Wrong confinement factor value

[gocchipi]

I have modelled a concrete structure, but I'm not able to run the analysis because an error message appears. The message says "Wrong confinement factor value encountered in procedure SectFrcCon_ma"
I don't understand what kind of error I did or what is the wrong data input.
I didn't consider unusual values but I used only default material settings.
If someone could help me I would be grateful.
Thank you

[huffte]

If you care to e-mail the file, gocchipi, I would be happy to take a look as I can find time to see if I notice anything unusual. Just click on my forum name and you'll get to a screen which enables you to send an e-mail to the selected user.

[gocchipi]

Thank you huffle,
at the end I solved the problem...