Design Tools

The Steel Joist Institute provides a plethora of resources to assist you in building and designing with steel joists and Joist Girders. Click below to view the resources.

Joist and Joist Girder Reinforcement Tool

This design tool assists the SER and steel fabricator with the complex task of reinforcing open web steel joists and Joist Girders in order to increase their strength to accommodate added loads for which they were not originally designed.

Historical Load Tables

The historical load tables originally appeared in the SJI Specification and Load Tables catalogs starting in 1932. Download the tables for the Longspan, SJ-, S-, J-, K, LA-, LH-, LJ-, DLH- and DLJ-Series for free.

Roof Bay Analysis Tool

This design tool assists the SER with selecting optimal bay sizes and framing options. The tool provides several input options allowing for customization based on project criteria and designer preference as well as owner and code requirements and a ponding analysis option.

Floor Bay Analysis Tool

This Floor Bay Analysis tool assists the SER with selecting optimal bay sizes and framing options. The tool provides several input options allowing for customization based on project criteria and designer preference as well as owner and code requirements.

Joist Girder Moment Connection Design Tools

These design tools assist the SER, the connection designer and the steel fabricator with the complex task of designing appropriate connections between Joist Girders and columns. The tools can be utilized for wide flange and HSS columns.

Virtual Joists

The virtual joists table provides the approximate section properties for virtual joists for use by the structural engineer of record (SER) in preparing the building structural models.

Virtual Joist Girders

The virtual joist girder table provides the approximate section properties for virtual joists girders for use by the structural engineer of record (SER) in preparing the building structural models.

Floor Vibration Analysis

The Steel Joist Institute has partnered with Dr. Thomas H. Murray to provide a vibration analysis program that combines years of experience in vibration testing with the latest research in the field.

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.

Check Out Our Library of Resources