fire provisions in RC column

[Djokaboris]

Hi;

For the calculation of RC column with fire provisions, even a section as stocky as 600x750mm doesn't pass the eccentricity verification for fire. Can robot even calculate fire provisions for columns?? because did even a trial section of 1000mmx1000mm but still failed in eccentricity

[ouoba.diassiboalain · Accepted solution]

Hello , 
I'm not sure ,but  I think the software is comparing first excentricity (Momment/axial effort ) and 0,15 h or 0,15b . h and b are your column section dimensions. You may try to increase your column section  to increase 0,15h and 0,15b depending on the moment that cause the problem ( Mz OR My) . Or you may try make releases on your columns top , that will reduce moments on columns . 

[Djokaboris]

Thanks Sir @ouoba.diassiboalain , the releases actually "works". but i think is actually a hack because doing that implies there's no moment in the columns . increasing column section as large as we can also doesn't work.

[Djokaboris]

Releasing both sides "works", but  only the top doesn't change the error