### Convention of bending moment signs

Posted:

**Sun Nov 24, 2019 8:39 am**Hi,

I have modelled the same structure with STKO and with Seismostruct and I have seen that the sign of the bending moment is discordant. The global axes is the same and also the local axes of the elements. So, the question is: What is the Convention of bending moment signs in STKO? And why is It unlike the one obtained with seismostruct ?? Thanks.

I have modelled the same structure with STKO and with Seismostruct and I have seen that the sign of the bending moment is discordant. The global axes is the same and also the local axes of the elements. So, the question is: What is the Convention of bending moment signs in STKO? And why is It unlike the one obtained with seismostruct ?? Thanks.