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Wood Products Taxonomy THEN NOW Wood Products Taxonomy WOOD Composites Solid Wood Engineered Panels Lumber Softwood Hardwood Composites Glued Treated Lumber Lumber (ELC) Wood/ Wood LVL Boards Finger joined CCA treated Hardwood Non-wood Based Wood/ Particleboard OSL Dimension Edge glued Fire retardant Cement MDF Timber Glulam Plywood MSR Engineered Wood Products OSB I-Beams Roof trusses “A New Taxonomy of Wood Products” 1996 David Cohen, Simon Ellis, Robert Kozak and Bill Wilson Canadian Forest Service FRDA II Working Paper 96.05, Victoria, BC, 56pp Commercial introduction for major wood products Laminated Strand Lumber Parallel Strand Lumber CCA-treated Lumber Wood I-Beam Lumber Laminated Veneer Lumber Light Frame Trusses Glue Laminated Lumber MSR Lumber 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 Plywood Particleboard Waferboard Medium Density Fiberboard Panels Oriented Strand Board Wood Products • Primary – most (but not all) are structural products used in construction of residential and non-residential buildings • Secondary – non-structural products used in the finishing and furnishing of these buildings • Tertiary – support services including equipment manufacture, software development, education, marketing Wood Products Taxonomy WOOD Composites Solid Wood Engineered Panels Lumber Softwood Hardwood Composites Glued Treated Lumber Lumber (ELC) Wood/ Wood LVL Boards Finger joined CCA treated Hardwood Non-wood Based Wood/ Particleboard OSL Dimension Edge glued Fire retardant Cement MDF Timber Glulam Plywood MSR Engineered Wood Products OSB I-Beams Roof trusses Boards • 1” thick material, width – increments of 2” • finished, non-structural • markets are: export, industrial, home center • NA production likely to increase Boards BC Wood Specialties Dimension Lumber • 2x4, 2x6, 2x8 construction lumber • majority of lumber produced in North America • NA production grown 1.4% p.a. over last 20 years • bulk commodity product with little specialization Dimension Lumber Canadian Wood Council Timber • minimum dimensions 5.5” • mainly for export market • production is decreasing • post and beam construction • high-end product Timber Canadian Wood Council Machine Stress Rated 1950f - 1.7E • mechanically graded lumber • structural end-uses • value-added lumber product • use is increasing in traditional and new markets Wood Products Taxonomy WOOD Composites Solid Wood Engineered Panels Lumber Softwood Hardwood Composites Glued Treated Lumber Lumber (ELC) Wood/ Wood LVL Boards Finger joined CCA treated Hardwood Non-wood Based Wood/ Particleboard OSL Dimension Edge glued Fire retardant Cement MDF Timber Glulam Plywood MSR Engineered Wood Products OSB I-Beams Roof trusses Finger joined • longer lengths produced from shorter stock • allow defects to be reduced • structural or non-structural • utilized in lumber, glulam, I-beams • markets are increasing Finger Jointed Lumber Canadian Wood Council BC Wood Specialties Edge-glued • edge-lamination of wood • wider widths from narrow material • stable-panel produced • industrial and finished retail products Edge Glued Panels BC Wood Specialties Glulam Finger joint Individual laminations • “glue-laminated” lumber • uses high quality, stress-rated “lamstock” • used as beams and columns • structural, architectural uses Glue Laminated Beams Canadian Wood Council Wood Products Taxonomy WOOD Composites Solid Wood Engineered Panels Lumber Softwood Hardwood Composites Glued Treated Lumber Lumber (ELC) Wood/ Wood LVL Boards Finger joined CCA treated Hardwood Non-wood Based Wood/ Particleboard OSL Dimension Edge glued Fire retardant Cement MDF Timber Glulam Plywood MSR Engineered Wood Products OSB I-Beams Roof trusses Particleboard Single layer (homogeneous) 5-layer 3-layer Graduated • non-structural panel product • uses waste particles from other processes • surface is smooth but edges are not • used mostly for industrial purposes Medium Density Fiberboard (MDF) • non-structural panel product • uses mechanically produced wood fibres • superior machinability to particleboard • markets are growing rapidly Plywood Crossband Face Grain direction Core • structural panel product • uses high quality softwood veneers • manufactured in 4x8ft sheets • market is steady or declining Plywood Canadian Wood Council Oriented Strand Board • uses flakes or strands (approx. 20x100x1mm) • aspen, poplar, pine, mixed hardwoods used • produced as large panels (up to 12x24ft) • structural panel as replacement for softwood plywood • market is growing rapidly Oriented Strand Board Structural Board Association Canadian Wood Council Wood Products Taxonomy WOOD Composites Solid Wood Engineered Panels Lumber Softwood Hardwood Composites Glued Treated Lumber Lumber (ELC) Wood/ Wood LVL Boards Finger joined CCA treated Hardwood Non-wood Based Wood/ Particleboard OSL Dimension Edge glued Fire retardant Cement MDF Timber Glulam Plywood MSR Engineered Wood Products OSB I-Beams Roof trusses Laminated Veneer Lumber (LVL) • veneers glued with grain running parallel to each other • veneers graded prior to assembly • used on flat or on edge • used as I-beam flanges, beams and joists Laminated Veneer Lumber Trus Joist Oriented Strand Lumber (OSL) • uses long strands of wood • wide variety of dimensions possible • Parallam, 2.3mx1cm veneers, high-end structural uses • TimberStrand, 30cmx2cm flakes, window frames, door stock, wall studs Parallel Strand Lumber (Parallam) Wood Products Taxonomy WOOD Composites Solid Wood Engineered Panels Lumber Softwood Hardwood Composites Glued Treated Lumber Lumber (ELC) Wood/ Wood LVL Boards Finger joined CCA treated Hardwood Non-wood Based Wood/ Particleboard OSL Dimension Edge glued Fire retardant Cement MDF Timber Glulam Plywood MSR Engineered Wood OSB Products I-Beams Roof trusses I-Beams flange web • flanges - lumber, MSR lumber, LVL, OSL • webs - plywood, OSB • replace wide, solid pieces of wood • used as floor joists, roof rafters I - Beams Trus Joist Roof trusses Top chord Web Bottom chord Truss plate • small dimension, short lengths of wood combined to produce large-sized, long length support members • held together with truss plates • often custom-designed using MSR lumber • pitch-chord or parallel-chord Trusses Canadian Wood Council .
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