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The term Engineered Wood Product (EWP) has been commonly used for only about the last ten years.Not only does it describe the relatively new manufactured wood products such as Laminated
Veneer Lumber (LVL), Parallel Strand Lumber (PSL), Wood I-Joists and trusses produced from a number of different wood components, it also refers to Glued Laminated Timber (Glulam). It should probably include both
plywood and Oriented Strand Board (OSB) since these products are not only components of the afore described products, but are themselves structural elements of diaphragms and shear walls. Timber Systems includes
all of the following EWPs in its structural timber assemblies:
Glued laminated timber (Glulam) in Douglas Fir and Spruce-Pine Specie groups
Laminated Veneer Lumber (LVL) in 45mm thickness for single or multi-ply applications
Parallel Strand Lumber (PSL) in 45, 67, 89, 133 and 178mm thicknesses
Wood I-Joists up to 406mm deep from stock, and up to about 1m deep on custom order
Light metal plate connected wood trusses
Open web trusses with wood chords and metal webs
Plywood and OSB
These products utilise wood fibre extremely efficiently, and since they are manufactured from either veneers or small dimension lumber, smaller, faster growing trees form the main material source . |
