Replacement of filter media at Ramnagar water treatment plant under Ramnagar section under Sub Division No.III, CD, APWD., Diglipur

Amount

Removing and stacking of existing filter media from filter unit including lift up to 6.00 metre and lead upto 50 metre as per direction of Engineer-in-charge.

River Sand

Stone aggregate of different size

Providing and filling of filter media in filter bed unit (rate inclusive of all materials, labours & scaffolding etc. including lead & lift).

River sand (coarse) of effective size 0.15 mm to 0.30 mm as per IS 11401 (Part 2) : 1990 including levelling dressing etc. all complete.

Stone aggregate of effective size 18-33 mm including levelling etc.complete

Stone aggregate of effective size 6-22 mm including levelling etc.complete

Stone aggregate of effective size 4-0.7 mm including levelling etc.complete

Shifting of existing RCC precast perforated slab/CC cubes inside the filter bed, cleaning/washing/removal of silt/algae and rearranging the perforated slabs/cubes in position as per the direction of Engineer-in-charge.

Brijesh Tiwari (BID ID -47205)