Nail Laminated Timber Bridge Deck

Timber bridge nail laminated deck design c clip detail n t s.

Nail laminated timber bridge deck. This design consisted of 2 to 3 inch thick treated planks with widths from 8 inches to 14 inches. Nail laminated timber floor timber deck systems are great for rural settings such as trails forest roads. Nail laminated deck this transformation in deck design represented a major development in the modern timber bridge. Nail laminated timber deck bridges represent an economical and convenient solution for rural low volume roads but a need exists to develop effective railing systems for this type of roadway struct.

This type of structure has a laminated wood deck where of laminations placed a seriesare edgewise and oriented in the direction of the span of the bridge. Tall wood buildings like t3 minneapolis have used nlt as floor and roof panels atop glulam beams. Carriage bolt and hardware shall meet that shown in the construction. 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.

Bridge types deck types solid sawn planks non interconnected glued laminated panels. One bridge has a glued laminated deck and the other has a stress laminated deck. Timber bridge rating program r4 in 2009 revised and enhanced. An alternative product can be fabricated by using a minimum 2 x 2 x 3 16 steel plate.

These examples are intended to help designers understand the key issues as they undertake wood highway bridge design. Nail laminated timber nlt or nail lam is a century old construction material that is undergoing a design renaissance. Nlt nail laminated timber is a mass timber panel system which can be used for floor wall and roof structures. Along with rustic areas they are great for areas with low traffic and limited weight capacity.

Weather protection heat resistance and mold growth are all prevented by treating the timber. Longitudinal glued laminated deck panels longitudinal nail laminated deck longitudinal spike laminated deck. Its structural performance and design elegance come together to create inspiring spaces in many historical buildings as well as modern new projects of all sizes. C clips are commercially available and should be sized and installed to manufactuers recommendations.

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