Wood I Beam joists resist shrinking and twisting, and they deliver high dimensional stability with consistent depth, stiffness and strength characteristics. They are ideal for complex framing plans, and they often allow greater interior height because electrical conduit, plumbing and most HVAC can be passed through the web.
Wood I Beam Joist Performance Features
| Performance Feature | Advantage |
| Wide-flange joists | More mass, less vibration, for a firmer-feeling floor; provides wider gluing and nailing surfaces that cut installation time |
| Dimensionally stable | Quieter floors, minimal squeaks and stiffer floor performance for fewer callbacks |
| Wider spacing, fewer pieces to install | Saves time, labor and materials cost |
| Can be field altered | Easy to cut and install with no special tools required |
| More level floor system | Helps prevent cracks in rigid floor materials such as marble, slate and tile |
Wood I Beam joists feature FiberStrong® Oriented Strand Board (OSB) webs fitted into high-grade solid sawn lumber or Laminated Veneer Lumber (LVL) flanges. Wide-flange joists deliver greater load capacity and support longer spans.
- GPI Series Wood I Beam joists use LVL lumber flanges up to 3-1/2" wide.
- WI Series Wood I Beam joists use sawn lumber flanges up to 3-1/2" wide.
Wood I Beam joists are available in standard lengths of 24', 28', 32', 36', 40', 44' and 48'. Lengths up to 60' may be special ordered.
GPI Series - LVL Flanges
| Series | Flange | Available Depths |
| GPI 20 | 1-3/4" LVL flange width | 9-1/2", 11-7/8" and 14" |
| GPI 40 | 2-5/16" LVL flange width | 9-1/2", 11-7/8" and 14" |
| GPI 65 | 2-7/16" LVL flange width | 11-7/8", 14" and 16" |
| GPI 90 | 3-1/2" LVL flange width | 11-7/8", 14" and 16" |
WI Series - Sawn Lumber Flanges
| Series | Flange | Available Depths |
| WI 40 | 2-1/2" lumber flange width | 9-1/2", 11-7/8" and 14" |
| WI 60 | 2-7/16" lumber flange width | 11-7/8", 14" and 16" |
| WI 80 | 3-1/2" lumber flange width | 11-7/8", 14" and 16" |
