When I run a DIRECT analysis, I get the following warning

**ERROR- FYLD OUTSIDE THE NORMAL RANGE FOR STEEL, CHECK UNITS. What does that mean ?

As part of the DIRECT ANALYSIS definition, you are required to key in certain controlling parameters for the analysis which is done as part of the Direct Analysis definitions. One of these parameters is the FYLD parameter which is used subsequently by the software in computing the Taub values ( equation C2-2b of the AISC 360-10 specifications). The value that you use for the FYLD should be consistent with your input unit settings that you used when defining the parameter. The error would show up if there is an inconsistency between the value you provided and the units you used. For example if your input units were “inch Kip”, you are expected to put in a value for FYLD of 50 or 36 or 48 etc. However if you define it as 7200, you would get the error. The software does an internal check and tries to make you aware of this discrepancy by issuing this warning.