Replacement of Filter Media at Swarajgram Water Treatment Plant under Swarajgram section CD, APWD, Diglipur

Amount

Finishing walls with water proofing cement paint of required shade :

Old work (one or more coats @ 2.20 kg/10 sqm) complete.

Supplying and filling in filter media in chamber with:(The rate is inclusive of all materials, labours & Scaffolding involved i/c lead & lift).

Mainland course sand of minimum size 1.80mm to 2.36mm including levellling dressing all complete.

Stone aggregate of size 40mm to 95mm including levelling dressing all complete.

Stone aggregate of size 6mm to 10mm including levelling dressing all complete.

Removing and cleaning of filter media chamber including lift upto 6 mtr and stacking with a lead of 50mtr.

Stone aggregate 12.50mm to 20mm nominal size.

Stone boulder 90mm to 45mm nominal size.

Cleaning the filter bed inner surface including removing the deposited slit and removing dirt etc. including washing the surface with the help of required scrubbers and also cleaning with sedimentation tank & clorination chamber where ever required, without causing any scratching/damage to the filter bed structure and finally washing the surface with clean water with the help of pressure jet machine all complete as per direction of Engineer-in-charge. (The rate is inclusive of all materials, labours & scaffolding involved including lead & lift).

KARTICK BAROI