This was example how to properly rotate support.
As Rafacascudo said : "No ,just Ux ,as long as you set the support local direction like I recommended"
Agree with your thoughts. However I'm lazy sometimes
Actually though, we normally add another member to the system, called a "spreader" The additional beam takes a compressive force, and leaves the actual structure to be picked up with a vertical force only.
I can send you a picture if you're not sure what it is.
When i calculate the file after i have added the supports on each corner I get a warning of instability on node 52... see the attached file. Should i take this to consideration or is it nothing to worry about?
Why should I only cross off on the UX, and not UY? I attached my file, could you see if it looks like iam simulating a lift?