Steel Joists
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Engineered steel joists and girders for reliable load support.
Maximize structural performance with CWJ Joist and Deck’s steel joists and steel girders, engineered to provide dependable load-bearing support for commercial, industrial, and multi-story construction. Our joist systems are designed to efficiently transfer loads, reduce material weight, and streamline installation while maintaining long-term durability.
From standard open web steel joists to heavy-duty joist girders, we manufacture structural solutions built to meet precise project specifications and demanding building requirements.
What Are Steel Joists?
Steel joists are horizontal structural members used to support floors and roofs in commercial and industrial buildings. Typically constructed with open web configurations, steel joists provide excellent strength-to-weight ratios while allowing space for mechanical, electrical, and plumbing systems to pass through the webbing.
Steel girders, often referred to as joist girders, are larger primary framing members designed to support concentrated loads from joists. Together, joists and girders create an efficient, cost-effective structural framing system.
CWJ Joist and Deck manufactures steel joists and girders engineered for accuracy, strength, and job-site efficiency.
Types of Steel Joists We Manufacture
K-Series Steel Joists
Designed for typical floor and roof applications in commercial buildings. K-Series joists are lightweight yet strong, making them ideal for offices, schools, retail centers, and multi-family construction.
LH-Series Steel Joists
Long-span joists designed for applications requiring greater distances between supports. Ideal for warehouses, manufacturing facilities, and large open spaces.
DLH-Series Steel Joists
Deep long-span joists engineered for even greater load capacities and extended spans. Suitable for heavy industrial applications and structures requiring significant clear space.
Joist Girders (Steel Girders)
Primary framing members designed to support concentrated loads from steel joists. Joist girders are commonly used in multi-story buildings, parking structures, and large commercial projects where structural demands are higher.
Engineered for Efficiency and Long-Term Performance
CWJ Joist and Deck steel joists and girders are manufactured using high-strength structural steel and fabricated to meet precise project-specific loading conditions and span requirements. Each member is engineered based on detailed structural calculations to ensure it performs reliably under anticipated live loads, dead loads, wind forces, and other applicable design criteria.
Our fabrication process emphasizes dimensional accuracy, weld integrity, and consistent material quality to ensure every joist and girder aligns seamlessly within the overall framing system. By combining advanced manufacturing techniques with rigorous quality control standards, we deliver structural components that offer dependable performance, long-term durability, and compliance with industry and building code requirements.
- Material: High-strength structural steel
- Joist Series Available: K-Series, LH-Series, DLH-Series
- Girder Options: Custom joist girders engineered for concentrated loads
- Span Capabilities: Custom engineered based on project requirements
- Finish Options: Primed or galvanized finishes available upon request
- Custom Fabrication: Manufactured to specified lengths and load criteria
| Deck Gage | Weight (psf) | Maximum Spans (ft) | Total Load (psf) | Live Load (psf) |
|---|---|---|---|---|
| 20 gage | 1.8 psf | Single: 8 ft Continuous: 10 ft |
90 psf 100 psf |
50 psf 60 psf |
| 18 gage | 2.2 psf | Single: 10 ft Continuous: 12 ft |
110 psf 125 psf |
70 psf 85 psf |
Structural Solutions for Commercial and Industrial Construction
Steel joists are a practical and efficient structural solution for a wide range of commercial and industrial applications. Engineered to deliver exceptional strength with minimal material weight, they provide reliable load-bearing support for floor and roof systems across diverse building types. Their open web design allows for efficient integration of mechanical, electrical, and plumbing systems, making them especially well-suited for office buildings, multi-family developments, educational facilities, warehouses, and mixed-use construction where coordination and space optimization are critical.
Long-span joists create wide-open layouts for storage and logistics operations.
Heavy-duty joists and girders accommodate equipment loads and structural demands.
Provide durable, cost-effective structural support for classrooms and assembly spaces.
Seamless Installation for Maximum Performance
01
Preparation
Our team ensures that each 2" deck panel is cut to precise lengths based on project specifications, reducing on-site adjustments.
02
Placement
The decking is laid on steel frames or joists, serving as a formwork for poured concrete.
03
Concrete Pouring
Once in place, concrete is poured onto the deck, bonding with the steel profile to create a unified structure.
04
Shear Stud Installation
Shear studs may be installed to anchor the deck firmly to the steel beams, reinforcing composite action.
Dependable Structural Steel Solutions from Windsor, CT
CWJ Joist and Deck combines engineering precision, quality fabrication, and responsive service to deliver steel joists and girders that perform under pressure. We work closely with contractors, developers, and engineers throughout Connecticut and the East Coast to ensure projects stay on schedule and within budget.
Our team provides:
Custom-engineered joist and girder systems
Technical coordination and support
Reliable fabrication timelines
Efficient delivery to your job site
When structural performance matters, CWJ Joist and Deck delivers strength, reliability, and expertise you can build on.
