steel section

Hi Im modelling a three hinged truss in StaadProv8i for completion of our school requirements.

The problem is, we should model a steel truss without failed section before new year starts.

But after I run analysis, the output shows some failure beams.

Can anybody else advise me for this or else correct without modification in other inputs.

Thanks yall

Happy New Year

PILLOSES_EXAM3.std