SAFE: No Negative Moments on Continuous Beams?

[Bigbeam]

I am modelling a pile supported suspended slab on grade beam foundation. When I look at the grade beam bending moments, all the beams appear to be simply supported. I have tried every combination of line element between piles and I cannot get negative moments in the beam. Yes - I have checked the fixity on the line element and there are no releases set. Any idea what I am doing wrong is this a program limitation?

 

[johnbridge231]

Can you upload your model?

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