REPAIRS AND MAINTENANCE OF EXTERNAL WATER SUPPLY PIPE LINE NETWORK WITH CONNECTED ACCESSORIES AND MISCELLANEOUS WORKS AT MASIMPUR AND KUMBHIGRAM UNDER GE SILCHAR

Amount

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth for foundations, manholes, etc. or for laying cables/pipes, erecting poles, etc. not exceeding 10sqm on plan and getting out in soft / loose soil complete all as specified and as directed

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

Removing excavated materials to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point in any type of soil including spreading in low lying area and leveling complete all as specified and as directed

Dismantling of existing unserviceable and rusted MS clamps, angle, MS flat iron, nuts, bolts and washers, etc. from any location / position, etc. and disposing off complete all as specified and as directed

M&L for dismantling old MS plates,joist channel,angles,girder and staging for over head reservoir,Floculator base and floating barge etc by cutting as necessary,complete all as specified and as directed.

S&F joist, channel, angle, or tee sections, fixed independently, without connecting plates, etc. (cut to ordinary lengths i.e. within 20mm of the length indicated) as in compound girders, stanchions, lattice girders, aerial masts, staging for water tanks, etc. complete all as specified and as directed

S&F plates (plain or chequered) channels, square cut or notched (ordinay and counter sunk) forming holes, without any attachment of Fe 410W grade-E -250, quality 'B' complete all as specified and as directed

Taking up or down steel water tubing and connections from any location / position, sorting, stacking serviceable tubings for reuse, and disposing off unserviceable tubing, etc. complete all as specified and as directed for the following bores of pipes:

Relaying and refixing only steel water tubing, medium grade, galvanised with screwed and socketed joints, including supply and fixing all fittings, ISI marked conforming to IS-1239 and fixed to walls or laid in trenches required for water connections complete all as specified and as directed for the following bores: Notes: (a) Serviceable tubings obtained from dismantling herein before will be reused under this item (b) Tubings shall be thoroughly cleaned off from dirt, mud, silt, rust, etc., duly de-scaled and threaded before reuse

Supplying, fixing / laying steel water tubing, medium grade, galvanised with screwed and socketed joints, in any length, including supply and fixing all fittings viz. bends, elbows, tees, short pieces, connectors, backnuts, diminishing pieces, caps, plugs, unions, flange, etc. ISI marked conforming to IS -1239 and fixed to walls or laid in floors / trenches for water connections including all necessary welding, etc. as required at site complete all as specified and as directed for the following bores:

S&F gun metal globe or gate valve with iron wheel head, screwed both ends for iron pipe and fixed, heavy duty, including necessary cutting into existing pipe, threading, inserting new piece of GI pipe of existing size, and earthwork in any type of soil or breaking/cutting into road/interlocking tiles/cement concrete, etc. and making good the disturbed surfaces including taking out and disposing off old unserviceable valves complete all as specified and as directed of the following sizes:

20mm dia

25mm dia

40mm dia

50mm dia

Supplying, fixing and testing on installation sluice valve, cast iron body class PN 1.6, conforming to IS-14846, ISI marked, both ends flanged with brass spindle and brass check nuts with cast iron hand wheel including jointing material like rubber insulation sheet 3mm thick, bolts, nuts and fixed to pipe line including taking out and disposing off old unserviceable valves complete all as specified and as directed of the following sizes:

80mm dia

100mm dia

150mm dia

300mm dia

M&L for cutting wild grass bushes, creeper,unwanted vegetation from inside/surrounding of installation/reservoir as an when directed and removing of debris from installation/reservoir compound , complete all as specified and as directed.

M&L for dismantling ductile iron 100mm joint PN1.6,K-9 , complete all as specified and as directed.

M&L for dismantling ductile iron 150mm joint PN1.6,K-9 , complete all as specified and as directed.

M&L for dismantling ductile iron 200mm joint PN1.6,K-9 , complete all as specified and as directed.

M&L for dismantling ductile iron 250mm joint PN1.6,K-9 , complete all as specified and as directed.

S&F in replacement CI air release valve of 150mm dia, double orifice flanges PN1.0 with tamper proof arrangement including taking down of old one, complete all as specified and as directed.

S&F mild steel bands, straps, hold fasts, clamps, angles, flat iron, wall ties, nuts, bolts, washers and similar articles conforming to Fe-290 grade E-165 including all necessary welding as required complete all as specified and as directed

M&L for taking down 250mm dia DI pipe including all fittings with spigot and socket ends and centrifugally cast(spun), rubber gasket tyton joint, K-9 for fixing of necessary DI pipe and DI fitting i.e bend,tees,socket,mechanical joint etc and refixing all, complete all as sepcified and as directed.

M&L for taking down 200mm dia DI pipe including all fittings with spigot and socket ends and centrifugally cast(spun), rubber gasket tyton joint, K-9 for fixing of necessary DI pipe and DI fitting i.e bend,tees,socket,mechanical joint etc and refixing all, complete all as sepcified and as directed.

M&L for DI pipes with socketed and spigot ends suitable for tyton joints centrifugally cast (spun) class K-9 conforming to IS:8329 cut to any length laid in trenches including rubber gaskets joints complete all as specified and as directed for the following sizes: Note: Fittings shall be measured and paid separately under respective item

300mm bore

250mm bore

200mm bore

150mm bore

100mm bore

M&L for size upto 200mm ductile iron specials / fittings like bends (any type, radius and angle) tapers any type (straight, bend, increasing, decreasing or double socket etc.), tee pieces single branch 'Y' junction, double branch, cross (all sockets or socket and spigot), collars, caps, plug, etc. complete all as specified and as as directed. Note: Lead joint, excavation and earthwork shall be measured and paid separately under respective items

M&L for size upto 200 to 300mm ductile iron specials / fittings like bends (any type, radius and angle) tapers any type (straight, bend, increasing, decreasing or double socket etc.), tee pieces single branch 'Y' junction, double branch, cross (all sockets or socket and spigot), collars, caps, plug, etc. complete all as specified and as as directed. Note: Lead joint, excavation and earthwork shall be measured and paid separately under respective items

M&L for cutting out exisitng CI/DI pipe pine of size 250mm dia, complete all as speified and as directed.

M&L for cutting out exisitng CI/DI pipe pine of size 200mm dia, complete all as speified and as directed.

M&L for drilling and tapping cast iron water mains (in position) for branch connections of the internal dia 20/25mm complete all as specified and as directed

M&L for preparing of old steel / metal surfaces of any description over 10cm in width or girth and applying two coats of synthetic enamel paint (tint as approved) over a coat of red oxide zinc chrome primer complete all as specified and as directed

S&F in repairs 15mm dia bib taps, fancy type, PTMT any colour, high pressure (minimum weight 90gms) screwed down, screwed for iron pipe or for brass ferrule complete all as specified and as directed

S&F in repairs 20mm dia ball valves, brass, high pressure, with high density plastic / polythene float / ball, epoxy coated aluminium rod and flynut, screwed for iron pipe or brass ferrule and fixed complete all as specified and as directed

S&F in repairs 25mm dia ball valves, brass, high pressure, with high pressure, with high density plastic / polythene float / ball, epoxy coated aluminium rod and flynut, screwed for iron pipe or brass ferrule and fixed complete all as specified and as directed

M&L for rubber gasket (tyton joint) suitable for 100-150mm bore DI/CI pipes complete all as specified and as directed Note: Excavation and earthwork will be measured and paid separately under respective items

M&L for rubber gasket (tyton joint) suitable for 100-150mm bore DI/CI pipes complete all as specified and as directed

M&L for rubber gasket (tyton joint) suitable for 200-250mm bore DI/CI pipes complete all as specified and as directed

M&L for run lead joint for 150mm bore including cauling with spun yarn with run lead joint, complete all as specified and as directed.

M&L for construction of brick masonry valve pit chamber of size 1050x1050x1050mm with 100mm thick foundation using PCC 1:3:6 (type C-2) using 40mm graded stone aggregates, 230mm thick brick masonry wall built in CM 1:6, 10mm thick internal and 15mm thick external plastering in CM 1:4, finished even and smooth without using extra cement and 6mm thick MS sheet cover including 50x50x6mm MS angle frame fixed in PCC 1:2:4 type B-1 coping with 25x6mm flat iron hinges, hold fasts, handles, locking arrangements, applying two coats of synthetic enamel paint over one coat of red oxide zinc chrome primer to all steel surfaces including excavation and earthwork in any type of soil and disposal of surplus soil to a distance of not exceeding 50m and demolition of old chamber, including foundation, etc. and disposing off complete all as specified and as directed of the following internal sizes: Note: The cost shall be inclusive of all items of work required for the execution and entire completion of this item and nothing extra shall be paid separately in any other items of BOQ

M&L for mild steel TMT bars grade Fe-500D, 10mm dia and over, cut to length, bent to shape required including cranking, bending spirally or hooping for columns, hooking ends and binding with and including MS wire (annealed) not less than 0.9mm dia or securing with clips complete all as specified and as directed

M&L for PCC 1:3:6 type C2 (using 40mm stone aggregate) as in foundation, filling and mass concrete complete all as specified and directed

M&L for PCC 1:3:6 type C2 (using 40mm stone aggregate) as in coping, concrete complete all as specified and directed

M&L for Precast plain cement concrete 1:2:4 (type B-0) using 12.5mm graded stone aggregate as for valve chamber including necessary formwork, fixing arrangment with steel bar 10mm , complete all as specified and as directed

M&L for brickwork with sub-class 'B' bricks , straight or curved on plan exceeding 6m mean radius built in CM (1:6) complete all as specified and as directed

M&L rendering 15mm thick, in cement mortar (1:4) on walls / concrete surfaces, etc. finished even and smooth without using extra cement complete all as specified and as directed

M&L for fabrication, supply, erection and testing of Glow Sign Board with star backlite flex,LED lightening duly written Alphabets alongwith necessary mounting arrangement on the GI pipe/column,MS work,earthwork & cement concrete 1:3:6 type C1 using 20mm graded stone aggregate , complet all as specified and as directed.

MS AFTAB LASKAR (BID ID -3443647)

M/S TAPAN KUMAR RAY (BID ID -3442026)

m/s builders and suppliers (BID ID -3442257)

M/S SANJIB DEB (BID ID -3443460)