failure of beam

[rajesh pullat]

Hi
after analysis of a reinforced concrete 10 storey building with seismic analysis in ETABS ( base shear method)
some beams fail as it is red coloured
but i cannot find the reason for failure
the shear strength(tauV<taucmax) is ok ...also percentage of reinforcement < max allowed
Could anyone tell me what else can be the reason for failure
Rajesh

 

[ENGUCR]

Sometimes red color indicate that you may very close to failure but not failed. But any way pls attach your summary envelop sheet of a said beam produced by etabs

 

[mushtpk]

usually if stress level is over 95% of allowable limit , it will indicate in red colour.