REPAIR/ MAINT AND CLEANING OF RCC OVER HEAD TANK, IRP, DOSING SYSTEM, BOREWELL, PIPE LINES AND CONNECTED ASSETS OF 764 ASC BN UNDER GE (AF) MOHANBARI

Amount

Excavation in trenches not exceeding 1.50 mtr wide but for additional 1.50 mtr (1.50 to 3.00 mtr ) depth or part there of in depth beyond the first 1.50 mtr for taking out / laying of under ground cable, pole, pipe, stay and getting out in soft soil strata including making good to the disbturbed surfaces such as hardstanding, footpath/ pavments complete all as specified and directed.

Excavation in trenches not exceeding 1.50 mtr wide and not exceeding 1.50 mtr deep for taking out/ laying of under ground cable, pole, pipe, stay and getting out in soft soil strata including making good to the disbturbed surfaces such as hardstanding, footpath/ pavments complete all as specified and directed.

Excavation in trenches not exceeding 1.50 mtr wide and not exceeding 1.50 mtr deep for taking out/ laying of under ground cable, pole, pipe, stay and getting out in hard/ dense soil strata including making good to the disbturbed surfaces such as hard standing, footpath/ pavments complete all as specified and directed.

Returning filling in including spreading leveling watering and well ramming in layers not exceeding 25cm spread thickness in any type of soil complete all as specified and directed.

Removing excavated materials not exceeding 50 mtr and depositing where directed at a level not exceeding 1.50 mtr above the starting point complete all as specified and directed.

M&L for boring/ drilling (horizontally) hole manually under existing road, pavement, hard standing (maximum 10mtr in width) suitable for passing water pipe line upto 110mm complete all as specified and directed.

Taking down old GI/MS/PPR pipe with fitting of 15 mm bore from surface/ trench including dismantling and removing (except serviceable pipe for re-fixing) materials from work site complete all as specified and directed. (Note:- Earth work shall be measured & paid separetely)

All as per item No-7 above but pipe of 20mm bore dia.

All as per item No-7 above but pipe of 25/32 mm bore dia.

All as per item No-7 above but pipe of 50/63 mm bore dia.

All as per item No-7 above but pipe of 80/90mm bore dia.

All as per item No-7 above but pipe of 100/110mm bore dia.

Supply, laying, jointing and testing 3 layer PPR Polypropylene random copolymer pipes UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply all PPR plain and brass threaded polypropylene random fittings laid in trenches / wall/ surface including all fittings of outer dia 25mm, SDR 7.4 (PN-16) complete all as specified and directed. (Note:- Earthwork shall be measured & paid separetely)

All as per item No. 13 above but pipe of 32 mm, SDR 7.4 (PN-16).

All as per item No. 13 above but pipe of 63 mm, SDR 11 (PN-10).

All as per item No. 13 above but pipe of 90 mm, SDR 11 (PN-10).

All as per item No. 13 above but pipe of 110 mm, SDR 11 (PN-10).

Supply, laying, jointing and testing mild steel galvanised water tubing 15mm bore, medium grade including all GI fittings laid in trenches/ wall/ surface complete all as specified and directed. (Note:- Earthwork shall be measured & paid separetely)

All as per item No. 18 above but pipe of 20 mm bore

All as per item No. 18 above but pipe of 25 mm bore

All as per item No. 18 above but pipe of 50 mm bore

All as per item No. 18 above but pipe of 80 mm bore

All as per item No. 18 above but pipe of 100 mm bore

Supply, laying, jointing and testing mild steel galvanised water tubing 80 mm bore, medium grade including all GI fittings fitted to PS over head water tank installed at 40' to 50' height staging including taking out old complete all as specified and directed. (Note:- Cost for arrangement of staging/ working platform is deemed to be included in the item quoted rate).

All as per item No. 24.00 above but pipe of 100 mm bore

Cutting of existing CI/ GI pipe 80 mm in position for insertion and including of new tee of size 80 mm complete all as specified & directed.

Cutting of existing CI/ GI pipe 100 mm in position for insertion and including of new tee of size 100 mm complete all as specified & directed.

Material & labour for repairing of 100 mm CI pipeline by filling lead joint with all jointing materials and gland packing (wherever necessary) to make joint water leak proof including burning out lead joint in position complete including necessary earth work as required complete all as specified & directed.

Supply & fixing PPR Gate Valves (Brass insert) of 25 mm outer dia including taking out old unservicble valve complete all as specified and directed.

Supply & fixing PPR Gate Valves (Brass insert) of 32 mm outer dia including taking out old unservicble valve complete all as specified and directed.

Supply & fixing PPR Gate Valves (Brass insert) of 63 mm outer dia including taking out old unservicble valve complete all as specified.

Supply only calcium hypochlorite granular form of 55% to 65% active granular chlorine packed in 45 kg PVC sealed container suitable for treatment of water for drinking purpose complete all as specified and directed .Make as approved by GE.

Material and labour for mild steel bracing/ channel/ angle iron support fabricated from structural steel sections including MS Nuts, bolts and washers with necessary welding, bending cold or hot, drilling holes for bolts in any shape or size including two coats of black bituminous paint including taking down existing complete all as specified and directed.

Supply & fixing in replacement of cast iron sluice valve of 80mm bore, class PN 1.6, ISI marked with iron wheel head both end flanged, brass spindle any pattern with check nut complete with jointing material nut, bolt and washers etc.complete all as specified and directed.

All as per item No. 34.00 above but valve of 100 mm bore

Supply & fixing in replacement of 20 mm bore, gun metal gate valve, yoke type, full opening with iron wheel head, screwed both ends, ISI marked complete all as specified and directed.

All as per item No. 36.00 above but valve of 25 mm bore

All as per item No. 36.00 above but valve of 50 mm bore

Supply & fixing in replacement of cast iron non return sluice valve of size 100 mm with flanged ends, brass spindle any pattern with check nut confirming to IS including jointing material, nuts, bolts, and washer etc complete all as specified.

Material and labour for construction of valve pit chamber of internal dimension 40 x 40 x 40 cm with sub class 'B' bricks in CM (1:4) and 10 mm thick plastering in CM (1:4), PCC (1:4:8), type D2 (using 40 mm graded broken stone aggregate) as in foundation lean concrete, PCC (1:3:6), type C1 (using 20 mm graded broken stone aggregate) as in bedding and copping MS frame with 40 x 40 x 5 mm angle iron and 3 mm thick MS sheet cover plate with locking arrangements, hinges and two coats of synthetic enamel paint over one coat of red oxide primer including preparation of surface, two coats of white wash on plastered surface (exposed to view) including necessary excavation in soft/ loose soil, returning filling in and removal of surplus soil to a distance not exceeding 50 m complete including dismantling of old all as specified and directed.

Material and labour for construction of valve pit chamber of internal dimension 90 x 90 x 90 cm with sub class 'B' bricks in CM (1:4) and 10 mm thick plastering in CM (1:4), PCC (1:4:8), type D2 (using 40 mm graded broken stone aggregate) as in foundation lean concrete, PCC (1:3:6) type C1 (using 20 mm graded broken stone aggregate) as in bedding and copping MS frame with 40 x 40 x 6 mm angle iron 5 mm thick MS sheet cover plate with locking arrangements, hinges and two coats of synthetic enamel paint over one coat of red oxide primer including preparation of surface, three coats of white wash on plastered surface (exposed to view) including necessary excavation in soft/ loose soil, returning filling in and removal of surplus soil to a distance not exceeding 50 m complete including dismantling of old all as specified and and directed.

M&L for cleaning of internal surface of existing 10000 Gallons capacity steel PS OH tank installed at height of 40' to 50' by scraping with brush, rubbing down scales, dirt, sludge etc and washing with clean water using bleaching powder/ caustic soda and taking all rubbish from the tank, removing the same to a distance not exc 50 m and applying filling compound to fill joint gap internally including two coat of black bituminuos anti corrosive paint suitable for drinking water over a coat of red oxide primer internally after cleaning complete all as specified and directed.

M&L for cleaning external steel surface of existing 10000 Gallons capacity PS OH tank installed at height of 40' to 50' by complete removal of old paints/ rust by applying detergent/ scrapping/ wire brushing/ sand papering and washing with clean water and painting of external surface of PS OH tank complete with two coats of aluminium paint over one coat of red oxide primer including painting of complete structure, sluice valve and connected all pipe lines from tank to borewell as per colour coding complete all as specified and directed. (Note- Work shall be carried out in safety norms and all safety should be provided by the contractor and no extra claim shall be admissable at later stage.)

Supply and fix in replacement of CI venturi of size 100 mm dia having arrangement for dosing of bleaching/ altoch Gp solution complete suitable for BP dozer all as specified and directed.

Material and labour for isolation of electric power supply from the existing system lifting of submersiable motor pump set (upto 20 HP, 3 phase, 415 volts, 50 Hz) from existing borewell of depth upto 45 mtr with the help of chain pully including submersible cable, MS/ GI pipe by unscrewing nut and bolts from flange joints and staking at site for refixing after requisite repair, dismantling of motor pump set, transporting to local civil workshop and taking back to site after greasing, repairing/ reassembling and lowering the submersible pump with connected items to its original position complete including painting with two coat of synthetic enamel paint (1st quality) over a coat of zinc chrome primer including testing on completion complete all as specified and directed. Note:- (a) Spare parts required for repair shall be measured seperately under respective items. (b) Cost of minor parts such as nut, bolt & washers are deemed to be included in quoted rate.

M&L for opening the burned motor upto 20 HP, cutting of all burned winding, cleaning of all parts and rewinding with new super enameled winding wire copper of suitable /existing gauge including all insulating materials such as PVC copper cable lead, glass fiber sleeves, cotton tape, insulation paper and applying insulating varnish and heating in heat chamber at appropriate temperature complete all as specified and directed.

Supply & fixing in replacement of bowl suitable for upto 20 HP submersible pump.

Supply & fixing in replacement of impeller suitable for upto 20 HP submersible pump.

Supply & fixing in replacement of bushing suitable for upto 20 HP submersible pump.

Supply & fixing in replacement of neck ring suitable for upto 20 HP submersible pump.

Supply & fixing in replacement of SS shaft suitable for upto 20 HP submersible pump.

Supply & fixing in replacement of key suitable for upto 20 HP submersible pump.

Supply & fixing in replacement of coupling suitable for upto 20 HP submersible pump.

Supply & fixing in replacement of thrust bearing suitable for upto 20 HP submersible pump.

Supply & fixing in replacement of sar clip suitable for upto 20 HP submersible pump.

Supply & fixing in replacement of upper & lower housing suitable for upto 20 HP submersible pump.

Supply & fixing in replacement of automatic star delta motor starter suitable for 415 volts, 50 Hz, 3 phase, upto 20 HP submersible pump set including single phase preventor, over load relay protection, timer, contactors, pannel mounting type complete all as specified.

Supply and fixing in replacement of PVC insulated copper conductor submerssible cable, FR type, water proof of size 10 sqmm, 3 core, 1100 volts grade, multistranded complete all as specified and directed.

Material & labour for prepration of internally old painted steel/ iron surfaces of pressure filter & oxidation chamber by scrapping and cleaning of internal surfaces and applying two coats of black bituminious anti corrosive paint suitable for drinking water complete all as specified and directed.

Material & labour for complete opening of iron removal pressure filter & oxidation chamber of capacity 10000 GPH and taking out existing filter media (sand, gravells), stainers and nozzles, removing and depositing filter media to a distance not exceedding 50 m including necessary repair/ welding to make the pressure filter vessels complete water leak proof for improving the strength and finally reassembling the pressure filter including filling of new stainer, gravells & sand in existing position including replacement of worn out gasket and nut bolts and washers complete all as directed. Note:- Nozzles, stainers, gravells shall be measured and paid seperatley.

Supply and fixing PVC push type/ threaded type strainer suitable for filteration plant complete all as specified and directed.

Supplying and filling in layers special coarse sand per existing size suitable for use in filteration plant complete all as and directed.

Supplying and filling in layers new washed, cleaned, dust free, graded gravells filter media of grading 25 mm to 20 mm size suitable for use in filteration plant complete all as specified & directed.

Supplying and filling in layers new washed, cleaned, dust free, graded gravells filter media of grading 20 mm to 12 mm size suitable for use in filteration plant complete all as specified & directed.

Supplying and filling in layers new washed, cleaned, dust free, graded gravells filter media of grading 12 mm to 06 mm size suitable for use in filteration plant complete all as specified & directed.

Supplying and filling in layers new washed, cleaned, dust free, graded gravells filter media of grading 06 mm to 03 mm size suitable for use in filteration plant complete all as specified & directed.

Supply and filling in layers mix of manganese dioxide (MnO2) and treated carbofil in lumps of size 20 mm to 15 mm containing 65% of manganese dioxide and 35% KG carbofil suitable for use in filltration plant complete all as specified & directed.

Chemical Analysis (Turbidity,PH Total Hardness, Iron, Chloride, Suplhates, Fluorides, Nitrates , Calcium, Arsenic) of Raw water( before filteration) and filtered water (after filteration) of 764 unit Pump Houses -01 No and Nepalipatti pump house-01 No at Mohanbari from government labortory or NABL accredited labortory as per IS 10500 on quarterly basis, including collection of water sample and arrangements for sending the water to labortory,for testing and submission of the test report complete all as specified and directed. (i) For set of one borewell( both after and before treating ) will be measured as one job and testing will be carried out on quarterly basis for each Pump House)

M/S RK Trading

M/S D G ENTERPRISE

M/S P.K.B.CONSTRUCTION

S K ENTERPRISE

RAJ BUILDER

R K CHAKRABORTY AND CO

HIND CONSTRUCTION