Roof Bay Analysis Tool – With Ponding Analysis

This Roof Bay Analysis Tool has been developed by the Steel Joist Institute to assist the structural engineer of record with selecting optimal bay sizes and framing options. The tool provides a number of input options allowing for customization based on project criteria and designer preference as well as owner and code requirements.

Also included is a Ponding Analysis option to further assist the engineer in properly evaluating additional loading conditions.

Roof Bay Analysis version 5.1 is available for free download. Complete the form or log in to your account to access this tool. SJI may notify you when updates are made to this design tool.

“The SJI Roof Bay Analysis Tool – With Ponding Analysis spreadsheet has become a valuable part of our structural design process. It is intuitive to use and is highly customizable for each project-specific situation. With this tool we can quickly analyze safe and efficient roof framing designs and verify they are not susceptible to ponding instabilities.” – Kevin Palarz, S.E. – Grivas-Krause Associates

Watch our informational video on KCS Joist.

By downloading and using this tool you accept and agree to the SJI Disclaimer.

Design Guide 40 Rain Loads and Ponding
This Design Guide provides an in-depth review of rain loads and ponding effects to help design professionals properly and efficiently design for ponding on roofs constructed with structural steel, open web steel joists, and joist girders. It includes several recommended methods of analysis that can be used to consider the effects of ponding, methods of design accounting for ponding effects, and a presentation of the SJI Roof Bay Analysis Tool. These methods are thoroughly discussed and then demonstrated with many helpful design examples.

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