O and M Water Supply Schemes AMC RWSS to Kodumbu panchayath Leak rectification of various pipe lines and allied works for the year 2023 2024 AMC Kodumbu panchayath Pipeline Work

Amount

working charges

100.47.1.1:Leak rectification work in 32mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the remaining portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe to the site, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or any available joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and without causing any damages to the existing utilities and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, lighting, watching, ribbon fencing, traffic controlling etc., complete as per the direction of Departmental officers including the cost of pipe and uPVC specials; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: All Socketed Jointing.

100.47.1.2:Leak rectification work in 40mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the remaining portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe to the site, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or any available joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and without causing any damages to the existing utilities and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, lighting, watching, ribbon fencing, traffic controlling etc., complete as per the direction of Departmental officers including the cost of pipe and uPVC specials; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: All Socketed Jointing.

100.47.1.3:Leak rectification work in 50mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the remaining portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe to the site, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or any available joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and without causing any damages to the existing utilities and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, lighting, watching, ribbon fencing, traffic controlling etc., complete as per the direction of Departmental officers including the cost of pipe and uPVC specials; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: All Socketed Jointing.

100.47.1.4:Leak rectification work in 63mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the remaining portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe to the site, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or any available joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and without causing any damages to the existing utilities and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, lighting, watching, ribbon fencing, traffic controlling etc., complete as per the direction of Departmental officers including the cost of pipe and uPVC specials; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: All Socketed Jointing.

100.47.1.5:Leak rectification work in 75mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the remaining portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe to the site, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or any available joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and without causing any damages to the existing utilities and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, lighting, watching, ribbon fencing, traffic controlling etc., complete as per the direction of Departmental officers including the cost of pipe and uPVC specials; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: All Socketed Jointing.

100.47.1.6:Leak rectification work in 90mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the remaining portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe to the site, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or any available joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and without causing any damages to the existing utilities and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, lighting, watching, ribbon fencing, traffic controlling etc., complete as per the direction of Departmental officers including the cost of pipe and uPVC specials; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: All Socketed Jointing.

100.47.2.1:Leak rectification work in 90mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earth work excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the balance portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or repairable joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and refilling the trenches in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, without causing any damages to the existing utilities, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, lighting, ribbon fencing, watching, traffic control etc., complete as per the direction of Departmental officers, including the cost of pipe & specials but excluding the cost of C.I.R. Joints; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: Socket & C.I.R. Jointing.

100.47.2.2:Leak rectification work in 110mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earth work excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the balance portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or repairable joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and refilling the trenches in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, without causing any damages to the existing utilities, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, lighting, ribbon fencing, watching, traffic control etc., complete as per the direction of Departmental officers, including the cost of pipe & specials but excluding the cost of C.I.R. Joints; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: Socket & C.I.R. Jointing.

100.47.2.3:Leak rectification work in 140mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earth work excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the balance portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or repairable joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and refilling the trenches in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, without causing any damages to the existing utilities, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, lighting, ribbon fencing, watching, traffic control etc., complete as per the direction of Departmental officers, including the cost of pipe & specials but excluding the cost of C.I.R. Joints; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: Socket & C.I.R. Jointing.

100.47.2.4:Leak rectification work in 160mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earth work excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the balance portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or repairable joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and refilling the trenches in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, without causing any damages to the existing utilities, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, lighting, ribbon fencing, watching, traffic control etc., complete as per the direction of Departmental officers, including the cost of pipe & specials but excluding the cost of C.I.R. Joints; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: Socket & C.I.R. Jointing.

100.47.2.5:Leak rectification work in 180mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earth work excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the balance portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or repairable joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and refilling the trenches in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, without causing any damages to the existing utilities, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, lighting, ribbon fencing, watching, traffic control etc., complete as per the direction of Departmental officers, including the cost of pipe & specials but excluding the cost of C.I.R. Joints; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: Socket & C.I.R. Jointing.

100.47.2.6:Leak rectification work in 200mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earth work excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the balance portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or repairable joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and refilling the trenches in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, without causing any damages to the existing utilities, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, lighting, ribbon fencing, watching, traffic control etc., complete as per the direction of Departmental officers, including the cost of pipe & specials but excluding the cost of C.I.R. Joints; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: Socket & C.I.R. Jointing.

100.47.3.7:Leak rectification work in 250mm uPVC (Class 2 to 6) pipeline including detecting and locating leak, earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, cutting the pipe diametrically perpendicular to the axis of pipeline without causing any damages to the balance portion, dismantling and lifting the pipe from trenches, smoothening the cut ends, conveying the new pipe, cutting and lowering new pipe into the trenches, placing in position, aligning the pipe to line and level and jointing the new pipe with the existing pipe with solvent cement or repairable joint and testing the pipeline by operating the valves concerned, and rectifying the defects if noticed and refilling the trenches in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, charges for removing surplus soil from work site, without causing any damage to the existing utilities, including hire for tools and plant, conveyance of tools and materials, bailing out water, providing caution boards, ribbon fencing, lighting, watching, traffic control etc., complete as per the direction of Departmental officers, including the cost of pipe & specials but excluding the cost of C.I.R. Joints; uPVC Pipes and specials shall be of good quality and conforming to relevant standards: C.I.R. Jointing.

100.49.1.3:Rectification of joint leakages in 200mm D.I. Pipe (cutting, removing and laying back a length of 1.0m from one side of the joint) including earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, by cutting and removing a portion of pipe from the damaged joint without causing any damages to the remaining portion of the line and specials and replacing the pipe with mechanical and tyton joint after cleaning the ends, centering the pipe, providing the joints, testing the line to the required test pressure, rectifying any defects noticed and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, removing the surplus soil from the work site, without causing any damages to any other utilities, including the charges of hire and conveyance of tools, plants and materials to the leak site, bailing out water, lighting, watching, ribbon fencing, caution boards, traffic diversion but excluding cost of mechanical joint and as per the direction of departmental officers etc., complete.

100.49.1.4:Rectification of joint leakages in 250mm D.I. Pipe (cutting, removing and laying back a length of 1.0m from one side of the joint) including earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar cutting / concrete cutting, by cutting and removing a portion of pipe from the damaged joint without causing any damages to the remaining portion of the line and specials and replacing the pipe with mechanical and tyton joint after cleaning the ends, centering the pipe, providing the joints, testing the line to the required test pressure, rectifying any defects noticed and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, removing the surplus soil from the work site, without causing any damages to any other utilities, including the charges of hire and conveyance of tools, plants and materials to the leak site, bailing out water, lighting, watching, ribbon fencing, caution boards, traffic diversion but excluding cost of mechanical joint and as per the direction of departmental officers etc., complete.

100.50.1.1:Rectification of leakages of 32mm, 40mm & 50mm G.I. Pipes by replacing lengths up to 1.0m including earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar / concrete cutting, by cutting, removing and stacking the damaged portion from the existing line without causing any damages to the remaining portion and specials and conveying and replacing with G.I. Pipes of suitable size and jointing by thraded coupler and union of suitable size including threading, alignment, laying and jointing to make a water tight joint, testing the line to the required pressure, rectifying any defects noticed and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, removing the surplus soil from the work site, without causing any damages to any other utilities, including the charges hire and conveyance of tools, plant and materials to the leak site, bailing out water, lighting, watching, ribbon fencing, caution boards, traffic diversion, including the cost of specials but excluding cost of pipe and as per the direction of departmental officers etc., complete.

100.50.1.2:Rectification of leakages of 65mm G.I. Pipes by replacing lengths up to 1.0m including earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar / concrete cutting, by cutting, removing and stacking the damaged portion from the existing line without causing any damages to the remaining portion and specials and conveying and replacing with G.I. Pipes of suitable size and jointing by thraded coupler and union of suitable size including threading, alignment, laying and jointing to make a water tight joint, testing the line to the required pressure, rectifying any defects noticed and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, removing the surplus soil from the work site, without causing any damages to any other utilities, including the charges hire and conveyance of tools, plant and materials to the leak site, bailing out water, lighting, watching, ribbon fencing, caution boards, traffic diversion, including the cost of specials but excluding cost of pipe and as per the direction of departmental officers etc., complete.

100.50.1.3:Rectification of leakages of 80mm G.I. Pipes by replacing lengths up to 1.0m including earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar / concrete cutting, by cutting, removing and stacking the damaged portion from the existing line without causing any damages to the remaining portion and specials and conveying and replacing with G.I. Pipes of suitable size and jointing by thraded coupler and union of suitable size including threading, alignment, laying and jointing to make a water tight joint, testing the line to the required pressure, rectifying any defects noticed and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, removing the surplus soil from the work site, without causing any damages to any other utilities, including the charges hire and conveyance of tools, plant and materials to the leak site, bailing out water, lighting, watching, ribbon fencing, caution boards, traffic diversion, including the cost of specials but excluding cost of pipe and as per the direction of departmental officers etc., complete.

100.50.1.4:Rectification of leakages of 100mm G.I. Pipes by replacing lengths up to 1.0m including earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar / concrete cutting, by cutting, removing and stacking the damaged portion from the existing line without causing any damages to the remaining portion and specials and conveying and replacing with G.I. Pipes of suitable size and jointing by thraded coupler and union of suitable size including threading, alignment, laying and jointing to make a water tight joint, testing the line to the required pressure, rectifying any defects noticed and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, removing the surplus soil from the work site, without causing any damages to any other utilities, including the charges hire and conveyance of tools, plant and materials to the leak site, bailing out water, lighting, watching, ribbon fencing, caution boards, traffic diversion, including the cost of specials but excluding cost of pipe and as per the direction of departmental officers etc., complete.

100.50.1.5:Rectification of leakages of 125mm G.I. Pipes by replacing lengths up to 1.0m including earthwork excavation in all kinds of soil for exposing leak portion of the pipe including tar / concrete cutting, by cutting, removing and stacking the damaged portion from the existing line without causing any damages to the remaining portion and specials and conveying and replacing with G.I. Pipes of suitable size and jointing by thraded coupler and union of suitable size including threading, alignment, laying and jointing to make a water tight joint, testing the line to the required pressure, rectifying any defects noticed and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, removing the surplus soil from the work site, without causing any damages to any other utilities, including the charges hire and conveyance of tools, plant and materials to the leak site, bailing out water, lighting, watching, ribbon fencing, caution boards, traffic diversion, including the cost of specials but excluding cost of pipe and as per the direction of departmental officers etc., complete.

100.50.3.4:Rectification of leakages of 100 mm GI Pipes in exposed portions by replacing lengths up to 1.0m by cutting, removing and stacking the damaged portion from the existing line without causing any damages to the remaining portion and specials and conveying and replacing with GI Pipes of suitable size and jointing by three run welding to make a water tight joint, painting the welded portion, testing the line to the required pressure, rectifying any defects noticed, without causing any damages to any other utilities, including the charges hire and conveyance of tools, plant and materials to the leak site, bailing out water, lighting, watching, ribbon fencing, caution boards, traffic diversion, necessary scaffolding including the cost of specials but excluding cost of pipe and as per the direction of departmental officers etc. complete.

OD137194/2023-2024:Repairing the leak of vlave by removing the damaged gland packing, providing new gland packing, bailing out water,operating the valve et complete. 80/100mm GM Valve

OD137195/2023-2024:Repairing the leak of valve by removing the damaged gland packing, providing new gland packing, bailing out water, operating the valve et complete.125/150mm GM Valve/Sluice Valve

OD137196/2023-2024:Repairing the leak of valve by removing the damaged gland packing, providing new gland packing, bailing out water, operating the valve et complete. 200/225mm GM Valve/Sluice Valve.

OD137197/2023-2024:Repairing the leak of valve by removing the damaged gland packing, providing new gland packing, bailing out water, operating the valve et complete. 250/300mm GM Valve/Sluice Valve

OD137198/2023-2024:Repairing air valves -Replacing Ball ,Repairing the leak of Air Valve by removing the damaged ball, providing new ball, bailing out water operating the valve et complete.

100.51.1: Disconnecting water connection from service mains along earthern road without causing any damage to the existing line including charges of earth work excavation in all kinds of soil for exposing connection point including tar cutting / conrete cutting if any, making the disconnection point water tight charging and testing to the required pressure, rectifying any defects noticed and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, removing the surplus soil from the work site, without causing any damages to any other existing utilities, including the charges of hire for tools and plant, conveyance of tools and materials to the leak site, bailing out water, lighting, watching, ribbon fencing, caution boards, traffic diversion but excluding cost of materials and as per the direction of departmental officers etc. complete.

100.51.2:Disconnecting water connection from service mains along Concrete road without causing any damage to the existing line including charges of earth work excavation in all kinds of soil for exposing connection point including tar cutting / conrete cutting, making the disconnection point water tight charging and testing to the required pressure, rectifying any defects noticed and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, removing the surplus soil from the work site, without causing any damages to any other existing utilities, including the charges of hire for tools and plant, conveyance of tools and materials to the leak site, bailing out water, lighting, watching, ribbon fencing, caution boards, traffic diversion but excluding cost of materials and as per the direction of departmental officers etc. complete.

100.56.1:Supplying and fixing 15 / 20 mm PVC public tap after dismantling the damaged tap including all cost of materials, labour charges, hire for tools and as per the direction of the department officers etc complete.

100.57.1:Rectifying the leakages in boring point of public tap connection including earth work excavation in all kinds of soil for exposing the boring point including concrete / tar cutting, dismantling the damaged saddle piece,cutting and removing damaged portion of pipe line,fixing new saddle piece,laying 20/25 mm PVC 10Kg/cm2 pipe in place of damaged portion of pipe and connecting with existing pipe line,testing the line to the required test pressure, rectifying any defects noticed and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, removing the surplus soil from the work site, without causing any damages to any other utilities, including the charges of hire and conveyance of tools, plants and materials to the leak site, bailing out water, lighting, watching, ribbon fencing, caution boards, traffic diversion, including cost of pipe and saddle piece and as per the direction of departmental officers etc. complete.

100.58.1:Rectifying the leakages in vertical pipe of public tap connection including earth work excavation in all kinds of soil for exposing the pipeline including concrete / tar cutting, cutting and removing damaged portion of pipe, fixing new 20/25 mm GI pipe and specials in place of damaged portion of pipe and connecting with existing pipe line, testing the line to the required pressure, rectifying any defects noticed and refilling the trenches using excavated earth in layers not exceeding 20cm depth including consolidating each layers by ramming, watering, removing the surplus soil from the work site, without causing any damages to any other utilities, including the charges of hire and conveyance of tools, plants and materials to the leak site, bailing out water, lighting, watching, ribbon fencing, caution boards, traffic diversion, including cost of pipe and specials and as per the direction of departmental officers etc. complete.

15.43.2:Dismantling manually / by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer -in-Charge:Bituminous road

15.2.2:Demolishing cement concrete manually / by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in-Charge.Nominal concrete 1:4:8 leaner mix ( including equivalent design mix)

100.1.1:Excavating trenches of required width for pipes, cables, etc., including excavation for sockets, and dressing of sides, ramming of bottoms, depth up to 1.5m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20cm in depth, including consolidating each deposited layer by ramming, watering, etc., and disposing of surplus excavated soil as directed, within a lead of 50m, in all kinds of soil.

2.31:Clearing jungle including uprooting of rank vegetation, grass, brush wood, trees and saplings of girth up to 30 cm measured at a height of 1 m above ground level and removal of rubbish up to a distance of 50 m outside the periphery of the area cleared

2.32:Clearing grass and removal of the rubbish up to a distance of 50 m outside the periphery of the area cleared.

OD137199/2023-2024:Providing protection tubeson the valves with DI/AC pipe bit for a length of 1.2 mtr , after necessary earth work excavation and refilling

100.31.2.1:Conveying and fixing C.I. sluice valves (with cap) by providing bolts, nuts, rubber insertions etc., complete, but excluding the cost of the valve (tail pieces, if required, will be paid separately): 80mm diameter, Class II.

100.31.2.2:Conveying and fixing C.I. sluice valves (with cap) by providing bolts, nuts, rubber insertions etc., complete, but excluding the cost of the valve (tail pieces, if required, will be paid separately): 100mm diameter, Class II.

100.31.2.3:Conveying and fixing C.I. sluice valves (with cap) by providing bolts, nuts, rubber insertions etc., complete, but excluding the cost of the valve (tail pieces, if required, will be paid separately): 125mm diameter, Class II.

100.31.2.4:Conveying and fixing C.I. sluice valves (with cap) by providing bolts, nuts, rubber insertions etc., complete, but excluding the cost of the valve (tail pieces, if required, will be paid separately): 150mm diameter, Class II.

100.32.1:Conveying and fixing C. I. Single Acting Air Valve of approved quality with bolts, nuts, rubber insertions etc., complete, but excluding the cost of air valve (tail pieces, if required, will be paid separately): 25mm Single Acting Air Valve.

100.32.2:Conveying and fixing C. I. Single Acting Air Valve of approved quality with bolts, nuts, rubber insertions etc., complete, but excluding the cost of air valve (tail pieces, if required, will be paid separately): 40mm Single Acting Air Valve.

100.32.3:Conveying and fixing C. I. Double Acting Air Valve of approved quality with bolts, nuts, rubber insertions etc., complete, but excluding the cost of air valve (tail pieces, if required, will be paid separately): 50mm Double Acting Air Valve.

100.98.48:Supply of PVC Tap

100.98.1008:Engaging Coolie.

100.98.1009:Engaging Fitter ( grade 1).

OD137200/2023-2024:Supply and fixing 200mm pvc end cap

OD137201/2023-2024:Supply of cost of PVC saddle piece(Average rate of 200/160/140/110/90/75/63/50 mm)

18.16.1:Providing and fixing brass stop cock of approved quality :15 mm nominal bore

18.16.2:Providing and fixing brass stop cock of approved quality :20 mm nominal bore

100.98.435:Supply of CI Air Valve, Conforming to IS 14848 - 2000, Kinetic Air Valve Type DK, Size 50mm.

100.98.439:Supply of CI Air Valve, Conforming to IS 14848 - 2000, Single Orifice, Small Orifice Type S1, Size 15mm.

100.98.440:Supply of CI Air Valve, Conforming to IS 14848 - 2000, Single Orifice, Small Orifice Type S1, Size 25mm.

100.98.442:Supply of CI Air Valve, Conforming to IS 14848 - 2000, Single Orifice, Large Orifice Type S2, Size 20mm.

100.98.444:Supply of CI Air Valve, Conforming to IS 14848 - 2000, Single Orifice, Large Orifice Type S2, Size 50mm.

18.17.1:Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :25 mm nominal bore

18.17.2:Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :32 mm nominal bore

18.17.3:Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :40 mm nominal bore

18.17.4:Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :50 mm nominal bore

18.17.5:Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :65 mm nominal bore

18.17.6:Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :80 mm nominal bore

18.18.2:Providing and fixing ball valve (brass) of approved quality, High or low pressure, with plastic floats complete:20 mm nominal bore

18.18.3:Providing and fixing ball valve (brass) of approved quality, High or low pressure, with plastic floats complete:25 mm nominal bore

100.98.457:Supply of CI Double Flanged Sluice Valve Conforming to IS 14846 - 2000, Sluice Valve with Cap PN 1.6, Size 80mm.

100.98.458:Supply of CI Double Flanged Sluice Valve Conforming to IS 14846 - 2000, Sluice Valve with Cap PN 1.6, Size 100mm.

100.98.459:Supply of CI Double Flanged Sluice Valve Conforming to IS 14846 - 2000, Sluice Valve with Cap PN 1.6, Size 125mm.

100.98.460:Supply of CI Double Flanged Sluice Valve Conforming to IS 14846 - 2000, Sluice Valve with Cap PN 1.6, Size 150mm.

18.31.1.2:Providing and fixing C.I. sluice valves (with cap) complete with bolts, nuts, rubber insertion etc. (the tail pieces if required will be paid separately): 100 mm diameterClass II

18.31.2.2:Providing and fixing C.I. sluice valves (with cap) complete with bolts, nuts, rubber insertion etc. (the tail pieces if required will be paid separately): 125 mm diameterClass II

18.31.3.2:Providing and fixing C.I. sluice valves (with cap) complete with bolts, nuts, rubber insertion etc. (the tail pieces if required will be paid separately): 150 mm diameterClass II

100.98.9:Supply of Lead Wool

18.46.6:Providing and fixing G.I. Union in G.I pipe including cutting and threading the pipe and making long screws etc. complete ( New work):50 mm nominal bore

18.46.8:Providing and fixing G.I. Union in G.I pipe including cutting and threading the pipe and making long screws etc. complete ( New work):80 mm nominal bore

50.4.1.1:Providing and laying in position cement concrete 1:2:4 ( 1 cement : 2 coarse sand : 4 graded stone aggregate 12.5 mm nominal size) up to floor five level excluding the cost of centering, shuttering, finishing for leveling coarse of floor and roof etc.

13.50.4:Applying priming coat:With ready mixed red oxide zinc chromate primer of approved brand and manufacture on steel work (second coat)

100.41.39:Supply, stacking, spreading and consolidating of Quarry Muck in the trench of pipe line, including carriage, loading, unloading & stacking up to any lead.

100.52.S.1:Sub Data for providing Earth filled cement bags including cutting of the Earth, filling, conveying and placing in position.

OD137202/2023-2024:Supply of stone dust for refilling the PWD road side trenches after leak rectification

OD137203/2023-2024:Supply of Nut and Bolts

100.98.42:Supply of GI Socket, 20mm.

OD137204/2023-2024:Supply of GI Threaded coupling 32mm

100.98.31:Supply of GI Threaded Coupling, 40mm.

100.98.32:Supply of GI Threaded Coupling, 50mm.

100.98.33:Supply of GI Threaded Coupling, 65mm.

100.98.34:Supply of GI Threaded Coupling, 80mm.

100.98.36:Supply of GI Threaded Coupling, 125mm.

100.98.38:Supply of GI Union, 100mm.

100.98.39:Supply of GI Union, 125mm.

100.98.40:Supply of GI Union, 150mm.

OD137229/2023-2024:Supply and fixing 15mm GI Plug

OD137230/2023-2024:Supply and fixing 20mm GI plug

OD137231/2023-2024:Supply and fixing 32mm GI plug

OD137232/2023-2024:Supply and fixing 40mm GI plug

OD137233/2023-2024:Supply and fixing 50mm GI plug

OD137247/2023-2024:Supply and fixing 32mm PVC Elbow/Bend

OD137248/2023-2024:Supply and fixing 40mm PVC Elbow/Bend

OD137249/2023-2024:Supply and fixing 50mm PVC Elbow/Bend

OD137250/2023-2024:Supply and fixing 63mm PVC Elbow/Bend

OD137251/2023-2024:Supply and fixing 75mm PVC Elbow/Bend

OD137252/2023-2024:Supply and fixing 90mm PVC Elbow/Bend

OD137253/2023-2024:Supply and fixing 110mm PVC Elbow/Bend

OD137254/2023-2024:Supply and fixing 40mm PVC MTA/FTA

OD137255/2023-2024:Supplying and fixing 50mm PVC MTA / FTA

OD137256/2023-2024:Supplying and fixing 63mm pvc MTA/FTA

OD137257/2023-2024:Supplying and fixing 75mm pvc MTA /FTA

OD137258/2023-2024:Supplying and fixing 90 mm pvc MTA/FTA

OD137259/2023-2024:Supplying and fixing 110mm pvc MTA/FTA

OD137260/2023-2024:Supplying and fixing 160 mm pvc MTA / FTA

OD137261/2023-2024:Supplying and fixing 35/40mm PVC End cap

OD137262/2023-2024:Supplying and fixing 50mm PVC End cap

OD137263/2023-2024:Supplying and fixing 63mm PVC End cap

OD137264/2023-2024:Supplying and fixing 75mm PVC End cap

OD137265/2023-2024:Supplying and fixing 90mm PVC End cap

OD137266/2023-2024:Supplying and fixing 110mm PVC End cap

OD137267/2023-2024:Supplying and fixing of 20 x 100mm B/N

OD137268/2023-2024:Supplying and fixing of 25 x 100 mm B/N

OD137269/2023-2024:Supplying and fixing of 32 x 100mm B/N

OD137270/2023-2024:Supplying and fixing of 40x100mm B/N

OD137271/2023-2024:Supplying and fixing of 50 x 100 mm B/N

OD137272/2023-2024:Supplying and fixing of 65 x 100mm B/N

OD137273/2023-2024:Supplying and fixing of 80 x 150 mm B/N

OD137274/2023-2024:Supplying and fixing of 100 x 100 mm B/N

OD137275/2023-2024:Supplying and fixing 32mm PVC ball valve

OD137276/2023-2024:Supplying and fixing 40mm PVC ball valve

OD137277/2023-2024:Supplying and fixing 50mm PVC ball valve

OD137278/2023-2024:Supplying and fixing 63 mm PVC ball valve

OD137279/2023-2024:Supplying and fixing 75 mm PVC ball valve

OD137280/2023-2024:Supplying and fixing 90mm PVC ball valve

OD137281/2023-2024:Supply and Fixing 32mm MS Saddles/Clamps including Washer,Nut Bolt etc.

OD137282/2023-2024:Supply and Fixing 40mm MS Saddles/Clamps including Washer,Nut Bolt etc.

OD137283/2023-2024:Supply and Fixing 50mm MS Saddles/Clamps including Washer,Nut Bolt etc.

OD137284/2023-2024:Supply and Fixing 65mm MS Saddles/Clamps including Washer,Nut Bolt etc.

OD137285/2023-2024:Supply and Fixing 80mm MS Saddles/Clamps including Washer,Nut Bolt etc.

OD137286/2023-2024:Supply and Fixing 100mm MS Saddles/Clamps including Washer,Nut Bolt etc.

OD137287/2023-2024:Supply and Fixing 125mm MS Saddles/Clamps including Washer,Nut Bolt etc.

OD137288/2023-2024:Supply and Fixing 150mm MS Saddles/Clamps including Washer,Nut Bolt etc.

OD137289/2023-2024:Supply and Fixing 200mm MS Saddles/Clamps including Washer,Nut Bolt etc.

OD137290/2023-2024:Supplying and fixing 250mm MS Saddles/Clamps including Washer, Nut, Bolt etc .

OD137291/2023-2024:Supply and Fixing 300mm MS Saddles/Clamps including Washer,Nut Bolt etc.

OD137292/2023-2024:Supply and Fixing 50mm MS Flange

OD137293/2023-2024:Supply and Fixing 65mm MS Flange

OD137294/2023-2024:Supply and Fixing 80mm MS Flange

OD137295/2023-2024:Supply and Fixing 100mm MS Flange

OD137296/2023-2024:Supply and Fixing 125mm MS Flange

OD137297/2023-2024:Supply and Fixing 150mm MS Flange

OD137298/2023-2024:Supply and Fixing 50mm Washer for flanges and valves

OD137299/2023-2024:Supply and Fixing 65mm Washer for flanges and valves

OD137300/2023-2024:Supply and Fixing 80mm Washer for flanges and valves

OD137301/2023-2024:Supply and Fixing 100mm Washer for flanges and valves

OD137302/2023-2024:Supply and Fixing 125mm Washer for flanges and valves

OD137303/2023-2024:Supply and Fixing 150mm Washer for flanges and valves

OD137304/2023-2024:Supplying and fixing 80mm CID joint with all accesories

OD137305/2023-2024:Supplying and fixing 100mm CID joint with all accesories

OD137306/2023-2024:Supplying and fixing 125mm CID joint with all accesories

OD137307/2023-2024:Supplying and fixing 150mm CID joint with all accesories

OD137308/2023-2024:Supplying and fixing 200mm CID joint with all accessories

OD137309/2023-2024:Supplying and fixing 250mm CID joint with all accessories

OD137310/2023-2024:Supplying and fixing 300mm CID joint with all accessories

OD137311/2023-2024:80 mm dia rubber ring for CID joint

OD137312/2023-2024:100 mm rubber ring for CID joint

OD137313/2023-2024:125mm Rubber ring for CID Joint

OD137314/2023-2024:150mm Dia rubber ring for CID Joint

OD137315/2023-2024:200mm dia rubber ring for CID Joint

OD137316/2023-2024:225mm dia Rubber Ring for CID Joint

OD137317/2023-2024:250mm dia Rubber Ring for CID Joint

OD137318/2023-2024:Supplying and fixing bolt and nut for all type of joints

OD137319/2023-2024:Supplying and fixing 20mm GM Valve

OD137320/2023-2024:Supplying of 15mm GI pipe

OD137321/2023-2024:Supplying of 20mm GI pipe (DLPC 2021-22)

OD137322/2023-2024:Supplying of 25mm GI pipe (medium)(DLPC 2021- 22)

OD137323/2023-2024:Supply of 32mm GI pipe (medium)(DLPC 2021- 22)

OD137324/2023-2024:Supply of 40mm GI pipe (medium)(DLPC 2021- 22)

OD137325/2023-2024:Supply of 50mm GI pipe (medium) (DLPC 2021-22)

OD137326/2023-2024:Supplying of 65mm GI pipe (medium) (DLPC 2021-22)

OD137327/2023-2024:Supply of 80mm GI Pipe (DLPC 2021-22)

OD137328/2023-2024:Supply of 100 mm GI Pipe (DLPC 2021-22)

OD137329/2023-2024:Supply of 125mm GI Pipe (DLPC 2021-22)

100.98.230:Supply of PVC Pipe, 10kg/cm2, 25mm Dia.

100.98.231:Supply of PVC Pipe, 10kg/cm2, 32mm Dia.

100.98.209:Supply of PVC Pipe, 6kg/cm2, 40mm Dia.

100.98.210:Supply of PVC Pipe, 6kg/cm2, 50mm Dia.

100.98.211:Supply of PVC Pipe, 6kg/cm2, 63mm Dia.

100.98.212:Supply of PVC Pipe, 6kg/cm2, 75mm Dia.

100.98.213:Supply of PVC Pipe, 6kg/cm2, 90mm Dia.

100.98.214:Supply of PVC Pipe, 6kg/cm2, 110mm Dia.

100.98.215:Supply of PVC Pipe, 6kg/cm2, 140mm Dia.

100.98.216:Supply of PVC Pipe, 6kg/cm2, 160mm Dia.

100.98.217:Supply of PVC Pipe, 6kg/cm2, 200mm Dia.

OD137330/2023-2024:Temporary disconnection of water connection at the meter point including labour charges for disconnection excluding cost of plug etc.

OD137331/2023-2024:Rectifying the block in the saddle point of public tap including earthwork excavation in all kind of soil for exposing the pipe line ,removing the elbow and pipe , ,rectifying the block inside the tap connection point and resetting the public tap etc.complete as per the direction of departmental officers including the labour charge but excluding the pipe and specials

OD137332/2023-2024:Reconnecting the water connection excluding the cost of specials

100.9.1:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 20 mm nominal outside diameter pipes.

100.9.2:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 25 mm nominal outside diameter pipes.

100.9.3:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 32 mm nominal outside diameter pipes.

100.9.4:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 40 mm nominal outside diameter pipes.

100.9.5:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 50 mm nominal outside diameter pipes.

100.9.6:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 63 mm nominal outside diameter pipes.

100.9.7:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 75 mm nominal outside diameter pipes.

100.9.8:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 90 mm nominal outside diameter pipes.

100.9.9:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 110 mm nominal outside diameter pipes.

100.9.10:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 140 mm nominal outside diameter pipes.

100.9.11:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 160 mm nominal outside diameter pipes.

100.9.13:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 200 mm nominal outside diameter pipes.

100.9.14:Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 250 mm nominal outside diameter pipes.

100.12.1:Conveying and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc., but excluding cost of pipes and fittings for External work: 15mm diameter nominal bore.

100.12.2:Conveying and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc., but excluding cost of pipes and fittings for External work: 20mm diameter nominal bore.

100.12.3:Conveying and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc., but excluding cost of pipes and fittings for External work: 25mm diameter nominal bore.

100.12.4:Conveying and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc., but excluding cost of pipes and fittings for External work: 32mm diameter nominal bore.

100.12.5:Conveying and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc., but excluding cost of pipes and fittings for External work: 40mm diameter nominal bore.

100.12.6:Conveying and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc., but excluding cost of pipes and fittings for External work: 50mm diameter nominal bore.

100.12.7:Conveying and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc., but excluding cost of pipes and fittings for External work: 65mm diameter nominal bore.

100.12.8:Conveying and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc., but excluding cost of pipes and fittings for External work: 80mm diameter nominal bore.

100.12.9:Conveying and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc., but excluding cost of pipes and fittings for External work: 100mm diameter nominal bore.

100.12.10:Conveying and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc., but excluding cost of pipes and fittings for External work: 125mm diameter nominal bore.

100.12.11:Conveying and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc., but excluding cost of pipes and fittings for External work: 150mm diameter nominal bore.

OD137333/2023-2024:Bituminous packing for urgent road repair

100.7.1:Bailing out water with 5HP engine and pump set including conveyance to the site, erecting, dismantling and taking back of engine and pump, cost of fuel lubricating oil and other stores pay of staff etc., complete.

OD214603/2023-2024:Washing OHSR/GLSR using brooms, brushes and bleaching powder by engaging coolies, scrubbing twice, washing and cleaning using fresh water, including side wall, floor slab and columns, disposing the the slurry / waste materials away from the immediate premises and within the initial lead of 50m from the periphery of the tank, without causing any damage to the existing structure and installations, charges including the operation of valves, conveyance and hire charges of tools and as per the direction of the department officers etc. complete.

OD214614/2023-2024:Washing Clarifloculator using brooms, brushes and bleaching powder by engaging coolies, scrubbing twice, washing and cleaning using fresh water, including side wall, floor slab and columns, disposing the the slurry / waste materials away from the immediate premises and within the initial lead of 50m from the periphery of the clari floculator, without causing any damage to the existing structure and installations, charges including the operation of valves, conveyance and hire charges of tools and as per the direction of the department officers etc. complete.

S GIRISH KUMAR

Bidder Name

S GIRISH KUMAR

K KUMARAN