Steel Shed Base Reactions Issue

[EngrGHussainPE]

Hello everyone,

I am redesigning an existing car parking shed for pad foundation design. I have modeled it in SAP2000. Joint reactions are contraditory to the presumed load distribution. There should be vertical reactions i.e. Fz as the shed is overhang. However, the reaction Fz in one column is in upward direction whereas in other column is in downward direction. Can anyone here help with reviewing the model and offer the comments what I am missing here or everything is good?



Thanks in advance.