I am getting this warning: WARNING- Deflection check of member # 11 will not be performed as DFF value not provided. I am sharing the input command. Please provide your view. STAAD SPACE START JOB INFORMATION ENGINEER DATE 15-May-23 END JOB INFORMATION…

As noted in the subject title, I'm having issues with getting the hat channel members (purlins) to pass in my 3D model. The members pass if I do a bending check by hand using the same gravity load and section modulus shown in the model (Sy=Iy/c). As you…