Frequently Asked Questions

Answers to your frequently asked question. Browse by topic or search for your question.


This “middle” chord can be diagonally braced to the top chord of adjacent joists or structural steel. Typically, these joists are assembled on the ground prior to being lifted into position.  Bridging should be installed to the lower truss and upper truss for lateral restraint.

Contact Us

Need additional information or assistance with steel joists? Contact the Steel Joist Institute.

Stay Informed With Steel Joists

Sign-up for SJI enews to receive the latest industry news, articles, webinars, design tools and publications from SJI.