#LVL SPAN TABLES INSTALL#
#LVL SPAN TABLES VERIFICATION#
#LVL SPAN TABLES SOFTWARE#
#LVL SPAN TABLES CODE#

White Paper: Code Requirements for Prefabricated Wood I-JoistsĪPA, AWC and WIJMA jointly developed this paper that describes the basic code recognition for prefabricated wood I-joists and the need for product certification in compliance with the codes. White Paper: Basis of IRC Membrane Protection ProvisionsĪPA, AWC and WIJMA jointly developed this paper that describes the history, background and intent of the IRC provisions for fire protection of floors as well as the methods used for establishing equivalence and compliance with these fire protection requirements. Certification and inspection of products treated with fire-protective coatings are outside the scope of APA. Technical Topics TT-126: Applicability Of APA Trademarks On Engineered Wood Products Surface-Coated With Fire Protective CoatingsĬontains Q&A concerning fire protective coatings. 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

#LVL SPAN TABLES VERIFICATION#

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.

#LVL SPAN TABLES SOFTWARE#

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.

#LVL SPAN TABLES INSTALL#

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).

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