REPAIR/ MAINTENANCE TO GI/PPR PIPE LINE, VALVES AND WATER STORAGE TANKS, CLEANING OF TANKS AND OTHER CONNECTED WORK AT 72 MVFH, 384 SUPPLY, 106 FD WKSP, 852 AT COY, 305 FD HOSP, LHOU GOMPA, APNNB AND 40 BDE UNDER GE TAWANG

Amount

Excavation in trenches not exceeding 1.5m in width and 1.5m depth for taking out and laying PPR pipes and getting out in soft/loose oil all as specified and directed.

Returning filling including spreading , leveling ,watering and well ramming in layers not exceeding 25 cm all as specified and directed.

Removing excavated surplus soil not exceeding 50m and depositing where directed at a level not exc 1.5m above the starting points in soil all as specified and directed.

Taking up GI/ PP-R pipe of undermentioned sizes tubing with all accessoreis complete all as specified and directed :-

4(a) 25mm dia 32 mm dia

4(b) 40 mm dia to 50 mm dia

4(c) 63 mm to 75mm dia

4(d) 80 mm dia

3- layer PP-R Polypropylene random copolymer) pipes of following sizes ISI marked, IS-15801 SDR 7.4 (PN 16) UV stablised and inner antimicrobial and outer UV stabilized fusion welded having thermal stability for hot & cold water supply all PP-R plain brass threaded polypropylene random fitting laid in trenches /walls/cellings or laying in floors incl fitting and fixture complete all as specified and directed :-

9(a) 25 mm dia

9(b) 32 mm dia

9(c) 40 mm dia

9(d) 50 mm dia

9(e) 63 mm dia

9(f) 75 mm dia

Supply, laying and testing of steel water tubes medium grade galvanized ,with all fitting and laid in trenches and floor etc for following sizes complete all as specified and as directed

16(a) 50 mm bore

16(b) 80 mm bore

Material and Labour for gun metal globe or gate valves of approved make with iron wheel, complying to relevant IS with latest amendments. All complete as per Specifications (According to Total Number of Building Taping point)

19(a) 20 mm bore

19(b) 25 mm bore

19(c) 40 mm bore

19(d) 50 mm bore

S&F in replacement of PPR gate Valves (brass insert) of under mentioned sizes including cutting and inserting in existing pipe or fixing in new laid pipe with required fittings and fixtures complete all as directed

24(a) 25 mm dia

24(b) 32 mm dia

24(c) 40 mm dia

24(d) 50 mm dia

24(e) 63 mm dia

24(f) 75 mm dia

Material and labour for fixing including jointing and testing of cast iron sluice valves of size as following class PN 1.6 conforming to IS : 14846 flanged ends drilled having brass spindle with cast iron whell at top complete with nuts, bolts, washer complete all as per specified and as directed.

31(a) 80 mm dia

31(b) 100 mm dia

Material and labour for brick masonary valve chamber of the following sizes including necessary excavation, PCC foundation, brick work, plastering and MS sheet cover of 6 mm thick including locking arrangement with two coats of red oxide primer and one coat of synthetic enamel paint of approved colour all as directed of the folloiwng sizes: -

34(a) 600 x 600 x 600 MM

34(b) 900 x 900 x 900 MM

M&L for PCC 1:4:8 type D2 (using 40mm graded aggregate) as in foundation filling and mass concrete etc.

M&L for PCC 1:3:6 type C1 (20mm graded aggregate) precast cement concrete block masonary with solid blocks exc. 10cm in width and setting in CM 1:4 etc complete

Ball valves high pressure of PTMT with epoxy coated Aluminium rod & highdensity plastic ball screwed for iron pipeand fixed. (Minimum weight 20 mm - 210 gms . / 25mm-455gms/ 40mm- 690 gms) of undermentioned sizes :-

39(a) 20 mm dia

39(b) 25 mm dia

39(c) 32 mm dia

S&F in replacement of 2000 ltr capacity rotational moulded polethelene water storage tank (cylindrical vertical with closed up) of hoisted & fioxed in position.

S&F in replacement of 1000 ltr capacity rotational moulded polethelene water storage tank (cylindrical vertical with closed up) of hoisted & fioxed in position.

S&F in replacement of 750 ltr capacity rotational moulded polethelene water storage tank (cylindrical vertical with closed up) of hoisted & fioxed in position.

S&F in replacement of 500 ltr capacity rotational moulded polethelene water storage tank (cylindrical vertical with closed up) of hoisted & fioxed in position.

Disconnecting existing over head PVC water tanks , setting aside (or lowering if required) for repairs ,including cleaning and removing all scale and dirt etc from tank and from mouth of circulating pipe etc and hoisting and refixing in position including reconnection of water tanks complete of capacity exc. 250 Litres but n.exc. 500 Litres all as directed.

Disconnecting existing over head PVC water tanks , setting aside (or lowering if required) for repairs ,including cleaning and removing all scale and dirt etc from tank and from mouth of circulating pipe etc and hoisting and refixing in position including reconnection of water tanks complete of capacity exc. 500Litres but n.exc. 1000 litres all as directed.

Disconnecting existing over head PVC water tanks , setting aside (or lowering if required) for repairs ,including cleaning and removing all scale and dirt etc from tank and from mouth of circulating pipe etc and hoisting and refixing in position including reconnection of water tanks complete of capacity exc. 1000 Litres but n.exc. 2000 Litres all as directed.

M&L for cutting existing pipe making connection of PPR distribution branch with PPR main of size 16 to 40 mm bore and inserting Tee conncetion and making fusion joint etc. complete all as directed.

M&L for cutting existing pipe making connection of PPR distribution branch with PPR main of size 50 to 75 mm bore and inserting Tee conncetion and making fusion joint etc. complete all as directed.

M & L for cleaning of under ground / above ground water sump, Sedimantation tank , Raw water tanks by scraping the internal surface with steel wire brushes, pumping out water up to bottom level complete drain out removing silt / debris descaling with solution and applying two coats of lime white wash internally as directed by the Engr - in- charge, cleaning the internal surface of the tanks to the complete satisfaction and as directed by the Engr-in -charge for the following capacity 20000 Ltr to 40000 Ltr

M & L for cleaning of under ground / above ground water sump, Sedimantation tank , Raw water tanks by scraping the internal surface with steel wire brushes, pumping out water up to bottom level complete drain out removing silt / debris descaling with solution and applying two coats of lime white wash internally as directed by the Engr - in- charge, cleaning the internal surface of the tanks to the complete satisfaction and as directed by the Engr-in -charge for the following capacity 50000 Ltr to 80000 Ltr

Supply and fix Mechanical Joint, suitable for DI / CI pipe of following Size

54(a) 80 mm dia

54(b) 100mm dia

Supply and fix 'C' Clamp including nut, bolt and gasket suitable for GI, DI and CI pipe of size 150mm dia all as per direction and sample given by Engr-in-charge.

Supply and fix 'C' Clamp including nut, bolt and gasket suitable for GI, DI and CI pipe of size 100mm dia all as per direction and sample given by Engr-in-charge.

Supply and fix 'C' Clamp including nut, bolt and gasket suitable for GI, DI and CI pipe of size 80mm dia all as per direction and sample given by Engr-in-charge.

Material and labour for cutting, welding and jointing of existing GI pipe of size 50mm, 80mm, 100mm and 150mm complete all as specified and as directed.Note:-the rate of inclusive required necessary excavation.

S&F in replacement of PPR Unions (brass insert) of under mentioned sizes including cutting and inserting in existing pipe complete all as directed

61(a) 25 mm dia

61(b) 32 mm dia

61(c) 40 mm dia

61(d) 50 mm dia

61(e) 63 mm dia

61(f) 75mm dia

Laying only and testing of old serviceable and testing of steel water tubes medium grade galvanized ,with all fitting and laid in trenches and floor etc for following sizes complete all as specified and as directed

68(a) 25 mm bore

68(b) 40 mm bore

68(c) 50 mm bore

68(d) 80 mm bore

68(e) 100 mm bore

Supply and fix PPR Sockets of under mentioned sizes including cutting and inserting in existing pipe complete all as directed

74(a) 25 mm dia

74(b) 32 mm dia

74(c) 40 mm dia

74(d) 50 mm dia

74(e) 63 mm dia

74(f) 75mm dia

Supply and fix PPR elbow of under mentioned sizes including cutting and inserting in existing pipe complete all as directed

81(a) 25 mm dia

81(b) 32 mm dia

81(c) 40 mm dia

81(d) 50 mm dia

81(e) 63 mm dia

81(f) 75mm dia

Supply and fix PPR TEE of under mentioned sizes including cutting and inserting in existing pipe complete all as directed

88(a) 25 mm dia

88(b) 32 mm dia

88(c) 40 mm dia

88(d) 50 mm dia

88(e) 63 mm dia

88(f) 75mm dia

M/S KESANG CONSTRUCTION

M/S N T BROTHERS

M/ S N T ENTERPRISES

M/S RINCHIN DORJEE CONSTRUCTION

M/S TARAYANA BUILDERS

TENZIN CONSTRUCTION

T T ENTERPRISES