I want to use RCC floor slab effect on the steel structure of an industrial building. Shall I use master slave command or shall I use floor diaphram command?

RE: I want to use RCC floor slab effect on the steel structure of an industrial building. Shall I use master slave command or shall I use floor diaphram command?

gaurav vijay — Wed, 30 Sep 2020 16:40:16 GMT

Thanks for clarification sir,

please guide

1) how to define the master node. it shall be centre of rigidity? using print dia CIA command? In the case of master-slave command, STAAD suggest to use center of mass as master slab.

2) any guiding principle for selecting diaphragm for floor wit openings

3) criteria of selection of rigid and semi rigid diaphragm in staad.

RE: I want to use RCC floor slab effect on the steel structure of an industrial building. Shall I use master slave command or shall I use floor diaphram command?

gaurav vijay — Wed, 30 Sep 2020 16:40:15 GMT

Thanks for clarification sir,

please guide

1) how to define the master node. it shall be centre of rigidity? using print dia CIA command? In the case of master-slave command, STAAD suggest to use center of mass as master slab.

2) any guiding principle for selecting diaphragm for floor wit openings

3) criteria of selection of rigid and semi rigid diaphragm in staad.

RE: I want to use RCC floor slab effect on the steel structure of an industrial building. Shall I use master slave command or shall I use floor diaphram command?

Sye — Wed, 30 Sep 2020 16:24:27 GMT

Using floor diaphragm is recommended as it automatically generates the master slave connections and also accounts for torsion effects due to rigid diaphragms.