REPAIR/MAINT TO GI/PPR PIPE LINE, VALVES AND WATER STORAGE TANKS AND OTHER CONNECTED WORKS AT 40 MTN BDE AREA, 305 FD HOSP, 384 COY ASC (SUP), B DET, 106 FD WKSP, AT COY, TRANSIT COY, 27 PUNJAB AND NURANUNG AREA 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 hard/dense soil complete all as specified and directed.

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

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

(a) 20 mm dia

(b) 25mm dia 32 mm dia

(c) 40 mm dia to 50 mm dia

(d) 63 mm dia

(e) 80 mm dia

(f) 100 mm dia

S&F 3- layer PP-R Polypropylene random copolymer) pipes of following sizes ISI marked, IS-15801 SDR 7.4 (PN 10) & SDR 11 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 :-

(a) 20 mm dia

(b) 25 mm dia

(c) 32 mm dia

(d) 40 mm dia

(e) 50 mm dia

(f) 63 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 directed.

(a) 20 mm bore

(b) 25 mm bore

(c) 40 mm bore

(d) 50 mm bore

(e) 80 mm bore

(f) 100 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) complete all as specified and directed.

(a) 20 mm bore

(b) 25 mm bore

(c) 40 mm bore

(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 specified and directed.

(a) 20 mm dia

(b) 25 mm dia

(c) 32 mm dia

(d) 40 mm dia

(e) 50 mm dia

(f) 63 mm dia

Material and labour for fixing including jointing and testing of cast iron sluice valves of size as following class PN 1.0, conforming to IS : 14846 flanged ends drilled having brass spindle with cast iron whell at top complete with nuts, bolts, washer complete all as specified and directed.

(a) 80 mm dia

(b) 100 mm dia

(c) 150 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 complete all as specified and directed.

(a) 600 x 600 x 600 MM

(b) 900 x 900 x 900 MM

(c) 1200 x 1200 x 1200 MM

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

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 all as specified and directed.

S&F 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 :-

(a) 20 mm dia

(b) 25 mm dia

(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 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 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

M & L for rendering / sceed bed 15mm thick cement Plaster in cement mortor 1:4 with using water proofing compound for 80000 liter under ground water sump including demolition of old existing complete all as specified directed.

M&L cutting the existing CI/DI pipe line up to 150 mm dia and inserting new tees, and 150mm sluice valve CI/DI specials for connect Existing pipe lines for stand by connection complete all as per existing / site requirement and directed by Engr in charge

Supply and fix mechanical Joint , bend suitable for MS / CI / DI pipe of following Size

(a) 80mm dia

(b) 100 mm dia

(b) 150mm dia

Suppply and fix STEQUA Purity Verifier 41021. Containing 1 Comparator with Lid , 30 tablets X pH RAPID (Item code : PVPH 3041021) 30 tablets X Chlorine Rapid (Item code: PVFC 3041021), 1 Instruction sheet, 1 plastic box, pH Range 6.8-7.0-7.2-7.4-7.8-8.0-8.2, Chlorine Range :- 0.1-0.3-0.4-0.5-0.6-0.8-0.9-1.0-1.5-2.0-3.0-4.0-5.0-6.0 all as specified and directed by Engr-in-charge

Supply only pockets of 100 Tablets pH RAPID for STEQUA Purity verrifier 41021 all as directed by Engr-in-charge.

Supply only pockets of 100 Tablets Chlorine RAPID for STEQUA Purity verrifier 41021 all as directed by Engr-in-charge.

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.

Laying only 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

(a) 20 mm bore

(b) 25 mm bore

(c) 40 mm bore

(d) 50 mm bore

(e) 80 mm bore

(f) 100 mm bore

M/S TSERING DHONDUP

M/S K D CONSTRUCTION

M/S KESANG CONSTRUCTION

M/ S N T ENTERPRISES

M/S RHEGON CONSTRUCTION

SHELLUNG CONSTRUCTION