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ETABS Semirigid Diaphragm No Axial Loads on Braced Frame Beams

ETABS Semirigid Diaphragm No Axial Loads on Braced Frame Beams

ETABS Semirigid Diaphragm No Axial Loads on Braced Frame Beams

(OP)
Hello All,


I am new to Etabs coming from RAM SS and am modeling a building laterally supported by braced frames. I have modeled the diaphragm as semi rigid but the beams on the braced frames are seeing zero axial force. I have tried to assign a semirigid diaphragm to the deck, also by going to assign/joint/diaphragms and nothing really changes.. Has anyone had this issue before?

Thanks!

RE: ETABS Semirigid Diaphragm No Axial Loads on Braced Frame Beams

What have you modelled the slab as? Shell or membrane?

RE: ETABS Semirigid Diaphragm No Axial Loads on Braced Frame Beams

(OP)
I have modeled the deck as a membrane/deck.

RE: ETABS Semirigid Diaphragm No Axial Loads on Braced Frame Beams

Try modelling it as a normal slab shell with reduced bending stiffness.

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