Setting Standards.
Advancing Designs.

Your Resource for Steel Joist Construction

Search through our numerous resources written by SJI members and academic researchers, which include publications, design tools, webinars, technical papers and articles related to the design, manufacture and behavior of steel joists and Joist Girders.

Featured Resource

Webinar: Simple Connections Simplified

Join us for this FREE live SJI webinar on Wednesday, June 21, 1:00-2:30 p.m. ET

Second Edition CJ-Series Composite Steel Joists Catalog

Need to minimize your floor depth, maximize your ceiling height and/or reduce your building height? Learn how the CJ-Series Composite Steel Joists can help you achieve all of these.

Joist Girder Analysis Tool

The new Joist Girder Analysis Tool assists the SER in determining the strength of each member within existing Joist Girders. The tool is applicable for G or VG type joist girders, which may be symmetrical or unsymmetrical at the ends.

Identify Existing Joists

Need help identifying existing joists in a building structure? SJI will review our extensive files to find joists similar to those you have located in an older building..

Featured Projects

Seaport Office Building

Commercial, Office

The Class A Office building in Boston, MA was completed in 2018 and features a total of 400,000 sq ft. The building is a Green Building LEED Certified Platinum featuring 17 floors with retail space on the 1st and 2nd floors.

Child Care Center


The 50,000sf ESPN Child Care Center achieves a minimum LEED Silver Certification with strategies including use of local, natural materials, appropriate building orientation and lots of daylighting and views.

Steel & Stainless Steel Process Facility

Industrial, Manufacturing Buildings

One of the most interesting facts of the project was the sheer size. Steel tonnage totals are as follows: Roof Joists = 1,227 tons; joist girders = 2,668 tons; wall joist = 1,045 tons; and joist bridging = 540 tons.