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what is a tji floor joist

by Alicia Spencer II Published 3 years ago Updated 2 years ago

TJI–TRUSS JOIST P/S

TJI CHORD DEPTH CHORD WIDTH 16" O.C. MAX SPAN PIECES
TJI-110 9-1/2" 1-3/4" 15' 5.55
TJI-210 9-1/2" 2-1/16" 15' 9" 5.90
TJI-230 9-1/2" 2-5/16" 16' 2" 7.40
TJI-110 11-7/8 1-3/4" 17' 10" 6.30
May 6 2022

Full Answer

How deep can you cut into a TJI joist?

This guide features TJi®joists in the following sizes: Flange Widths: 1¾", 21⁄16", 25⁄16", and 3½" depths: 9½", 117⁄8", 14", and 16" For deeper depth TJi® joists, see the Weyerhaeuser deep epth TJi®Joist guide, #TJ-4005, or contact your Weyerhaeuser representative.

What is the best wood for floor joists?

  • southern yellow pine.
  • Red oak.
  • Douglus fir.
  • White ceder.
  • Pine – white.
  • Spruce sitka.
  • Hard maple.

How do I choose the best insulation for floor joists?

Insulate Basement Rim Joists

  • Insulate the joists: Cut the strips to size. Cut rigid foam insulation into strips with a table saw or a circular saw. ...
  • Caulk around openings. Run a bead of acrylic caulk around each section of foam to form an airtight barrier. Fill gaps larger than 1/4 in. with expanding foam sealant.
  • Figure A: Insulated Rim Joists

When to use steel floor joist?

  • Clear spans up to 33’
  • Hole sizes range from 4-1/4” oval to 10” round based on member depth
  • Superior strength permits wider o.c. ...
  • Pre-cut to your exact specifications—no waste
  • Available in 7-1/4”, 8”, 9-1/4”, 10”, 11-1/4”, 12” and 14” deep members
  • Flange sizes include 1-3/4” and 2”
  • Eliminates soffit framing

More items...

What does TJI joist stand for?

TJI stands for Truss Joist I-Joist. The engineered wood I-joist can be used for joists or trusses, are stronger and lighter than dimensional lumber of similar widths, and can span greater distances. The truss-joists are engineered to resist twisting and warping, and won't shrink like dimensional lumber.

What is a TJI floor system?

Engineered to provide strength and consistency, Weyerhaeuser's Trus Joist® TJI® joists are one of the most fundamental components of a solid, high-performance floor system. And with their light weight and long lengths, TJI joists are faster and easier to install than traditional framing, which can save time and money.Apr 24, 2015

How far can TJI joists span?

[7] Maximum on-center spacing for bracing of TJI® 110 is 32″ o.c.; for bracing of all other TJI® joists use 36″ o.c. [8] Maximum clear span limited by scope of 2018 IRC Table 802.5.

Are TJI joists stronger than 2x10?

Aside from providing longer spans, I-joist and TRIFORCE® floor systems are superior in strength and precision to solid sawn lumber. They are stiffer, lighter and more easily maneuverable. They also provide a bigger nailing surface to attach the floor membrane than the commonly used 2 x 10.Jul 13, 2017

How do you set TJI floor joists?

1:392:58Detail #A2 / A2W - Trus Joist EWP Floor Installation Guide - YouTubeYouTubeStart of suggested clipEnd of suggested clipThem to the plate using 1/8 d nail through each side of the bottom flange. And into the plate atMoreThem to the plate using 1/8 d nail through each side of the bottom flange. And into the plate at least one and a half inches from the end of the TGI. Joist.

What are TJI joists made of?

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.

Can I-joist span 30?

Joists are available in several depths and lengths and superior strength allows them to span up to 30 feet (TRIFORCE span tables).Aug 14, 2019

How do you cut a TJI joist?

How To Quickly Cut TJI JoistsCut Each Joist One At A Time. The slowest way of cutting these joists is breaking apart the shipping package and pulling out each joist one by one, measuring them and then cutting them. ... Cut An Entire Bundle At Once. ... Let Them Run Wild. ... Order Pre-Cut TJI Joists.Jul 24, 2011

Can you drill through TJI?

Big holes in the middle are fine. In fact, you can put holes that go almost all the way from the bottom to the top of the joist. TJI, for example, say you just need to leave 1/8″ of webbing remaining! For people used to looking at dimensional lumber, these holes look very, very wrong… but they're actually fine.Sep 28, 2021

Are TJI joists more expensive?

Truss joists are much more expensive than engineered I-beams. They are also substantially heavier, as they are all solid lumber plus metal plates.

What is the strongest floor joist?

Since knots and other defects weaken wood, higher grades of lumber (designated as clear, select, or #1) are considered stronger than lower grades. Higher grades of lumber, however, are also much more expensive. Lumber graded as #2 is the most common choice for floor joists and other framing lumber.

Can I use 2x12 for floor joists?

A floor joist can span nearly 26' in the most extreme cases. A select douglas fir 2×12 supporting a 30 psf live load and 10 psf dead load, spaced at 12” will have the greatest span length.

What are the advantages of TJI joists?

TJI’s offer many benefits compared to traditional dimensional lumber joists including: almost no twisting or warping, very little dimensional shrinkage, stiffness and strength. Framing a floor with TJI’s is really no different than framing with dimensional lumber.

How wide are TJI flanges?

TJI’s are available in many different sizes ranging from 9-1/2″ to 16″ deep and flanges 1-3/4″ to 3-1/2″ wide.

What is a PSL beam?

Parallam PSL Beams are the workhorse of beams for most buildings that we construct. Occasionally we’ll use the Microlams ( LVL Beam) but PSL beams have great capacity and available sizes. Most lumber yards can help you size the beams to meet local and State building codes, otherwise you should consult with an engineer.

What is a joist?

Joists are horizontal supports that span from wall to wall, wall to beam, or beam to beam. Several popular options include solid lumber, LVL, wood I-beams, steel joists and open web floor trusses. Let’s examine three of these materials.

What are the impacts of joists?

You might think it’s strange, but joists can impact lots of things like floor plan, fire safety, what materials can be installed for flooring surfaces, and even indoor air quality. In this article, I’ll review a few different types of joists, and you can decided if they’re important to you too.

Why do I like TJI web trusses?

Score one for the environment. The only reason I like TJI’s more is that web trusses will flex more, and I’ve really come to value a floor with limited deflexion.

What is an open web floor truss?

Open web floor trusses are constructed with 2 x 4’s on top and bottom with a sort of “web” in between secured with metal plates. The open space is ideal for running wires, pipes and utilities. I have these in my home, and I use the space for extra storage as you can see in the picture.

Is solid lumber still common?

Traditional solid lumber joists are still very common. They were the default for some time, but in the early ’90s builders started using engineered products more and more. Initial costs for solid lumber joists are (usually) cheaper than engineered solutions but this benefit is cancelled out by the costs associated with limited span distances and increased framing members.

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