Wood I Beam Joists

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-flanges 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.
WO 60 Series Wide Open Wood I Beam joists use 2-1/2" solid lumber flanges.
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. WO Series joists are available in standard lengths of 14', 16', 18', 20', 22' and 24'.
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"
WO Series - Solid Lumber Flanges
Series Flange Available Depths
WO 60 2-1/2" lumber flange width 16"
For important product fire, safety, and use information, go to gp.com/safetyinfo .