How far can a 12 inch I joist span?
When supporting joists that span 12 feet with no overhang beyond the beam, a double ply beam can span in feet a value equal to its depth in inches. A double 2x12 beam can span 12 feet; a (2) 2x10 can span 10 feet and so on.
How are I joist made?
LP® SolidStart® I-Joists feature an advanced design and tough build for superior performance:
- Combines laminated veneer lumber (LVL) or finger-jointed sawn wood flanges with a web of oriented strand board (OSB) to produce an I-shaped structural member.
- Both materials work together to resist deflection, bending stresses and shear.
- LVL and MSR lumber flanges up to 3-1/2˝ wide for greater stability.
What are I joists?
The I-joist is a manufactured wood joist, constructed of either machine stress rated (MSR) lumber or laminated veneer lumber, that is lightweight and easy to handle but able to carry heavier loads than dimensional wood. These joists include wide flanges that give greater surface area for nailing and more support for floor sheathing.
What is an I joist floor system?
- Reduces floor “bounce”
- Easy to install
- A cheap solution for solving floor movement
How far will a 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.
How much does AI joist cost?
I-Joists, LVL Beams & Glue LamsWe cut custom lengths, use $/ LFTRUSS JOISTS (I-JOIST)$/LF20 FT9 1/2″$5.47$109.4411 7/8″$6.18$123.5316″$8.36$167.1518 more rows•Feb 28, 2022
What is a BLI joist?
BLI joists are manufactured with low-moisture content material ensuring floor systems that are quieter, with greater stability and long-term dependability. Manufacturing quality is monitored by the third-party inspection services of APA- EWS® and backed by a lifetime limited warranty.
How far can a 11 7 8 TJI span?
TJI–TRUSS JOIST P/STJICHORD DEPTH16" O.C. MAX SPANTJI-2309-1/2"16' 2"TJI-11011-7/817' 10"TJI-21011-7/8"18' 8"TJI-23011-7/8"19' 2"6 more rows
Are I-joist cheaper?
I-beams are increasingly taking over in new residential construction. In new construction, it is cheaper to use engineered joists in some cases. For instance, it is possible to use half the number of I-beams compared to 2x10s since I-beams can span further with center support.
Can I make my own I-joist?
1:224:40What is an I-Joist and How are They Made - Did You Know? - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe veneers are laminated together 14 layers thick under extreme heat and pressure this laminatingMoreThe veneers are laminated together 14 layers thick under extreme heat and pressure this laminating oven is nearly 100 yards long and produces a continuous sheet of flange stock.
What is a BCI 90?
Boise Cascade® BCI® 90 Joist. SKU: BCI901178. BCI® Joists are specially constructed I-joists with flanges made from VERSA-LAM® laminated veneer lumber and a revolutionary flange profile which prov... Depth. 11-7/8"
What does TJI stand for?
TJIAcronymDefinitionTJIThis Just InTJITransitional Justice Institute (University of Ulster; Ireland)TJIThe Journey Inside (Intel education software)TJITribal Judicial Institute (University of North Dakota; Grand Forks, ND)3 more rows
Which is better L 360 or L 480?
I prefer to go with a span chart that uses L/480 for the live load. That means L/360 is implied for the total load deflection, and it will result in much better floor performance. With roof trusses, the typical deflection limit is L/240 for live load, and L/180 for total load.
Are I-joists stronger than timber?
Are I joists stronger than timber? I joists are specifically designed to offer strength in areas that dimensional lumber is incapable of. They can span greater distances, and are considered to be 50% stiffer than dimensional timber under traditional frame spacing.
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 su...
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 2012 and 2015 International Residential...
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 fl...
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...
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...
Alberta Truss
Manufacturer of floor and roof trusses for commercial, residential, and agricultural markets. Products include posts, support systems, columns, hangers, sheds, poles, engineered wood products, beams and I-joists.
Walter & Jackson, Inc
Distributor of building products for contractors. Supplies include framing lumber, treated lumber, plywood, I-joists, roof trusses, insulation, spray foam, and caulk. Also provide woodworking and design services.
Boise Cascade Corp
Manufacturer of engineered wood products including beams, joists, plywood, lumber, and particleboard. Also provide distribution services to building material dealers, home improvement centers, and industrial customers.
Steel Dynamics, Inc
Manufacturer of steel materials. Steel is available in sheet, rod, bar, channel, flat, angle, and rail forms. Hot-rolled, cold-rolled, structural, coated, and painted steels are available. Specialty shapes, threaded rod, joists, girders, trusses, and cross-member are also offered.
Louisiana-Pacific Corp
Manufacturer of building materials and supplies for the construction industry. Flooring, fascia, beams, I joists, building panels, framing systems, sheds, oriented strand (OSB) and rim boards are offered. Dimensional, engineered, finger-jointed, hardwood and laminated veneer lumber (LVL) are also available.
Hutchison Incorporated
Manufacturer & distributor of building wood products including I joists. Available in flange size of 1-3/4 in. & 2-5/16 in. & lengths from 9-1/2 in. to 16 in.
Lyman Lumber Company
Distributor of lumber products for builders. Engineered wood products, roofing, shutters, fasteners and sidings are available. Barriers, beams, drip edges, flashing, headers, joists, cedars, sealants, sheathings, shingles, studs, vents, soffits and fascia products are also offered.
Product Specifications
Learn why LP SolidStart I-Joists are the right choice for your upcoming job.
How It's Made
Gorilla Glue Technology® helps build one of the strongest, stiffest sub-floors in the industry.
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.