When using Weyerhaeuser's Forte® Software it's important to keep in mind that the deflection criteria are a set of deflection limits applying to structural members. They are defined by building codes or personal preference. These deflection limits are intended to ensure user comfort and serviceability requirements to prevent excessive cracking of finish materials.
The improved deflection limits built into our software may be more restrictive than the minimum values required by building codes. Field experience has proven that these improved limits provide better framing systems and more satisfied customers. For a more accurate measure of floor performance please see TJ-Pro™ Rating.
For more information on Deflection, click on link below: