Depending on various design factors and which TJI joist is used, the span can vary from 13’-7” for a TJI110 at 24” centers to 36’-1” for a TJI560 at 12” centers. When determining span, refer to the manufacturer’s specifications, the local building code, or the calculations of a Structural Engineer. TJI vs I-Joist
Joist
A joist is a horizontal structural member used in framing to span an open space, often between beams that subsequently transfer loads to vertical members. When incorporated into a floor framing system, joists serve to provide stiffness to the subfloor sheathing, allowing it to function as a horizontal diaphragm. Joists are often doubled or tripled, placed side by side, where conditions warrant, such as wher…
Full Answer
What is a TGI beam called?
What is a TGI beam? TGI's are the floor joist that span your foundation to create your floor. After they are installed they are covered by plywood. The TGI is a common name for TJI. TJI stands for Truss Joist I-beam. They are also called wood I's. Click to see full answer. Also asked, what does tji stand for? Also Know, what is LVL beam?
What is the span of a TJI joist?
Depending on various design factors and which TJI joist is used, the span can vary from 13’-7” for a TJI110 at 24” centers to 36’-1” for a TJI560 at 12” centers. When determining span, refer to the manufacturer’s specifications, the local building code, or the calculations of a Structural Engineer.
What are the dimensions of a TJI diaphragm?
TJI® Closest On-Center Spacing per Row(1)(2)Diaphragm Design Information 8d (0.113" x 2½"), 8d (0.131" x 2½"), 10d (0.128" x 3"), 12d (0.128" x 3¼") 10d (0.148" x 3"), 12d (0.148" x 3¼"), 16d (0.135" x 3½") 16d (0.162" x 3½") Equivalent Nominal Framing Width Maximum Allowable Seismic Design Capacities(4)
What is the maximum cantilever length for a TJI®joist?
See Section A of cantilever table on page 11 TJI®joists may be cantilevered 5" to 24" when supporting roof load, assuming: ■simple or continuous span ■L 1≤ L 2 ■minimum backspan = 2x cantilever length 2'-0" 5" to 24" Roof truss span 40 psf live load L2 1
How far can you span TJI joists?
[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.
How far can a TJI 210 span?
TJI–TRUSS JOIST P/STJICHORD DEPTH16" O.C. MAX SPANTJI-23011-7/8"19' 2"TJI-36011-7/8"20' 11"TJI-56011-7/8"23' 8"TJI-21014"21'10"6 more rows
What size lumber can span 24 feet?
What size beam to span 24 ft:- as per general thumb rule and guidelines, a 4 nailed 2×18 or 4-2×18 or 8×18 size of wood beam can allow to span 24 feet. Thus, for a 24 foot span, you will need atleast 4-2×18 or 8×18 size of wood beam.
What is a TGI beam?
Trus Joist® TJI® joists are a key part of making a high-performance floor. The dimensional stability of TJI joists help them resist warping, twisting and shrinking that can lead to squeaky floors.
How far can 11 7 8 I-joist span?
Span refers to the length of the I-joist. The L/480 table with a 40 per square foot live load and a 20 per square foot dead load with a depth of 11 7/8 inches will give you spans according to joint weight. With these factors, the lightest joist will have a maximum span of 17 feet, 8 inches.
Can floor joists span 24 feet?
What size floor joist to span 24 feet:- as per general rules and guideline, a 2×12 (2-by-12) size of floor joists made of southern yellow pine, graded as #1 can allows joist spans up to 24 feet for a live load of 30 pounds per square foot and dead load of 10 pounds per square foot when spaced 16 inches apart.
What size beam do I need to span 25 feet?
LVL beam size for a 25 foot span:- as per general thumb rule, for a 25 foot span, size of LVL beam or GLULAM should be 12-14 inches deep and 4 inches wide, thus you need something like a 12-14″ GLULAM or LVL to span upto 25 feet used for residential building or projects.
What beam can span 20 feet?
What size beam to span 20 ft:- as per general thumb rule and guidelines, a 4 nailed 2×16 or 4-2×16 or 8×16 size of wood beam can allow to span 20 ft. Thus, for a 20 foot span, you will need atleast 4-2×16 or 8×16 size of wood beam.
What size LVL do I need for a 22 foot span?
LVL beam size for a 22 foot span:-as per general thumb rule, for a 22 foot span, size of LVL beam or GLULAM should be 10 to 12 inches deep and 3 inches wide, thus you need something like a 10-12″ GLULAM or LVL to span upto 22 feet and can use simple 2×14 dimensional lumber at 16″ apart from centre as floor joists used ...
How far can an engineered joist span?
Joists are available in several depths and lengths and superior strength allows them to span up to 30 feet (TRIFORCE span tables).
How much can you cut out of a TGI?
All holes larger than 1 ½” must be spaced at least 12” from the edge of the hole to the inside face of bearing. Although cutting holes larger than 1½” in TJI® joist webs near end bearings is not permitted in the table, we recognize that this condition does arise.
What does TJI lumber stand for?
TJI. Trus Joist I-Joist (engineered floor and roof joist; trademark of Trus Joist, a Weyerhaeuser Business) Copyright 1988-2018 AcronymFinder.com, All rights reserved.
How deep are IB joists?
Our joists are available in depths from 9 ½ to 16 inches and lengths up to 52 feet for Residential consideration and depths from 18 to 24 inches for Commercial. IB MAX-CORE I-Joists are recognized as an innovative solution to the building industry's floor and roof framing needs.
How far can I go with 2x12 joists?
Those maximum distances vary based on joist strength, depth, and on-center spacing. According to TJI's span table, switching to deeper 11-7/8 inch joists (a nominal 2x12), even when spaced at 19.2 inches on-center, enable you to go as long as 17 feet, 4 inches and still achieve L/480.
How long can a truss be?
Also, how long can trusses be? Trusses can span up to approximately 90', although very long truss spans are more challenging to deliver, erect, brace and install properly. While longer trusses may be “wobbly” as they are lifted off of the ground and onto the bearing walls, once they are properly braced, the truss system is extremely strong.
How to measure for TJI joist?
1. Using Table A, Table B, or both if required, determine the hole shape/ size and select the TJI®joist and depth. 2. Scan horizontally until you intersect the correct hole size column. 3. Measurement shown is minimum distance from edge of hole to support. 4. DO NOTMaintain the required minimum distance from the end andthe intermediate or cantilever support.
How many nails do I need for TJI 110?
Safety bracing (1x4 minimum) placed at 8' on-center (6' on-center for TJI ®110 joists) and extended to a braced end wall. Fasten at each joist with two 8d (0.113 x 2½") nails minimum.
What is a TJ Pro rating?
Trus Joist® TJ-Pro™ Ratings are generated by a sophisticated computer model designed to predict floor performance and evaluate the relationship betweenthe cost and the “feel” of any given floor system. The methodology is based on extensive laboratory research, more than one million installations, and the combined expertise of some of the best engineers in the field. TJ-Pro™ Ratings go beyond deflection criteria to consider job-specific needs and expectations. In many cases, using TJ-Pro™ Ratings will offer a system that improves performance while actually reducing costs!
How many PCF is plywood?
Based on: Southern pine – 40 pcf for plywood, 44 pcf for OSB
How many points does a TJ Pro have?
How do most people perceive a floor assembly with a TJ-pro™ Rating of 45 points? 84% find it good to excellent.
Can you walk on joists?
DO NOT walk on joists until braced. INJURY MAY RESULT. DO NOT walk on joists that are lying flat. DO NOT stack building materials on unsheathed joists. Stack only over beams or walls.
Do you need a web stiffener for a top mount hanger?
Top mount hanger Web stiffeners required if sides of hanger do not laterally support at least
How long can I-joists span?
I-Joists can span up to a whopping 32' without support, giving custom home builders the ability to create open floor plans that customers demand
What is TJI joist?
All TJI Joists are designed using patented software that designs a floor taylor-made for every home. This software creates a layout and specifies where every single framing member goes. When the material arrives on the jobsite, there is minimal cutting, and carpenters know exactly where every joist goes.
Can TJI joists be cut?
Large holes can be cut in the webbing of TJI Joists, allowing for mechanicals to be easily run and installed. Joists can also be spaced wider than traditional solid sawn joists which allows for quicker and easier installation
What joists are available for TJI 110?
For TJI®110, 210, 230, and 360 Joists
What is a TJI joist?
Engineered to provide strength and consistency, TJI® joists are a key part of our Silent Floor® System. Silent Floor® joists continue to set the standard for residential floor and roof joists. Their strength and long lengths give you the freedom to design the open, spacious floor plans that your customers want. Engineered for dimensional stability and predictable performance, Silent Floor® joists resist warping, twisting, and shrinking.
How many nails do I need for TJI 110?
Safety bracing (1x4 minimum) placed at 8' on-centre (6' on-centre for TJI®110 joists) and extended to a braced end wall. Fasten at each joist with two 8d (0.113" x 2½") nails minimum.
How many rows of fasteners are allowed on a diaphragm?
360 and 5603" 4"(2)6" (1) One row of fasteners permitted (two at abutting panel edges) for diaphragms. Stagger nails when using 4" on-centre spacing and maintain 3⁄8" joist and panel edge distance. For other applications, multiple rows of fasteners are permitted if the rows are offset at least ½" and staggered. (2) Can be reduced to 3" on-centre for light gauge steel straps with 10d (0.148" x 1½") nails.
What is a TJ Pro rating?
iLevel® Trus Joist® TJ-Pro™ Ratings are generated by a sophisticated computer model designed to predict floor performance and evaluate the relationship between the cost and the “feel” of any given floor system. The methodology is based on extensive laboratory research, more than one million installations, and the combined expertise of some of the best engineers in the field. TJ-Pro™ Ratings go beyond deflection criteria to consider job-specific needs and expectations. In many cases, using TJ-Pro™ Ratings will offer a system that improves performance while actually reducing costs!
How many screws are needed for 2x strapping?
1⁄16" Two 2½" screws for 2x_ strapping connections Two 8d (0.113" x 2½") nails or 2½" screws, typical
Can you walk on joists?
DO NOT walk on joists until braced. INJURY MAY RESULT. DO NOT walk on joists that are lying flat. joists. Stack only over beams or walls.
US East
To download our VERSA-LAM ® span and size chart PDFs, click on the links below.
US West
To download our VERSA-LAM ® span and size chart PDFs, click on the links below.
BC Calc
BC Calc ® performs engineering analysis to help our customers size beams, joists, columns, studs and tall walls for their building projects. It is simple to use, yet flexible enough to analyze a variety of common applications. The user enters the member geometry, adds loads, holes and other relevant data and then selects a product for analysis.