Modeling sloped flexible diaphragm in etabs

[coolad2007]

Hi all,

I was wondering if it is possible to model a sloped flexible diaphragm in etabs. I could not find a solution for this modeling problem. Any suggestions would be highly appreciated.
The reason being I am modeling an overly complicated single story building (thanks to the ARCHT) with dual LFRS. I though it would be easier to atleast get a start via etabs but the roof is sloping and i cannot have it modeled.


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[johnbridge231]

Why do you need the diaphragm option?

Analysis and Design of arbitrary cross sections
Reinforcement design to all major codes
Moment Curvature analysis

http://www.engissol.com/cross-section-analysis-design.html