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
Composites
Solid Wood
Pulp and Paper
Panels
Engineered
Lumber
Softwood
Wood/Non-wood
Wood Based
Wood/Cement
Wood/Plastic
Particleboard
MDF
Plywood
OSB
LVL
OSL
Glulam
Hardwood
Treated
Glued
Finger joined
Edge glued
Pulp
Paper
Mechanical
Chemical
Boards
Dimension
Timber
MSR
Engineered Wood
Products
I-Beams
Trusses
CLT

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. Roof Trusses  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

30. Roof Trusses
Canadian Wood Council

31. 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.

32. Cross-Laminated Timber
Structurlam

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