Build Smarter with TRIFORCE Open Joist
Modern residential and light commercial projects require framing systems that support speed, strength, code compliance, and long-term serviceability. The TRIFORCE Open Joist offers a simpler, cleaner, and predictable approach. This engineered wood product uses an innovative open truss configuration to deliver strength, consistent performance, and easier mechanical routing, without adding steps or complication to the build. TRIFORCE’s open web joists performance and flexibility make for a smarter, scalable solution for both new construction and renovation projects.
Find stock Open Joists here.Â
Versatility and application
TRIFORCE® Open Joist is ideal for a wide range of applications, from single-family homes and multi-family developments to light commercial structures such as offices and mixed-use buildings. Its open web design supports:
Simplified service routing for HVAC ducts, plumbing, and electrical lines
Flat, consistent floors across varying spans and room sizes
Ease of installation in both new builds and remodels, including tight or irregular spaces
Why More Builders Are Choosing Open Joists
The construction landscape continues to evolve. Homes are more energy-efficient, mechanical systems are larger and more complex, and jobsite timelines are tighter than ever. TRIFORCE Open Joist, built from high-quality engineered wood, helps builders meet these challenges with reliable structural capacity and a predictable installation process.
Engineered Strength and Predictable Performance
As an engineered solution, TRIFORCE joists are manufactured under controlled conditions to ensure every unit meets strict structural standards. Builders do not have to accommodate natural variations common in dimensional lumber. Instead, they get:
Uniform stiffness and load capacity
Improved resistance to warping, shrinking, and moisture
Predictable deflection performance across consistent spans
Because open-web joists distribute loads efficiently through their open truss structure, crews can frame with confidence while reducing unexpected rework.
Mechanical Routing Made Easier
One of the most significant advantages of switching to open-web joists is the time saved on mechanical coordination. HVAC ducts, plumbing lines, and electrical wiring run directly through the open truss spaces – no drilling, no layout conflicts, and no structural weakening.
This simplicity reduces trade overlap, minimizes callbacks, and streamlines inspections. It’s a major reason why builders on Long Island and throughout the Northeast are moving toward TRIFORCE Open Joist systems for both single-family homes and multi-unit projects.
Lightweight for Safer, Faster Handling
TRIFORCE joists are significantly lighter than many traditional framing products, including solid I-joists. Lighter framing components:
Reduce crew fatigue
Support safer lifting and maneuvering
Improve jobsite efficiency
Benefit multi-story projects or tight lots where equipment access is limited
This ease of handling is one of the most noticeable day-one benefits for framing crews.
Key Features at a Glance
| Feature | Benefit | Notes |
|---|---|---|
| Trimmable Ends | Allows on-site length adjustments | Only cut within approved zones |
| Open-Web Structure | Streamlines HVAC, plumbing, and electrical runs | Eliminates drilling and reduces errors |
| Lightweight Design | Safer, faster installation | Helps reduce labor fatigue |
| Longer Span Capability | Greater design flexibility | Confirm allowable spans via manufacturer tables |
| Engineered Wood Construction | Predictable structural performance | Resists moisture, warping, and shrinkage |
Safety and Compliance
Manufactured without steel plates, TRIFORCE® Open Joist simplifies cutting and fastening, reducing corrosion risks. The open design facilitates easy installation of firestopping materials, allowing compliance with safety codes. With proper detailing, these joists integrate seamlessly into fire-rated assemblies, supporting safe and compliant construction.
The design also supports efficient routing of life-safety systems like sprinkler pipes, reducing conflicts and enabling cleaner installations. Always follow project specifications and local codes for fire-resistance ratings and installation protocols to ensure safety and compliance.
Common Installation Issues: What to Avoid
Incorrect orientation: Each joist has a designated top and bottom. Always follow the printed markings to ensure proper structural performance and avoid costly engineering reviews.
Inadequate bearing support: Joist ends must have sufficient contact with beams or walls to properly transfer loads. Maintain a minimum of 1.5 inches of bearing at each end, or follow the manufacturer’s layout plan.
Concentrated load damage: Avoid stacking heavy materials on unbraced joists. Wait until the floor system is fully braced and sheathed to prevent structural damage.
Riverhead Building Supply: Your Local Advantage on Long Island
Riverhead Building Supply is currently the only stocking dealer on Long Island for TRIFORCE Open Joist. This means builders have immediate access to materials – no long lead times or shipment delays.
Additional advantages include:
Fast delivery: Our large fleet delivers directly to job sites across Long Island every day.
Estimating and takeoff support: Work with our Estimating Services team for planning, layouts, and floor system optimization.Â
Local expertise: Our specialists help builders evaluate options, confirm span requirements, and ensure compatibility with other engineered wood elements.
The result is a smoother build process and fewer surprises on site.
Specifications and Quality
Available in various depths and lengths, TRIFORCE® Open Joist accommodates typical spans for residential and light commercial projects. Each joist is rigorously tested for consistent performance, ensuring predictable deflection and uniform behavior, critical for large-scale or multi-unit projects.
Consult span tables and technical data for specific requirements, ensuring adherence to local codes and project specifications. This attention to quality assurance guarantees reliable performance and long-term satisfaction. More literature here.Â
Now in Stock at Riverhead Building Supply
TRIFORCE® Open Joist offers significant site efficiencies, reducing installation time and structural alterations while ensuring clean inspections. Precision manufacturing and testing deliver reliable strength and stiffness, minimizing callbacks. The lightweight design enhances handling and safety, and the open web supports future serviceability.
Riverhead Building Supply is your trusted source for open web joists, offering dependable availability and expert support. Our team provides valuable product insights and coordination tips, helping keep your projects on schedule. Visit one of our locations or shop online to see our selection of Open Joists.Â
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*All images courtesy of TRIFORCE® Open Joist
