Oriented Strand Lumber

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

Ellis

TimberStrand Parallam

Parallam®

Elements: Strips of wooden veneer(1/8-1/10” thick, 1/2” wide, up to 8’ long)

Product Width up to 12 inchesDimensions: Depth up to 21 inches

Length up to 66 feet

Applications: Beams, columns, headers2

Parallel Strand Lumber

Parallam® PSL – production overview

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Parallam®• Veneer clipped into long

strips

• Strips coated with glue and aligned parallel to each other

• Cured by microwave heating

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Parallam® PSL – short strand elimination

Parallam® PSL – strand orientation

wig-wag table

trough

Parallam® PSL – continuous, microwave press

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H J

Laminated Veneer LumberVariability is reducedin one plane.

Parallam®Variability is reducedin two planes.

Solid woodVariability is at its greatest level.

Reduction of natural variability

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Oriented Strand Lumber - Parallam

Trus Joist

Parallam® PSL

Elements: Strands of aspen, cottonwood(1/20” thick, 1” wide, 12” long)

Product Width 1½ -3½ inchesDimensions: Depth 9½-14 inches

Length up to 48 feet

Applications: Beams, wall studs, headers

TimberStrand™

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• Long strands of hardwoods

• Dimensions smaller than Parallam

• Not as strong as Parallam

• Cured by steam pressing

• Very dimensionally stable

TimberStrand™

TimberStrand™ LSL – manufacturing overview

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Steam-injection pressing

Perforated platen

High pressure steam

Mat of strands(unconsolidated)

TimberStrand™ LSL - rimboard

TimberStrand™ LSL - header

TimberStrand™ LSL – stair stringers

TimberStrand™

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TimberStrand™ LSL – light framing

SecondaryWood Products

Furniture

Millwork & Factory-built Housing

Windows & Doors

Cabinets

Wood Products Taxonomy

Engineered WoodProducts

I-Beams

Trusses

CLT

Elements: Flange- MSR lumber, LVL, ParallamWeb - OSB, Plywood

Product Width 1½ -3½ inchesDimensions: Depth 9 ½-24 inches

Length up to 66 feet

Applications: Floor joists, roof joists

I - Beams

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flange

web

Wood I-Beams

Wood I-Beams – manufacturing overview

I - Beams

Trus Joist

I- Beam constitution

FLANGE MSR lumber TimberStrand LVL LVL

WEB OSB OSB Plywood OSB

Wood I-Beams

Flange = MSR lumber Flange = TimberStrand LSLWeb = Plywood Web = Oriented Strandboard

Wood I-Beams

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

Top chord Web

Truss plateBottom chord

Top chord

Bottom chord

Web

Truss plate

Roof Trusses

Canadian Wood Council

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.

Cross-Laminated Timber

Structurlam

(Waugh Thistleton Architects)

Cross-Laminated TimberNine-storey residential building (wooden construction)