National Steel Bridge Alliance

IRM Evaluator

The IRM Evaluator automates much of the process for evaluation of built-up members for internal redundancy. The IRM Evaluator follows provisions of the new AASHTO Guide Specifications for Internal Redundancy of Mechanically-Fastened Built-up Steel Members to evaluate internal redundancy and establish a special inspection interval. Unique spreadsheets are used for axial and flexural members. Only the axial multi-component member type is available for download at this time. The flexural member evaluator tool is currently in development.

The IRM Evaluator has been implemented using Microsoft Excel. The Excel file includes a macro to generate multiple evaluation sheets at one time. To enable this feature, the user will need to enable macros. Although this feature is not required for it to perform evaluations, users may find it to be a time-saver. For more information, please refer to the Axial IRM Evaluation Implementation Guide.

Click on the download button below to open the download registration page. Registration is required so that users can be notified of future updates to the IRM Evaluator. Following registration, the user will be able to download a zip file including a user manual, the IRM Evaluator spreadsheet, and a completed example.

Download IRM Evaluator

The current version of the IRM Evaluator (v1.04) was released on March 29, 2019. Click here to view a complete listing of fixes.