Different Moment-curvature result

[salar]

Hi huffe
Would you please,give me an other email address beside:Tim.Huff@tn.gov
Google can't send files to @tn.gov
my email address: salar.d.ghashghaei@gmail.com

[huffte]

Dear SeismoSoft and salar,

It does appear to me that there is a problem in the conversion of bas sizes when units are changed in SeismoStruct. I'll explain.

salar has sent me a file which serves to compute the moment-curvature properties of a 400mm x 400 mm column with 8 25mm (#8) bars.

When I change units to English and open the reinforcement dialogue for the section, the bars have become #10 bars, whereas they should have become #8 bars.

I suspect that there may be an issue with metric bar properties. I believe that the model of salar is using English #10 bars when he specifies metric 25mm bars.

salar, I wonder if you have been going back and forth between units in your model. If so, this could be the problem. If not, we'll keep looking for it.

I think at a minimum, this should be a warning to encourage users to always check their reinforcement patterns once units are changed in a SeismoStruct model.

Best regards,

huffte.

[seismosoft]

Dear Tim and Salar,

Thank you for your input. Indeed, there is an error in the reinforcement conversion in versions 6.0 and 6.5, corresponding 25mm and #10 rebar diameters (both from SI to Imperial and Imperial to SI).
This error is already fixed in v7, corresponding 25mm diameters to #8 rebars.

SeismoSoft Support

[nikhilnbr]

How to get the moment curvature from the pushover analysis?

[z.gronti]

Dear nikhilnbr,

If you carry out a search on this Forum for the term "moment curvature" you should find plenty of posts on this matter.