Executive Engineer, RCD, APWD, Wimberlygunj

Taking out the old filter media and perforated slab carefully, including stacking of serviceable and unserviceable materials separately and disposal of unserviceable material, lead upto 50 m disposed material to be neatly dressed also washing by scrapping with wire brush and sand papering and preparing the surface smooth Removing and disposing silt , algae and other residue from the inner walls and surface of filter unit and outlet pipes/chambers by washing with bleaching etc. for all leads and lift all complete as per direction of Engineer-in-Charge.

Supplying of Stone/Sand(of required sizes in filter bed in required thickness, Coarse sand (effective size 0.15 mm -0.30 mm) for all leads and lift all complete as per direction of Engineer-in-Charge.

Stone aggregate of size 65 - 40 mm

River Sand (effective size 0.15 mm -0.30 mm)

Laying, spreading and leveling of newly supplied Stone/Sand and already existing material after washing and cleaning, in filter bed in required thickness & perforated slab for all leads and lift all complete as per direction of Engineer-in-Charge.

Stone aggregate of size 65 - 40 mm

Stone aggregate of size 40-20 mm

Stone aggregate of size 06-12.5 mm

River Sand

Extra for every additional lift of 50 mtr or apart there of in..

Stone Aggregate, sand precast perforated slab