 to 3 inch thick treated planks with widths from 8 inches to 14 inches. Nail laminated timber or nlt. In addition to being used in floors decks and roofs nail lam panels have been used for timber elevator and stair shafts.
An alternative product can be fabricated by using a minimum 2 x 2 x 3 16 steel plate. To zero they could eliminate the transverse deck. Thus was born the nail laminated longitudinal slab span deck nail laminated deck this transformation in deck design represented a major development in the modern timber bridge. Nlt nail laminated timber is a mass timber panel system which can be used for floor wall and roof structures.