Annual Plan-2025-2026/PALA MUNICIPALITY-347/26 Puthenpallikkunnu Drinking water project

filter

OD375671/2025-2026:Design, fabrication, supply, installation and commissioning of Dual Media Pressure Filter having shell thickness 8mm and dish 10mm with epoxy coating outside and GRP lining inside with suitable diameter and height, with manhole and cover for easy inspection at top and an opening provision for media removing arrangement at bottom side with dummy arrangement, capable of discharging water at 3.5 litres per second with a capacity to withstand the operating head which is necessary to deliver water to the pumping main with best quality suitable size Butterfly/Multiport valve for easy backwashing, rinsing and filtering. The Scope of Works includes all related mechanical and pumping works and interconnection of the system at inlet and outlet with the pumping main, bypass arrangement, providing backwash facility, etc. The unit should withstand an internal pressure of 10kg/cm2. All the metallic parts shall be painted with approved quality anti-corrosive paint. The unit should be so installed at suitable point that the operation and maintenance is easy. Piping 100mm MS, 100mm pneumatically activated butterfly valves and SS liquid-filled pressure gauge. Filter media is of grades quartz sand (8-16 & 16-30 mesh), Anthracite with 2 years warranty period (with average 8 hour pumping hours per day), including providing pneumatically controlled butterfly valves with activator, Air Compressor and PLC Panel for dual media Pressure Filter unit for operating system. The system should be compatible with site conditions and other units including motor pump sets. The whole installed system shall be under guarantee for 2 years from the date of commissioning. The Technical Details including drawings and Specifications of the filter unit and accessories, O & M manual with guidelines for troubleshooting shall be submitted in two sets and trial run should be conducted as per the direction of Departmental Officers.

50.2.25.1:Filling with contractor's own earth ( excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20 cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift up to 1.5 m as per direction of site Engineer-in-charge

5.1.3:Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level:1:2:4 ( 1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

5.22.6:Steel reinforcement for R.C.C work including straightening, cutting, bending, placing in position and binding all complete upto plinth levelThermo - Mechanically Treated bars of grade Fe-500D or more

50.10.1:Steel work in built up G I tubular ( round, square or rectangular hollow tubes etc.) trusses etc., including cutting, hoisting,fixing in position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete

OD383327/2025-2026:Splaying and fixing GI weld mesh of size 25x25x3.5 mm including welding to existing frame work,painting and conveyance etc.complete.

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