Construction of RCC circular half cup storm sewers in manhole chambers without having cover and subjected to direct heavy load of traffic complete as per drawings and designs PCC 1:6:12 cement sand and stone aggregate, RCC M-25, steel reinforement TMT Fe 500, steel form work, 12.5 mm thick cement plaster 1:2 with 1 mm thick neat cement rendering by using mechanical mixer and vibrator complete in all respects. 102″ ( 2590 mm ) i/d RCCStorm Sewer