Advantages of Using Engineered Wood I-Joists

All sectors are influenced by innovation, including the structural wood systems manufacturing sector. With the advent of engineered wood products, residential and commercial building construction has been able to save considerable time. I-joists are one development that has made these advantages possible.

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Learn about the benefits of using this type of floor joist in your construction or renovation projects.

What is a wood I-joist?

Floor joists support flooring, furniture and people. There are different types of wood floor joist, each with unique features suited to different construction projects.

Here, we&#;ll concentrate on wood I-joists. They are named for their shape: made from one OSB panel flanked tops and bottom by two 2×3 or 2×4 lumber flanges, I-joists look like a capital letter I.

Advantages of wood I-joists

It&#;s easy to see why wood I-joists are so popular in modern construction, once you are aware of all the benefits they offer.

1. Superior stability and strength

The structure of I-joists makes them capable of supporting a lot of weight without compromising their integrity. Their unique shape effectively distributes weight along the entire length of the joist, reducing the risk of warping, bending or sagging with time.

Wood I-joists are capable of safely supporting heavy loads including furniture, equipment and even vehicles without showing signs of structural fatigue. They can be used for residential, commercial or industrial construction projects.

I-joists made of engineered wood are resistant to the deformation caused by moisture, meaning they can be used successfully under various conditions. This ability to maintain their shape contributes to long-term building stability.

2. Greater reach

I-joists are strong and have greater span than traditional lumber. This saves builders money in two ways. First, you&#;ll need fewer support beams, which means spending less on building materials. Second, your structure will be lighter if you need to use fewer parts, which means building smaller foundations and again saving on costs.

3. Quick to install and versatile

I-joists are manufactured according to standard designs and can be easily integrated into your construction system, which means contractors can install them quickly and efficiently. Their uniform size also simplifies handling on site, which can also help speed up construction.

With Usihome, you have the option of having your floor joists delivered with pre-cut holes for cables and plumbing. This feature makes the construction process simpler, as you can easily integrate various elements without drilling.

I-joists are lighter than lumber and easier to handle. They are available in various dimensions, so you can count on finding what you need for a variety of projects.

Contact Usihome for top quality wood I-joists

Are you planning on using wood I-joists for your construction project? Now&#;s the time to contact Usihome!

We have been leaders in the manufacture of prefabricated wood structures since . At Usihome, you can choose from a wide range of wood floor joists. We also build roof trusses and prefabricated walls.

Contact one of our representatives via our online form or at 855-595-.

A High-Performance Advantage

I-Joist Basics

I-joists are strong, lightweight, "I" shaped engineered wood structural members that meet demanding performance standards. I-joists are comprised of top and bottom flanges, which resist bending, united with webs, which provide outstanding shear resistance. The flange material is typically laminated veneer lumber (LVL) or solid sawn lumber, and the web is made with plywood or OSB. The robust combination of structural characteristics results in a versatile, economical framing member that is easy to install in residential and light commercial projects.

Common I-Joist Applications

I-joists are used extensively in residential floor and roof framing. They are ideal for long spans, including continuous spans over intermediate supports. Because I-joists are straight and true, it's easier for builders to avoid crowning and maintain a level framing surface. In addition, wood I-joists are typically stocked and readily available in depths that meet the needs of residential framing.

Common Depths

9-1/2", 11-7/8", 14", 16". Flange widths vary from 1-1/2" to 3-1/2"; long lengths are readily available.

Common Uses

I-joists are popular for floor and roof framing. Many APA member-manufacturers have software design tools; contact the manufacturer (at right) for more information. 

For more i joist beaminformation, please contact us. We will provide professional answers.

APA PRI-400

APA Performance Rated I-joists (PRIs) are manufactured in accordance with APA PRI-400, Performance Standard for Residential I-joists. 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. APA PRIs are recognized through ICC-ES ESR-.

The APA Mark of Quality

APA trademarks appear only on products manufactured by APA member mills. 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.

I-Joist Publications
 

Includes information on span ratings, installation details, cantilever designs, architectural specifications and engineering design properties for APA Performance Rated I-Joists.

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Resource Library

Access a complete list of APA publications about I-joists in APA's Resource Library.

Fire Protective Assemblies for Wood I-Joist Floors

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.

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Technical Topics TT-015: Wood I-Joist Floors, Firefighters and Fire

A discussion of the durability and safety of wood I-joist floor assemblies in structure fires. Includes APA&#;s recommendation to increase the fire endurance of all floor-joist assemblies based on the International Building Code.

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Technical Topics TT-126: Applicability Of APA Trademarks On Engineered Wood Products Surface-Coated With Fire Protective Coatings

Contains Q&A concerning fire protective coatings. Certification and inspection of products treated with fire-protective coatings are outside the scope of APA.

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White Paper: Basis of IRC Membrane Protection Provisions

APA, 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.

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White Paper: Code Requirements for Prefabricated Wood I-Joists

APA, 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.

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White Paper: Fire Protection of I-Joist Floors with Factory-Applied Solutions

APA developed this paper that describes the basic fire protection requirements for prefabricated wood I-joists with factory-applied fire protection solutions for compliance with the codes.

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