An engineered wood joist, more commonly known as an I-joist, is a product designed to eliminate problems that occur with conventional wood joists. Invented in. 11 7/8″ BCI (2 5/16″ LVL Flange), 16″ BCI (2 9/16″ LVL Flange) The advantage of this is that each BCI joist corresponds to a particular. BCI® Joists are specially constructed I-joists with flanges made from VERSA- LAM® laminated veneer lumber and a revolutionary flange profile.

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Depths can range from 9. An engineered wood joistmore commonly known as an I-joistis a jjoist designed to eliminate problems that occur with conventional wood joists. Languages Deutsch Edit links. By using this site, you agree to the Terms of Use and Jojst Policy. Missed nails and glue setting too fast can lead to an uneven or squeaky floor. A similar situation occurs where the I-joist crosses a main beam. After sizing the webs and flanges, they are assembled with water-resistant glue by pressing the web into the top and bottom flange.


Eastern BCI® Joists

Building materials Engineered wood. The lightweight nature of I-joists makes them more vulnerable to fire than dimensional lumber.

The biggest notable difference from dimensional lumber is that the I-joist carries heavy loads with less lumber than a dimensional solid wood joist.

Common mistakes made with installing I-joists include cutting or chiseling the flange, improperly sized joist hangers, improper nailing and wrong-sized nails. The web is typically made from plywoodlaminated veneer lumber, or oriented strand board.

From Wikipedia, the free encyclopedia. The joish joist depth must match the I-joist size. Retrieved from ” https: The flange can be made from laminated veneer lumber or solid wood finger-jointed together for ultimate strength. After assembly, the I-joist is end-trimmed and heat-cured or left at room temperature to reach approximately equilibrium moisture content.

BCI® Joists – Boise Cascade

The disadvantage is very rapid structural failure when directly exposed to fire, reducing the time available for residents to escape and increasing the danger to firefighters. The most common mistake is misplacing or improperly sizing holes in the web, which can compromise the joist’s strength, potentially leading to structural failure. Sizes vary according to the I-joist’s intended load and span. The advantage of I-joists is they are less likely to bow, crown, twist, cup, check or split as would a dimensional piece of lumber.


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Mismatches can strain the joist. This page was last edited on 23 Decemberat National Fire Protection Association Journal. The intended use for an I-joist is for floor and roof joists, wall studs and roof rafters in both residential and commercial construction.

Fundamentals of Building Construction.

WESTERN BCI® JOISTS (Boise Cascade, LLC) | Free BIM object for Revit | BIMobject

An I-joist has two main parts, the web and flange. Charcoal biochar Firelog Firewood Pellet fuel Wood fuel.

Invented injoixt I-joist is an engineered wood product that has great strength in relation to its size and weight. I-joists require correct installation. It is grooved on one side to receive the web.

I-joists’ dimensional soundness and little or no shrinkage help eliminate squeaky floors. Views Read Edit View history.