State Plan 2024 25 KWSS Renovation of Water Treatment Plant Replacing of Old filter media of Filter bed No.1 and No.6. of Water Treatment Plant at Chavasseryparamba General Civil Work

Amount

1 Replacing old filter media No: I and VI with new Media

100.55.5:Removing filter media from the filter beds without making any damages to the existing structures and back manifolds and stacking at a safe and convenient place for segregation process and as per the directions of the department officers etc. complete.

15.2.1:Demolishing cement concrete manually / by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in-Charge.Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

OD1774/2024-2025:Scraping cleaning and washing the sides and bottom of filter bed : Washing using brooms, brushes ,<br>bleaching powder and oxalic acid by engaging coolies, scrubbing twice, washing and cleaning using fresh<br>water, including side wall, floor slab and columns, disposing the the slurry / waste materialsaway from<br>the immediate premises and within the initial lead of 50m from the periphery of the filter,without causing<br>any damage to the existing structure and installations, charges including theoperation of valves,<br>conveyance and hire charges of tools and as per the direction of the department officers

100.55.4:Supplying and stacking for measurement of filter sand having effective size 0.45 to 0.70 mm and uniformity coefficient 1.30 to 1.7, of specific gravity in the range of 2.55 - 2.65 and hard and clean, free from clay, dust and other impurities including cost of materials, labour charges and conveyance of materials up to 5 km and as per the directions of the department officers etc. complete and as per CPHEEO specification.

100.55.1:Supplying of 2 to 6 mm and 6 to 12 mm size fine pebble (pebbles shall be hard, clean, free from clay, dust and other impurities), stacking in standard heaps for measurement including cost, conveyance up to 5 km and labour charges for stacking, spreading, testing and as per the directions of the department officers etc. complete as per CPHEEO specifications.

100.55.2:Supplying of 12 to 20mm size pebble (pebbles shall be hard, clean, free from clay, dust and other impurities), stacking in standard heaps for measurement including cost, conveyance up to 5km and labour charges for stacking, spreading, testing and as per the directions of the department officers etc complete and as per CPHEEO specification.

100.55.3:Supplying of 20 to 40 mm pebble (pebbles shall be hard, clean, free from clay, dust and other impurities), stacking in standard heaps for measurement including cost, conveyance up to 5 km and labour charges for stacking, spreading, testing and as per directions of the department officers etc. complete and as per CPHEEO specification.

OD1775/2024-2025:Providing additional Conveyance charge for the filter media materials(Rate approved by CE(NR) of estNo:2018/9432,Corrected for GST)

100.98.223:Supply of PVC Pipe, 8kg/cm2, 90mm Dia.

100.98.222:Supply of PVC Pipe, 8kg/cm2, 75mm Dia.

OD1778/2024-2025:Conveying and laying 90mm PVC pipe @30cm C/C and providing 12mm holes on the PVC pipe at 15cm C/C below filter media for collecting filtered water.

OD1779/2024-2025:Conveying and laying 75 mm PVC pipe @30 C/C and providing 3 Mm holes on the PVC pipe @10cm C/C below filter media for air blower

4.1.2:Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level:1:1/2:3 (cement : 11/2 coarse sand : 3 graded stone aggregate 20 mm nominal size)

Bidder Name

M MAHESH