Engineered Wood Products

P3 Joists

The P3 Joist® is an “I”-shaped engineered wood structural member designed for use in residential and commercial floor and roof construction.

P3 Joists® are prefabricated using SPF MSR lumber flanges and OSB web, which are bonded together with exterior-type adhesives. P3 Joists® are limited to a L/480 maximum live load deflection for residential and non-residential floor applications.

P3 Joists® are identified by their depth followed by their series name PJI, and by a designation such as 40 which relates to the joist strength and stiffness. Our P3 Joists® are manufactured to strict tolerances with the following characteristics.

All our P3 Joists® are manufactured in conformance with ASTM D5055.

Characteristics

• Flanges are MSR 2×3’s and 2×4’s.
• Webs are OSB, and all are classified as Exposure 1 or Exterior and are 3/8” in thickness or greater.
• All P3 Joist are assembled using exterior‑type adhesives that meet ASTM D 2559 and ASTM D 7247.
• P3 Joist are available in eight depths: 9-1/2”, 11-7/8”, 14”, 16”, 18”, 20”, 22” and 24”.
• P3 Joist of the same depth are manufactured with various flange widths; flange width is an important design consideration when specifying hangers.
• P3 Joist are manufactured up to 64’ in length. These lengths are cut to commonly used lengths such as 16’ to 36’ in 2’ increments for jobsite delivery. Check local supplier for availability.

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