SPECIAL REPAIR/REPLACEMENT OF PSS TANK 10000 GLNS ALONGWITH CONNECTED ITEMS AT MONGPONG AND SHAGAON AREA OF BAGRAKOTE MIL STN UNDER GE SEVOKE ROAD

Amount

Excavation in trenches not exceeding 1.5 mtr wide and not exceeding 1.5 mtr deep for foundation, laying GI pipes and UG cables etc not exc 10 sqmtr on plan, in soft/loose soil and getting out complete all as specified and directed.

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

Removing excavated soils to a distance not exceeding 50 metres and depositing where directed at a level nexc. 1.5 metre above the starting point complete all as specified and directed.

Materials and labour for Dismantaling of existing plate from Overhead pressed steel tank of capacity upto 10000 gallons consisting with 52 plates each of size 1.22m x 1.22m x 6mm thick including taking out jointing bolts, nuts, washers, etc from over head pressed steel water tank installed at 12 to 15 m high staging and removing unserviceable plates, bolts & nuts as per schedule of credit in the work complete all as specified and as directed. (Note : Cost of temporary staging/working platfrom as required for the above operation is deemed to be included in the unit rate quoted by the bidder.)

Supply and fixing pressed steel plate of size 1.22m x 1.22m x 6mm thick factory made at 12 to 15 m high staging with jointing materials lead wool and black putty,etc as required to make the joints perfectly leak proof and testing for water tightness of the tank complete all as specified and as directed by the Engr-in-Charge. (Note: Quoted rate should include price with jointing materials etc as required)

Dismanting old unserviceable/wormout bracing, supports, cleats, clamp, bolts, nuts and washers etc as as required of pressed steel water tank at staging of 12 to 15 m hight including cutting, drilling holes, welding as necessary to suit the site requirement and setting aside serviceable portion for re-use with in 50 mtr and removing unserviceable potion as per schedule of credit complete all as specified and as directed.

Supply, Fabricated and fixing the stuructural steel Fe 410 grade such as Roof trusses (framed), trussed, purlins, crane gantries, rails and fastenings and heavy bracket framing (Beam, tee, angle, channel or flat sections) including distance pieces, cleats etc. as required of SMC water tank & staging at 12 to 15 m hight including cutting, drilling holes, welding as necessary to suit the site requirement complete as directed.

Materials and labour for painting external steel surface of angles,chennel or flat iron of staging SMC OH tank installed at height of 12 to 15 M height by complete two coats of sythetic enamel paint over one coat of red oxide primer including painting of structure, sluice valve and connected all pipe lines from tank to borewell as per colour coding as specified and directed by Engr-in-charge. (Note : Cost of Temporary structure/truss for painting is included in the unit rate quoted).

Supply and fixing machine made bolts, nuts and washers made with hexagonal or square head at one end screwed the other end or both ends to be fitted with waswhers and hexagonal or square nut, (dia of bolt 5 to 24 mm and length n.exc 5cm) as directed.

Supply and fixing Digital type water level indicator 150mm size digital display cable system including stem insertion for sensing the water level suitable for overhead water reservoir complete etc with suitable fixing arrangement and other accessories as per OEMs manual for and incl necessary PVC Sheathed / PVC Insulated copper cable 0.5 Sqmm 03 Core from sensor to display unit (incl PVC Conduit, flexible conduit, bends etc) with following specfiications etc to be operated with 230Volts single phase AC supply including fixing arrangement in a weather proof enclosure with front view glasses etc model DDS-6 of SECO make or equivalent alongwith a hooter for alert of overflow and drain out mode etc including taking down old unserviceable water level indicator complete all as specified and directed. Size of Upper Unit : Lenght 22" , Width- 8" and Height - 8" , Display Unit - 8 display in one panel , Panel Size - Length 40", Width-44" and Height-6".

Supply, laying and testing ductile iron (DI) pressure pipe with spigot and socket end, class K-7, confirming to IS-8329/2000, suitable for push - on rubber gasket jointing with centrifugally applied inside cement mortar lining with portland cement and metallic zinc coationg and finishing layer of black bitumen coating on external surface of size 150 mm dia duly ISI marked including gaskets for fixing socket joint and other conneting acessories to laid in trenches etc complete all as specified and directed.

Supply, laying and testing ductile iron (DI) pressure pipe with spigot and socket end, class K-7, confirming to IS-8329/2000, suitable for push - on rubber gasket jointing with centrifugally applied inside cement mortar lining with portland cement and metallic zinc coationg and finishing layer of black bitumen coating on external surface of size 100 mm dia duly ISI marked including gaskets for fixing socket joint and other conneting acessories to laid in trenches etc complete including taking down old unserviceable DI/GI pipe all as specified and directed.

Supply, laying, connecting and testing PP-R (Polypropylene random co-polymer) 110mm outer dia pipe, 3-layer (outer green coloured UV stablilized, middle black coloured UV stabilized and innermost layer white coloured with anti-microbial property), as per IS-15801, fusion welded, grade PN-16 SDR-7.4 having thermal stability for hot & cold water supply with and including socket fittings, laid in trenches/walls complete including taking down old unserviceable DI/GI pipe all as specified and as directed.

Supply, laying, connecting and testing PP-R (Polypropylene random co-polymer) 90mm outer dia pipe, 3-layer (outer green coloured UV stablilized, middle black coloured UV stabilized and innermost layer white coloured with anti-microbial property), as per IS-15801, fusion welded, grade PN-16 SDR-7.4 having thermal stability for hot & cold water supply with and including socket fittings, laid in trenches/walls complete all as specified and as directed.

Supply, laying, connecting and testing PP-R (Polypropylene random co-polymer) 63mm outer dia pipe, 3-layer (outer green coloured UV stablilized, middle black coloured UV stabilized and innermost layer white coloured with anti-microbial property), as per IS-15801, fusion welded, grade PN-16 SDR-7.4 having thermal stability for hot & cold water supply with and including socket fittings, laid in trenches/walls complete including taking down old unserviceable DI/GI pipe all as specified and as directed. (Note for item No. 13,14 & 15 above: (i) Contractor shall submit 7 Years warranty certificate from the manufacturer of any manufacturing defect and leakage through the pipeline. (ii) If there is any technical problem regarding PP-R product,contractor shall provide support within 2 Days.

Supply and fixing 150mm bore, cast iron sluice valve both end flanged, class PN 1.6 conforming to IS -14846 (raising stem type) with iron wheel head and stainless steel spindle including necessary jointing materials like nuts, bolt, washer & rubber/fiber board gasket including taking up/down old sluice valve complete all as specified and as directed.

Supply and fixing 100mm bore, cast iron sluice valve both end flanged, class PN 1.6 conforming to IS -14846 (raising stem type) with iron wheel head and stainless steel spindle including necessary jointing materials like nuts, bolt, washer & rubber/fiber board gasket including taking up/down old sluice valve complete all as specified and as directed.

Supply and fixing 80mm bore, cast iron sluice valve both end flanged, class PN 1.6 conforming to IS -14846 (raising stem type) with iron wheel head and stainless steel spindle including necessary jointing materials like nuts, bolt, washer & rubber/fiber board gasket including taking up/down old sluice valve complete all as specified and as directed.

Supply and fixing PP-R gate valves (brass insert ) complete all as specified of 63 mm bore outer dia including taking down of existing unserviceable one complete all specified .

Materials and labour for construction of valve chamber with MS sheet cover 3mm thick with angle iron) frame of size 50 x 50 x 6mm and locking arrangements including painting one coat of primer followed by two coats of black sysnthetic paint including excvation and earth work in any type of soil,PCC (1:4:8) type D2 in foundation ,PCC benching 1:2;4 type B-1 ,PCC (1:5:8) block masonry 20 cm thick in cement mortor (1:6),10 mm thick plastering in CM 1:4 ,PCC bed in (1:3:6) and coping 50mm hick in cement concrete 1:2:4 type B1 using 20mm stone aggregate including necessary formwork,paintin one coat of red oxide and two coats of bituminious black paint on all steel surfaces as specified and as directed of sizes 1200mm x 1200mm x1200mm (internnal dimensions) including demolition of existing valve chamber,complete all as specified and as directed.

M/S JANARDAN SHARMA AND SONS (BID ID -3139685)

BIJOY DEY (BID ID -3139657)

M S BHARAT CONSTRUCTION CO. (BID ID -3138540)

SHRI JAYANTA GHOSH (BID ID -3139635)

The Associated Construction And Co (BID ID -3138658)

M/S ASOKE KUMAR MAJUMDER (BID ID -3139266)

M/S L N CHOWDHURY (BID ID -3139347)

M/S S.B. CONSTRUCTION (BID ID -3139658)

TAPASH SAHA (BID ID -3139386)

LIBERAL ENGINEER CONSTRUCTION (BID ID -3139312)

ASHOK MUKHERJEE (BID ID -3139909)