1 Oriented Strand LumberTimberStrand Parallam Ellis  Uses long strands of wood  Wide variety of dimensions possible  Parallam, 2.3mx1cm softwood veneers - high-end structural uses  TimberStrand, 30cmx2cm hardwood flakes - window frames, door stock, wall studs

2 Parallam® Elements: Strips of wooden veneer (1/8-1/10” thick, 1/2” wide, up to 8’ long) Product Width up to 12 inches Dimensions: Depth up to 21 inches Length up to 66 feet Applications: Beams, columns, headers

3 Parallel Strand Lumber

4 Parallam® PSL – production overview2 1 3 4 6 5

5 Parallam® Veneer clipped into long stripsStrips coated with glue and aligned parallel to each other Cured by microwave heating

6 Parallam® PSL – short strand eliminationWood 487: Glued Wood Products Parallam® PSL – short strand elimination 11. EngineeredWood

7 Parallam® PSL – strand orientationWood 487: Glued Wood Products Parallam® PSL – strand orientation wig-wag table trough 11. EngineeredWood

8 Parallam® PSL – continuous, microwave pressWood 487: Glued Wood Products Parallam® PSL – continuous, microwave press G H J 11. EngineeredWood

9 Reduction of natural variabilitySolid wood Variability is at its greatest level. Laminated Veneer Lumber Variability is reduced in one plane. Parallam® Variability is reduced in two planes.

10 Oriented Strand Lumber - ParallamTrus Joist

11 Parallam® PSL

12 TimberStrand™ Elements: Strands of aspen, cottonwood (1/20” thick, 1” wide, 12” long) Product Width 1½ -3½ inches Dimensions: Depth 9½-14 inches Length up to 48 feet Applications: Beams, wall studs, headers

13 TimberStrand™ Long strands of hardwoodsDimensions smaller than Parallam Not as strong as Parallam Cured by steam pressing Very dimensionally stable

14 TimberStrand™ LSL – manufacturing overview1 2 3 6 4 5

15 Steam-injection pressingHigh pressure steam Mat of strands (unconsolidated) Perforated platen

16 TimberStrand™ LSL - rimboardWood 487: Glued Wood Products TimberStrand™ LSL - rimboard 11. EngineeredWood

17 TimberStrand™ LSL - header

18 TimberStrand™ LSL – stair stringersWood 487: Glued Wood Products TimberStrand™ LSL – stair stringers 11. EngineeredWood

19 TimberStrand™

20 TimberStrand™ LSL – light framingWood 487: Glued Wood Products TimberStrand™ LSL – light framing 11. EngineeredWood

21 Wood Products TaxonomySolid Wood Softwood Lumber Boards Dimension Lumber Timber Machine Stress Rated Glued Wood Finger Joined Edge Glued Treated Hardwood Composites Panels Particleboard Medium Density Fibreboard Plywood Oriented Strandboard Engineered Lumber Composites Glue Laminated Timber Laminated Veneer Lumber Oriented Strand Lumber Wood Products Taxonomy Engineered Wood Products I - Beams Cross Laminated Timber

22 I - Beams Elements: Flange- MSR lumber, LVL, Parallam Web - OSB, Plywood Product Width 1½ -3½ inches Dimensions: Depth 9 ½-24 inches Length up to 66 feet Applications: Floor joists, roof joists

23 Wood I-Beams

24 Wood I-Beams – manufacturing overview

25 I - Beams Trus Joist

26 I- Beam constitution Flange MSR lumber TimberStrand LVL LVLWeb OSB OSB Plywood OSB

27 Wood I-Beams Flange = MSR lumber Flange = TimberStrand LSL Web = Plywood Web = Oriented Strandboard

28 Wood I-Beams

29 Cross-Laminated TimberMore technical content and images on CLT Laminations of selected dimensional lumber. Each adjacent layer is oriented with grain perpendicular. Analagous to plywood made from solid wood rather than veneer.

30 Cross-Laminated TimberVertical wall member and horizontal floor members. Different thickness panels possible. Laminations can be of different thickness and quality.

31 Cross-Laminated TimberStructurlam

32 Cross-Laminated Timber Nine-storey residential building (wooden construction)(Waugh Thistleton Architects)

33 Cross-Laminated Timber on UBC CampusEarth Science Building Bioenergy Research and Development Facility