Why is such kind of loading diagram shown when I apply floor load.
Please attach the model.
churhat intake well .std
I ran your model on the latest version of STAAD.Pro CE (22.07.00.160) and the floor load seems to be generated fine. So try to upgrade to this version and see if this solves the issue.
ALSO USING THE SAME VERSION BUT HAVING ISSUES WITH LOAD.
resolve this issue also