Cleaning of sewer line main hole or inspection chamber

Amount

Cleaning of chocked sewer line by diesel running vehicle mounting hydraulic operated high pressure suction cum jetting sewer/main hole cleaning machine fitted with pump having 4000 litres suction capacity and 6000 litres water jetting tank capacity including skilled operator, supervising engineer etc. for cleaning and partial de-silting of manholes and de-chocking of sewer lines. De-chocking and flushing of sewer line from one manhole to another by high pressure jetting system of 2200 PSI for sewer line from 150mm dia upto 300mm dia for all depth.

Cleaning of septic-tank including removal of sludge by suction and disposal at a safe place so that it may not create any nuisance or health hazard by cesspool machine (The cesspool machine suction pipe and necessary all equipments at site are to be provided by contractor).

Excating trenches of required width for pipes cable etc including excavation for sockets and dressing of sides, ramming of bottoms depth up to 1.5 m, including getting out the excavated soil and then returning the soil as required in layers not exceeding 20 cm in depth including consolidating each desposited layer by ramming watering etc and disposing of surplus excavated soil as directed, within a lead of 50 m.(a)Pipes cable etc exceeding 80 mm dia but not exceeding 300 mm dia

Providing and laying cement concrete 1:5:10 (1 cement: 5 coarse sand: 10 graded stone aggregate 40 mm nominal size) all-round S.w. pipes including bed concrete as per standard design (a) 150 mm PVC Pipe .

Providing and fixing on wall face unplasticised Rigid PVC rain water pipes conforming to IS : 13592 Type A< including jointing with seal ring conforming to IS: 5382, leaving 10 mm gap forthermal expansion. (i) Single socketed pipes. (a)110 mm diameter

Making connection of drain or sewer line with existing manhole including breaking into and making good the walls floors with cement concrete 1:Two or more coats on new work. :1:2:4 mix (1 cement: 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) cement plastered on both sides with cement mortar 1:3 (1 cement 3 coarse sand) finished with a floating coat of neat cement and making necessary channels for the drain etc. complete.(a)For pipes 100 to 250 mm diameter

Cleaning jungle including uprooting of rank vegetation grass brush wood trees and sapling of girth up to 30 cm measured at a height of 1 m above ground level and removal of rubbish u to a distance of 50 m outside the periphery of the area cleared

RAMBIR SINGH