![]() Includes APA’s recommendation to increase the fire endurance of all floor-joist assemblies based on the International Building Code. Technical Topics TT-015: Wood I-Joist Floors, Firefighters and FireĪ discussion of the durability and safety of wood I-joist floor assemblies in structure fires. Learn about several options that enhance the fire performance of I-joist floor systems and comply with the International Residential Code (IRC) by visiting the I-Joist Fire Assemblies page. Includes information on span ratings, installation details, cantilever designs, architectural specifications and engineering design properties for APA Performance Rated I-Joists.Īccess a complete list of APA publications about I-joists in APA's Resource Library.įire Protective Assemblies for Wood I-Joist Floors The mark signifies that product quality is subject to verification through APA audit-a procedure designed to assure manufacture in conformance with APA performance standards or the standard shown in the mark. APA PRIs are recognized through ICC-ES ESR-1405.ĪPA trademarks appear only on products manufactured by APA member mills. This Performance Standard provides an easy-to-use table of allowable spans for applications in residential floor construction, allowing designers and builders to select and use I-joists from various member manufacturers using just one set of span tables. ![]() Many APA member-manufacturers have software design tools contact the manufacturer (at right) for more information.ĪPA Performance Rated I-joists (PRIs) are manufactured in accordance with APA PRI-400, Performance Standard for Residential I-joists. ![]() I-joists are popular for floor and roof framing. Flange widths vary from 1-1/2" to 3-1/2" long lengths are readily available. In addition, wood I-joists are typically stocked and readily available in depths that meet the needs of residential framing.ĩ-1/2", 11-7/8", 14", 16". Because I-joists are straight and true, it's easier for builders to avoid crowning and maintain a level framing surface. They are ideal for long spans, including continuous spans over intermediate supports. I-joists are used extensively in residential floor and roof framing. The robust combination of structural characteristics results in a versatile, economical framing member that is easy to install in residential and light commercial projects. The flange material is typically laminated veneer lumber (LVL) or solid sawn lumber, and the web is made with plywood or OSB. I-joists are comprised of top and bottom flanges, which resist bending, united with webs, which provide outstanding shear resistance. I-joists are strong, lightweight, "I" shaped engineered wood structural members that meet demanding performance standards. USDA Forest Service Forest Products Laboratory.Engineered Wood Technology Association (EWTA).These features make them a great choice for any construction project. Laminated wood beams also offer advantages over other types of beams, such as increased strength and improved resistance to weathering. This makes it easy for builders to choose the right beam for their project and ensure that their structure is strong and up to code. They provide a clear and concise representation of the relationship between beam size and the weight it can bear. ![]() Laminated wood beams span tables provide a comprehensive overview of the different beam sizes that can be used in any construction project. But what are these span tables, and how do they help you in your project? Read on to learn more about laminated wood beams span tables, and why they are an important part of any construction project. As more and more people opt for wooden homes, laminated wood beams have become increasingly popular for their strength and durability. Laminated wood beams span tables are an essential tool for any construction project. ![]()
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