Item-3 Cleaning of sewerage system including other required allied work

Cleaning of existing drainage shaft consisting various sewer/drain/RWH pipe line duly installed with gulley trap and small chambers. It connected to cable trench of size 600 x 900 mm (Approx) having length about 4.00 mtr. Such cable trench includes also to be clean and drain out from sewer and lying garbage. It also includes the lift out the covered Ferro cement covers before cleaning & put in previous position after completion of cleaning work. Water & other required T&P for cleaning purpose shall be arranged at his own cost.

Cleaning of existing sewer manholes of various sizes using Mechanical and safety equipments or manually as per depth of manholes and site condition also. Sewer may be drain out from manholes using suction tanker & sewage should be drain out from channel of manhole. It also includes the carriage of drain out sewer/sewage with the help of hand cart upto carriage way of Tractor- trolly then transportation from working site upto 5.0 KM away at suitable place.

Cleaning of existing both drains having size about 600 x 750 mm approx. just out side the building & connected to cable trench also presently filled up with overflowing sewer or garbage. Such drains have to be clean & drain out from sewer. It also includes lift out the covered Ferro cement covers before cleaning & put in previous position after completion of cleaning work. Water & other required T&P for cleaning purpose shall be arranged at his own cost.

Labour charge for laying of 200 mm PVC SN 8 Pipe line from existing drainage shaft upto outside the building through cable trench. It includes the 6 Nos. RCC core cuttings having thickness 200 mm to 300 mm for passing of 200 mm dia pipe line. After core cutting have to be repaired in good condition using cement mortar also. Outlet pipe should be connected to existing sewer manhole also. It also includes the repair of existing drainage chamber inside the shaft after connecting the outlet pipe.