The creep model used in Ram Concept for Load History deflections is based on ACI 209R-92. Refer to the program manual section 67.3.2 for some general information. For further reading see this wiki post: RAM Concept Load History Calc Options TN …

A colleague who is more familiar with the AS 3600 code offered this help. AS 3600 breaks down total shrinkage into autogenous shrinkage and drying shrinkage, whereas Concept only has a single value for shrinkage that represents the combination. I think…

The L.T. Deflection Plan is no longer a standard plan, since load history deflections are the recommended method for long term deflections. However, you can create a new plan and plot the strip-based L.T. Deflections as follows: 1. Click on the Layers…

I'm sure lots of engineers have used Concept for this purpose. I assume you are using Load History analysis. Alt Envelope factors are not used in Load History analysis, only the standard load (and pattern is used). The program manual, section 67.1…