MAINT OR REPAIRS TO EXTERNAL WATER SUPPLY SYSTEM AT PANGODE MILITARY STATION TRIVANDRUM

Amount

Excavation in trenches not exceeding 1.5 mtr wide and not exceeding 1.5 mtr in depth and getting out in hard/dense soil for removing/laying of DI/UPVC pipes.

Returning filling in including spreading, levelling, watering, well ramming in layers not exceeding 25cm in soil.

Removing excavated soil to a distance not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5mtr above the sorting point.

S& F in repair cast iron sluice valve 150mm dia bore heavy duty with steel spindle and bronze gate and seating rings both end flanged and drilled comprising IS 780 of 1984 type PN 1.6 ISI marked including suitable rubber gasket joints, grid packings with suitable nuts and bolts and grouting materilas including taking down old UNSV one from site of work complete all as specified and directed

All as per ser item No. 4 here-in-before but 100mm dia

All as per ser item No. 4 here-in-before but 80mm dia

Taking down old unserviceable non return valve, S&F non return valve cast iron of size 100mm dia flanged, class PN 1.0 including nuts bolts, washer and gasket complete with by pass arrangement complete all as specified and directed.

All as per ser item No. 7 here-in-before but 80mm dia

Taking out old existing CI /GI mains 150mm bore dia (including all fittings) with spigot and socket ends and fittings for re-use in the work and removing unserviceable pipes and fittings from site complete all as specified and directed. Note: Earth work excavation and return filling will be measured and paid seperately

All as per ser item No. 9 here-in-before but 100mm bore dia .

All as per ser item No. 9 here-in-before but 80mm bore dia .

Supply and laying of medium grade galvanised iron water pipe 150mm bore dia in trenches including testing complete all as specified and directed.

All as per ser item No. 12 here-in-before but 100mm dia bore

All as per ser item No. 12 here-in-before but 80mm dia bore

Relaying/re-fixing of old serviceable galvanised iron water pipe 150mm dia bore in trenches including cleaning of pipes as required and testing complete all as specified and directed.

All as per ser item No. 15 here-in-before but 100mm bore dia

All as per ser item No. 15 here-in-before but 80mm bore dia

Taking up / down old GI/PP-R tubing 20mm bore dia connection including clearing (from trenches) complete all as specified and directed. Note: Earth work excavation and return filling will be measured and paid seperately

All as per ser item No. 18 here-in-before but 25mm bore dia

All as per ser item No. 18 here-in-before but 40mm bore dia

All as per ser item No. 18 here-in-before but 50mm bore dia

Supply and fix 3-layer PP-R Polypropylene random copolymer concealed pipe,20mm outer dia SDR 7.4 (PN-16) VU stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R plain & brass threaded polypropylene random fittings laid in trenches or fixed to walls and ceiling or laid in floor complete all as specified and directed

All as per srl item No 22 here-in-before but outer dia 25mm.

All as per srl item No 22 here-in-before but outer dia 40mm.

All as per srl item No 22 here-in-before but outer dia 50mm.

All as per srl item No 22 here-in-before but outer dia 90mm.

Taking down old unserviceable gate valve/Ball Valve of size 20/25/40/50 mm bore complete.

Supply and fix PP-R gate valve (brass insert) for 50 mm dia pipe as per requirement of the site all as specified and directed.

Supply and fix PP-R ball valve (brass insert) for 40 mm dia pipe as per requirement of the site all as specified and directed.

Supply and fix PP-R ball valve (brass insert) for 25 mm dia pipe as per requirement of the site all as specified and directed.

Supply and fix PP-R ball valve (brass insert) for 20 mm dia pipe as per requirement of the site all as specified and directed.

S&F in repair gun metal gate valve with ISI mark IS-778 Class-I of size 50mm dia wheel head screwed both ends suitable for fitting of UPVC pipe.

All as per ser item No. 32 here-in-before but size 40mm dia

All as per ser item No. 32 here-in-before but size 25mm dia

All as per ser item No. 32 here-in-before but size 20mm dia

S&F in replacement of CI foot valve flange , type of 100mm dia with flap & weight plate sheet and jointing with & including rubber gasket 6mm thick including 12mm dia, 50mm long bolts with nuts & washers complete all as specified and directed.

Repair of valve chamber of size1200x1200x1200mm (internal diamension).by cleaning and removing small bushes inside and surrounding the valve chamber and necessary brick works, plastering, in cement mortaar 1:4 white washing inside and out side, including dismantling of unserviceable MS sheet cover, S&F new MS sheet cover 3mm thick with two coat of synthetic enamel paint over a coat of red oxide to steel surface and locking arrangements, including necessary welding complete all as directed.

All as per ser item No. 37 here-in-before but of size 900x900x1200mm.

All as per ser item No. 37 here-in-before but of size 600x600x750mm.

Cleaning the valve chamber of size 1200x1200x1200mm by removing water, bushes and any other unwanted materials and painting the MS sheet cover top and bottom with two coat synthetic enameled paint over a coat of red oxide primer and brick wall portion inside and outside with two coat of anti fungal paint all as directed

All as per ser item No. 40 here-in-before but of size 900 x 900x1200mm

All as per ser item No. 40 here-in-before but of size 600x600x750mm

Dismantling the mono block/centrifugal pump set 20/15 HP capacity by opening nuts, bolts and washer from mounting channel and also dismantling suction and discharge pipe for carring out pump repair and rewinding of motors including transportation to workshop complete all as directed.

All as per ser item No. 43 here-in-before but pump set of 7.5 / 5 HP capacity.

M&L for opening up 20 HP motor carefully and removing burnt windings from slots, cleaning the slots carefully, re-winding the stator winding with appropriate gauge of copper winding wire as recommended by manufacture including all type of insulating materials, testing and commissioning complete all as directed.

All as per ser item No. 45 here-in-before but for 15 HP motor.

All as per ser item No. 45 here-in-before but for 7.5 HP motor.

All as per ser item No. 45 here-in-before but 5 HP motor .

Disconnection and taking down old UNSV star delta starter of any size and type and S&F new fully automatic star-delta starter at 415 volts, 3 phase having operating relay range-20 to 32 Amps enclosed in sheet metal enclosure complete including all fixing arrangement and making electrical connections, suitable for 20 HP motor complete all as directed.

All as per ser item No. 49 here-in-before but having relay range-13 to 21 Amps and suitable for 15 HP motor

All as per ser item No. 49 here-in-before but having relay range-9 to 14 Amps and suitable for 7.5/5 HP motor,

Supply and fix in repair pressure gauge 100mm dia siphon tube and brass cock complete all as directed

Removing grass and bushes growing in water supply installation Location No. 1, Over head tank and pump house area at PTP Nagar (Approximate Area 600 Sqm) complete all as specified and directed by the Engr-in-Charge. NOTE: Unit rate quoted deemed to include to keep installations neat and clean through out the period of contract.

Removing grass and bushes growing in water supply installation Location No. 2, Poojapura Pump House and over head tank area(Approximate Area 800 Sqm) complete all as specified and directed by the Engr-in-Charge. NOTE: Unit rate quoted deemed to include to keep installations neat and clean through out the period of contract.

Removing grass and bushes growing in water supply installation Location No. 3, Over Head Tank at MAP Site 'A' and flag staff house area (Approximate Area 200 Sqm) complete all as specified and directed by the Engr-in-Charge. NOTE: Unit rate quoted deemed to include to keep installations neat and clean through out the period of contract.

Removing grass and bushes growing in water supply installation Location No. 4, 36 ORs Pump House Area (Approximate Area 400 Sqm) complete all as specified and directed by the Engr-in-Charge. NOTE: Unit rate quoted deemed to include to keep installations neat and clean through out the period of contract.

Removing grass and bushes growing in water supply installation Location No. 5, Main pump house at pangode area (Approximate Area 1000 Sqm) complete all as specified and directed by the Engr-in-charge. NOTE: Unit rate quoted deemed to include to keep installations neat and clean through out the period of contract.

Dismantling and opening up 20HP mono block/centrifugal pumpset carefully and cleaning the impellers, greasing the bearings replacing damaged bearings if any, replacing the complete gaskets, reassembling the pumpset testing and commissioning complete all as directed

All as per ser item No. 58 here-in-before but for 15 HP monoblock pump set

All as per ser item No. 58 here-in-before but for 7.5 HP monoblock pump set

All as per ser item No. 58 here-in-before but for 5 HP monoblock pump set

M&L for wire mesh covering with suitable clamps for air vent pipes and over flow pipes of size 4" all as directed

All as per ser item No. 62 here-in-before but of size 6"

M&L for preparation of rust surface and applying two coat of approved colour of enamel paint over a coat of red oxide primer on 20HP centrifugal pump set / 20 HP mono block pumpset including painting to mounting channel, NRV suction and delivery pipes complete including numbering MES/SM No complete all as specified and directed.

All as per ser item No. 64 here-in-before but 15HP Monoblock pump set

All as per ser item No. 64 here-in-before but 7.5/5HP Monoblock pump set

Supply and Laying, connecting and testing CI Pipes of size 150mm dia with spigot and socket ends centrifugally cast, class LA, in any length, laid in trenches including taking out existing unserviceable CI pipe from trench , etc complete all as specified and directed

All as per ser item No. 67 here-in-before but of size 100mm dia

All as per ser item No. 67 here-in-beforebut of size 80mm dia

M&L in repair for water level indicator for semi UG sump 1 lakh Ltrs capacity at pump house, preparation of rust surface applying two coats of synthetic enamelled paint over a coat of red oxide primer and marking of scales inicluding replacement of steel rope, copper float, wheels and upllies, caliberated scales etc including marking the caliberated scales for quantity of water available in the UG sump all as specified and directed

M&L for Earthing complete in replacement with galvanised iron mild steel earth plate electrode 60 cm x 60 cm x 6 mm thick burried directly in ground (earth pit not less than 2.25 mtrs deep below ground level) with top edge of the plate not less then 1.5 meters below normal ground level, connected to galvanised iron strip 32x6mm as earthing lead by means of bolts, nuts, check nuts and washers og galvanised iron or steel all as shown in electrical plate No 3 connected to earthing test point all as specified or indicated including testing on completion.

M&L for providing run lead joints on pipe line of size 150mm dia including washers, nuts & bolts complete including taking down existing materials from joints , etc complete all as specified and directed.

All as per ser item No. 72 here-in-before but pipe line size 100mm dia

All as per ser item No. 72 here-in-beforebut pipe line size 80mm dia

T C KARUNANITHI