1. Oriented Strand Lumber
TimberStrand
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 strips
Strips coated with glue and aligned parallel to each other
Cured by microwave heating

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

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

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

9. Reduction of natural variability
Solid 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 - Parallam
Trus 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 hardwoods
Dimensions 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 pressing
High pressure steam
Mat of strands (unconsolidated)
Perforated platen

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

17. TimberStrand™ LSL - header

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

19. TimberStrand™

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

21. Wood Products Taxonomy
Solid 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 LVL
Web 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 Timber
More 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 Timber
Vertical wall member and horizontal floor members.
Different thickness panels possible.
Laminations can be of different thickness and quality.

31. Cross-Laminated Timber
Structurlam

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

33. Cross-Laminated Timber on UBC Campus
Earth Science Building
Bioenergy Research and Development Facility