RE: How do I select master Node?

Hi Provas,

There is no such restrictions for Master node location. According to your requirement you can specialize a node as Master node.

But, you need to maintain the following points while assigning Master/Slave Specification:-

1. Solid elements may not be connected to slave joints.
2. Master joints may not be master or slaves in another entry.
3. Slave joints may not be master or slaves in another entry.
4. Slave directions at joints may not be supported directions or have displacements imposed.
5. Master and/or slave joints may not be inclined supports.
6. The master / slave specification is only intended for linear static and dynamic analysis.
7. Multi linear springs are not permitted.

You can also go through STAAD.Pro Technical Reference Manual (5.28.1) for more details.

Hope this helps you.

Thanks.