Steel Joist Institute Releases Its 44th Edition Catalog

FLORENCE, S.C., August 1, 2017 – The Steel Joist Institute has released its 44th edition of the "Standard Specifications, Load Tables and Weight Tables for Steel Joists and Joist Girders." The new release provides design, construction and engineering professionals in the steel joist industry with accurate information on the design of steel joists and Joist Girders, including specifications and applications.

The 220-page guide provides a more practical approach to better define the actual use of the products in the catalog. The three previous Specifications – K-Series, LH-Series and DLH-Series – and Joist Girders have been combined into one, unified Specification. Load Tables for each Series have not been combined and remain unchanged. All of the changes to the catalog are aimed at making steel joists and Joist Girders safer, simpler to use and more economical. Any updates to the Specification are ANSI-certified through consensus approval.

Notable updates include: adjustments made to the K-factors for web and bottom chord slenderness ratios; updated joint eccentricity criteria; increased minimum end anchorage requirements for uplift; and a reorganized, revised and updated Code of Standard Practice, including additional information on uplift and end anchorage. Several design criteria or checks that were already being performed, but had not been shown in the Specifications, are now included. These include uncrimped single angles and erection bridging. The updated material also states that when exact locations for concentrated loads are known, the joist shall be designed without the need for field-applied web members. And, for both K-Series and KCS joists, bending stress can no longer be neglected for panels less than 24 inches. The top chord design criteria now match that of LH-Series and DLH-Series.

The Standard Specifications 44th edition is available to download for free online at Hard copies are also available and may be purchased for $50. To order a hard copy, please visit          

Besides setting standards for the steel joist industry, the Steel Joist Institute works closely with major building code bodies throughout the country helping to develop code regulations regarding steel joists and Joist Girders. The Institute also invests thousands of dollars in research related to steel joists and Joist Girders, and offers a complete library of publications and other training and research aids. The Steel Joist Institute is a not-for-profit organization. For more information, visit or join the Steel Joist LinkedIn group.

Melissa Breer
HLK Agency
Tel: 314.571.6299

J. Kenneth Charles, III
Managing Director
Steel Joist Institute
Tel: 843.407.4091