Minimum Reinforcement for Beams in Etabs

[Popol]

Hello,,
I am new to Etabs and I am just curious to know when designing slab on beams whether Etabs consider T-beam action automatically or should it be activated-in such case how do we do that?. i am also curious to know whether Etabs automatically enforces minimum steel reinforcement for beams? It seems that it does for column, but i am not sure whether it does for beams.
Thanks
P.

 

[amadeus]

The contribution of slabs for flexure is automatically included if the slab is defined as a shell. You will notice smaller reinforcement areas if you define slabs as shells.
On the minimum reinforcement area, ETABS uses the alternate (1.33 * As required) on all flexural designs and that is why you will see smaller reinforcement areas than 14/fy*bw*d (MKS units).

 

[johnbridge231]

One relevant problem here is that the beam flange is considered twice when modelling the beam with frame elements and the area with shells. This makes the beam stiffer at the span and the zones around the beam edges may be designed inadequately.

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