A pre$-$ tensioned concrete Tee section having a flange width of $1200$ mm and thickness of flange $150$ mm$,$thickness of web being $300$ mm is pre$-$ stressed by cable having area $4700$ mm$^2$ located at an effective depth of $1600$ mm$.$If f $\_$ek $=40$ N$/$mm$^2$ f$\_$ p $=1600$ N$/$mm$^2.$Estimate the ultimate moment capacity of the pre$-$tensioned T$-$ section