1. Engineered Wood Products
Title page
Monica A. Snow
Associate Professor
Wentworth Institute of Technology

2. Engineered Wood Products
Categories
Panel Products
Plywood
Oriented Strand Board (OSB)
Glulam
Engineered Joists
I -Joists
Open web joists
Structural Composite Lumber (SCL)
Parallel Strand Lumber (PSL)
Laminated Veneer Lumber (LVL)
Laminated Strand Lumber (LSL)

3. Engineered Wood Products
Panel Products Plywood
-- plies of veneer (odd number)
-- cross-laminated lay-up
-- grain of faces oriented in the longitudinal
direction
Source: APA-The Engineered Wood Association

4. Engineered Wood Products
Panel Products Oriented Strand Board
-- strands (long wide flakes)
-- outer layers oriented in the
longitudinal direction
-- central layers either cross oriented or random alignment
Source: APA-The Engineered Wood Association

5. Engineered Wood Products
Glulam
-- solid-sawn structural
lumber
-- face bonded
Source: APA-The Engineered Wood Association

6. Engineered Wood Products
Engineered Joist
I-Joist
I Joists (in place)
flange
web
flange
Source: R. Jonckheere- The Calculated Wood

7. Engineered Wood Products
Engineered Joist
Open web joist
Source: Open Joist 2000

8. Engineered Wood Products
Structural Composite Lumber (SCL)
Laminated Veneer Lumber (LVL)
Parallel Strand Lumber (PSL)
Laminated Strand Lumber (LSL)
Source: Trus Joist, A Weyerhaueser Business

9. Engineered Wood Products
Laminated Veneer Lumber: LVL
-- plies of veneer
-- grain of all plies oriented in the same
direction
Source: APA-The Engineered Wood Association
Source: Boise Cascade

10. Engineered Wood Products
LVL
Material formed by bonding wood veneer with a phenol-resorcinol based adhesive.
Veneer aligned with similar orientation with the length of the member.
Source: Trus Joist, A Weyerhaueser Business

11. Engineered Wood Products
Parallel Strand Lumber: PSL
-- long strands cut from veneer
-- continuous feed
process
-- billet product
Source: R. Jonckheere- The Calculated Wood

12. Engineered Wood Products
PSL
Material formed from rotary peeled wood veneer strands coated with a phenol-formaldehyde based adhesive.
Strands aligned with similar orientation with the length of the member.
Source: Trus Joist, A Weyerhaueser Business

13. Engineered Wood Products
Laminated Strand Lumber: LSL
-- strands
(longer than OSB strands)
-- logs need not be peeled
-- billet product
Source: APA-The Engineered Wood Association

14. Engineered Wood Products
LSL
Material formed from sliced wood strands and bonded with an isocyanate based adhesive.
Strands aligned parallel to the length of the member.
Source: Trus Joist, A Weyerhaueser Business