Work of cleaning and repair of sewer lines in BIDA area (three-year contract).

Amount

Operation and maintenance of out fall/main/lateral sewer line & manhole in BIDA sectors (Sector 1, 2, 2A, 3, 3A,GH 5,6, 8, 9, 9 Ext. & EWS /Star LIG/Bus stand LIG) including disposal of solid waste clearance but excluding pumping as per direction of engineering In chagre.

Operation and maintenance of sub leteral / system already commisioned by UIT.

Flushing of sewer line & man hole from water tanker. (Tanker capacity 4000 Ltr.)

Pumping out of sewage waste discharge from existing chocked man hole. This work includes taking out water discharge from tanker & disposed it properly up to 4 Km lead. (Capacity of each tanker is 4000Ltr.)

Supply & Fixing of precast ferro cement manhole cover of 33kg cast iron double sealed ring withstand for class "AA" loading 560 mm dia.

Raising of sewer manhole opening by placing a frame cover of 870 mm dia having thickness of 150mm to with stand with AA class loading including cutting the Bituminous/granular courses & excavation in square portion of 1200 x 1200 mm, whole assembly should be firmly fixed by casting 1 : 1.5 : 3 CC M20 grade. Inner side, if raised more than 150 mm then clear plaster work should be done to matching the openings. Complete as per direction of Engg. In charge.

Cleaning of Sewer line blockage form Sewer jetting machine with high pressure pump mounting on it, job complete after cleaning the blockage on the following dia lines including driver, techincal staff, diesel & any wear and tear of the machine belongs to contractor him self.

Suppyin of Super Sucker machine on day hiring basis for Cleaning and Sucking of sewer feom fighly chocked sewer line., job complete after cleaning the blockage on the following dia lines including driver, techincal staff, diesel & any wear and tear of the machine belongs to contractor him self.