Maintenance and upkeep of sprinkler and drip irrigation

Amount

Maintenance of the existing Popup spray sprinkler system/ ImPact sprikler system by cleaning the sprinkler bodies like filter screen choke removal, removal of nozzle choking ( removal of chokes formed by silt and salt , cleaning any other foreign material including sludge ), spring adjustment in impact sprinkler for smooth movement and arc adjustment, finally washing by the clean water , refixing the sprinkle system in original position for smooth functioning etc., including cleaning cleaning of filter complete as directed by Engineer-in-charge. (Note:(1) Totally 850 nos . of sprinker system to be cleaned , Hence, 850 x 12 months=10200 nos.

Maintenance of the existing Micro snap fit/Micro spinner/Drip emitter system by removal of chokes formed by silt and salt, cleaning any other foreign material including cleaning of pin connector,and washing in the clean water , refixing the above system in original position for smooth functioning etc., complete as directed by Engineer-in-charge.(Note: (1) Total area convered under this drip irrigation system is 18000 sqm by existing 1000 nos. of Drip emitter/Micro snap fit/micro spinner system at different locations of NFC and to be cleaned every fortnightly . (2) Hence, 1000 nos x 12 months=12000 nos.)

Maintenance of Existing GI Garden lines

Removing of existing damaged/corroded unserviceable MS/GI pipe lines by unscrewing or cutting , transporting to the site shown as directed by Engineer-in-charge.

Size: Upto 25 mm

Size: 40 mm to 50 mm

Size: 80 mm to 100 mm

Size: 150 mm to 200 mm

Laying of MS/GI pipe lines including reection, screwing of all services as directed by Engineer-in-charge.

Size: Upto 25 mm

Size: 40 mm to 50 mm

Size: 80 mm to 100 mm

Size: 150 mm to 200 mm

Welding of pipes ie., MS/GI of all services as directed by Engineer-in-charge.

Weld joint upto 25 mm dia

Weld Joint 40 mm to 50 mm dia

Weld joint 80 mm to 100 mmdia

Weld joint 150 mm to 200 mm dia

Removing of all types of pipe fittings,metres,spool pieces etc., by cuttinhg/screwing as directed by Engineert-in-charge.

Size: Upto 25 mm

Size: 40 mm to 50 mm

Size: 80 mm to 100 mm

Size: 150 mm to 200 mm

Fixing of pipe fittings /meters/valves/spool pieces for all tpyes of pipes and services,which includes cutting of rubber gasket as directed by Engineer-in-charge.

Size: Upto 25 mm

Size: 40 mm to 50 mm

Size: 80 mm to 100 mm

Size: 150 mm to 200 mm

Maintenance of existing PVC Garden lines /Sprinkler system

Supplying, laying & commissioning in position PVC pipe of Finolex/Supreme/Sudhakar/Prince make conforming to IS:4985:2000 and suitable for withstanding minimum 6kg/cm2 working pressures with all fittings and accessories e.g. couplings, tees, bends, reducers, screwed adapters, flanged tail pieces,Solvent Cement etc. as directed by Engineer-in-charge.

50 mm dia

40mm dia

Supplying, laying & commissioning Sprinklers and other accessories of Rain bird/Weather matic/Hunter/Automat make suitable to deliver irrigation water supply network with working pressure of 2.8kg/cm2 to 3.8kg/cm2 complete as dircted by Engineer-in-charge.

Impact Pop Up sprinkler arc adjustable from 20° to 340°, full- or part-circle operation, capable of covering Radius: 6.50 to 12 m

Popup sp spary bodies with hand adjustable rotary nozzle capable of covering an area of 5 to 7.3 m

3/4" Pop up Connecting Swing joint Assembly made with wall thickness of 1.9 to 2.3 mm and should withstand working pressure upto 5.5 kg/cm² .

1/2" Pop up Connecting Swing joint Assembly made with wall thickness of 1.9 to 2.3 mm and should withstand working pressure upto 5.5 kg/cm²

Service saddle of SAB/AQVA STAR /Any other approved make with varying size of 50-40 mm x 20mm.

Earth work excavation over areas Earthwork excavation by mechanical means/manual means over areas for all depths in all soils other than soft and hard rock and including dewatering if necessary, dressing the bottom to the required levels, back filling with approved excavated earth in layers not exceeding 250mm, leveling watering, consolidating, clearing the areas involving excavation of all grass, rank vegetation, shrubs, bushes, cutting of trees upto 300mm girth measured at 1.0mtr above ground level, disposing the surplus excavated materials within a distance of 1KM etc.

P PASUPATHINATHAN (BID ID -3157302)