REPAIR TO LEAKAGE / SEEPAGE IN ROOF, CHAJJA, BALCONIES AND PLUMBING ETC AND MISC WORKS AT KATRE VIHAR AREA AND REPAIR / REPLACEMENT OF EARTHING PITS AT AF STN HASIMARA UNDER GE (AF) HASIMARA

Amount

SCHEDULE 'A' PART-I M & L Water proofing treatment on RCC roof etc. comprising with the following operation and as specified herein below and as directed:- (a) Taking down existing old tarfelt, bituminous compound including cleaning, picking, sweeping and washing down with water and brushing with neat cement slurry & 3 Kg per Sqm & removing debris to a distance exc 100m & n.exc.250m. (b) 15 mm thick plastering in cement mortar 1:3 mixed with water proofing compound (to be measured seperately) as per manufacturer instructions finished even & smooth. (c) Preparing & cleaning of fully dried cement plastered surface. (d) Applying one coat of cold bituminous primer to the plastered surface @ 300 ml per sqm conforming IS-3384 (e) A layer of APP based polymeric membrane membrane 3mm thick (minimum) weighing 3.5 kg per sqm reinforced with polyster non woven fabric (weighing not less than 160 gms/sqm) shall be applied over bituminous primer as specified above. Application of polymeric membrane shall be by torch application. The over lap shall be minimum 100 mm on transverse direction and 75 mm in longitudinal direction. (f) One coat of aluminium paint over the APP based membrane @ 0.11 Kg/Sqm

Demolition of cement concrete (unreinforced) in any position exceeding 15 cm thickness above ground floor, etc complete all as specified and directed.

M & L for Plain cement concrete 1:2:4, type B-1, (using 20 mm graded stone aggregate) as in roof kerb or mud stop, rounded or chamfered on edges incuding necessary form works etc complete all as specified and directed.

Dismantling of plain or corrugated steel sheeting, any gauge, thickness, in roof covering including ridges and keeping serviceable sheets in safe custody for reuse in the work complete as directed.

S & F Pre-Painted galvalume aluminum zinc coating GI based Plain steel sheet 0.50mm thick of any colour having tensile strength of 550 Mpa as in ridges/vally gutter, fixed with self tapping screws as per manufacturer's instruction complete all as specified and directed.

S & F Pre-Painted galvalume aluminum zinc coating GI based Plain steel sheet 0.50mm thick of any colour having tensile strength of 550 Mpa as in ridges/vally gutter, fixed with self tapping screws as per manufacturer's instruction complete all as specified and directed.

Fixing only 0.63mm thick galvanised, corrugated mild steel sheeting in roof covering with two corrugation side lap, fixed with L type or J type or cranked hook bolts complete all as specified and directed. (Note : Serviceable CGI sheets shall be obtained from Item No. 04 above for re-use)

Dismantling wall and ceiling boards (fibre, pulp, insulation etc.) any thickness including cover fillets complete all as specified and directed.

S & F 4mm thick non asbestos fibre reinforced designer ceiling board (610mmx610mm) with hot drip heavy duty suspended ceiling grid system T-2430 with GI frame work for seamless ceiling comprising of GI perimeter channel, unequal flanges and web etc of suitable size suspended from soffit at approx 900 mm centre to centre with GI cleat and steel expansion fasteners with and including ceiling section including Hangers 6 mm dia GI fixed to roof by means of ceilling cleats made out of GI flat per manufacturers instructions complete all as specified and directed by the Engr-in-Charge.

Dismantling of wrought iron or mild steel work of any description not otherwise provided for complete all as specified and directed.

S & F MS steel work in tubular trusses including special shaped washer etc. complete using ERW or induction butt welded tubes conforming to I.S. 1161-1979 grade St-240 complete all as speicfied and directed.

M & L for Preparation of new steel surfaces of any description, over 10 cm in width or girth, not otherwise described and applying two coats of synthetic enamel paint over a coat of red oxide, zine chrome primer complete all as specified and directed.

Taking down cement plaster on brick or stone walls etc including racking out joints, hacking for key, scrubbing down with water complete all as specified and directed

M & L for rendering 15 mm thick in two coats (10mm+5mm each) on fair faces of brick work or concrete surfaces in cement mortar 1:4, mixed with integral water proofing compound with weight of cement in top layer as per manufacturer's instructions and finished the surface even and fair without using extra cement complete all as specified and directed. (Note : WPC shall be measured and paid separately against respective item).

Supply only integral water proofing compound (ISI marked) complete all as specified and directed.

M & L for Preparation of newly plastered surfaces of walls and applying two coats of cement base paint over a coat of alkali resistant primer complete all as specified and directed.

M & L for preparation of old decorated surfaces of walls by complete removal of existing treatment and applying two coats of cement base paint over a coats of alkali resistant primer complete all as specified and directed.

Dismantling cast iron, PVC or reinforced concrete drain pipes, etc upto 110mm bore, with fittings jointed in cement mortar and taking out of trenches, floor or walls if required complete all as specified and directed.

S & F 110 mm bore, PVC (SWR), Soil waste and vent pipes in any length with or without ears, with cement joints fixed to wall, etc with all necessary fixing arrangement complete all as specified and directed.

S & F 75 mm bore, PVC (SWR), Soil waste and vent pipes in any length with or without ears, with cement joints fixed to wall, etc with all necessary fixing arrangement complete all as specified and directed.

S & F 110 mm bore, PVC (SWR) bends of any radius complete all as specified and directed.

S & F 110mm bore, PVC (SWR) junction single, (Single T) equal or unequal complete all as specified and directed.

S & F 75 mm bore, PVC (SWR) bends of any radius with oval access door complete all as specified and directed.

S & F 75mm bore, PVC (SWR) junction single, (Single T) equal or unequal complete all as specified and directed.

S & F 75mm bore, PVC (SWR) junction double, (Double T) equal or unequal complete all as specified and directed.

Removal of vegetation/grass etc including Cutting holes into or through brick walls/concrete and removal of small trees/woods etc and making good disturbed surfaces with cement concrete 1:2:4, type B-0 (Using 12.5mm graded aggregate) complete all as specified and directed.

Cleaning/Uprooting of vegetation/small trees, muds, garbages, waste etc growth on inaccessible RCC roof, AC sheet roof, below wind tie, cleaning of AC sheet/CGI sheet, valley gutter and shaft portion of wall surfaces, back side of toilet portion and above chajja portion etc complete all as specified and directed.

Cleaning and removing all scale and dirt, etc, from tanks of capapcity exc 250 & n.exc 500 Ltrs and from mouths of circulating pipes, etc. using bleaching powder and washed with water including dismantling and reconnecting and refixing in psoition including writing date of cleaning with white synthetic enamel paint as "CLEANDED ON" complete all as specified and directed.

S & F 500 litres capacity rotational moulded polyethylene water storage tanks (Cylindrical vertical with closed top), hoisted and fixed in position including taking down old unserviceable one as specified in SSR Part I and directed.

S & F 20 mm bore, Ball valves high pressure of PTMT with epoxy coated Aluminium rod & high density plastic ball screwed for iron pipe and fixed. (Minimum weight - 210 gms) complete all as specified and directed.

S & F in repairs, 20 mm bore, Ball valves high pressure of PTMT with epoxy coated Aluminium rod & high density plastic ball screwed for iron pipe and fixed. (Minimum weight - 210 gms) complete all as specified and directed.

Taking up or down 15mm bore, Steel tubing and connections and keeping serviceable pipes in safe custody for reuse in the work after and including cleaning as directed.

Taking up or down 20mm bore, Steel tubing and connections and keeping serviceable pipes in safe custody for reuse in the work after and including cleaning as directed.

Supply, laying, connection and testing, 15mm bore, Steel water tubing, galvanised, medium grade with all fittings and fixed complete to walls and ceilings or laid in floors, etc complete all as specified and directed.

Supply, laying, connection and testing, 20mm bore, Steel water tubing, galvanised, medium grade with all fittings and fixed complete to walls and ceilings or laid in floors, etc complete all as specified and directed.

Refixing of 15mm bore old serviceable steel tubing and connections in new or old position with new fittings complete to walls and ceilings or laid in floors, etc complete as directed. (Note: Serviceable pipe shall be reused as obtained from serial item No. 32 above)

Refixing of 20mm bore old serviceable steel tubing and connections in new or old position with new fittings complete to walls and ceilings or laid in floors, etc complete as directed. (Note: Serviceable pipe shall be reused as obtained from serial item No. 33 above)

S & F in repairs, 15 mm bore, Stop valves, cast copper alloy, screwed down, high pressure, with crutch or butterfly handle, screwed both ends for iron pipe or for unions complete all as specified and directed.

S & F in repair 20 mm bore, Stop valves, cast copper alloy, screwed down, high pressure, with crutch or butterfly handle, screwed both ends for iron pipe or for unions complete all as specified and directed.

S & F in repairs, 15 mm bore, Stop valves, cast copper alloy, chromium plated with long shank and cup, concealed type, screwed down high pressure, with crutch or butterfly handle, screwed both ends for iron pipe or for unions complete all as specified and directed.

S & F in repair PVC over head tank cover suitable for 500 Litres capacity tank complete all as specified and directed.

Dismantling floor, hearth or wall tiling including cement mortar bedding (but not backing) and rubbish off the premises complete all as specified and directed.

M & L for non-skid, ceramic, coloured tiles 7 to 8 mm thick (square/rectangular) area of each tile exc 0.11 sqm but n.exc 0.18 sqm, in floors etc, including 15 mm thick screed bed in cement mortor 1:4 and set & jointed in neat cement slurry and pointed in white or coloured cement to match with the shade of tiles complete all as specified and directed.

M & L for glazed, coloured, ceramic, tiles of size (350mm x 250 mm/450mm x 350mm/300mmx450mm) x 6 to 7 mm thick, on vertical surfaces such as skirting, dados etc, including 10 mm thick bedding in cement mortor 1:4 and set & jointed in neat cement slurry & pointed in white or coloured cement to match with the shade of tiles complete all as specified and directed.

Fixing only in repair aluminium strip of size 25x3.00mm with and including new shaddles and fixing accessories etc as in roof conductor and down conductors above ground complete all specification and directed.

Fixing only in repair copper strip of size 20x3.00mm burried in ground complete all specification and directed.

Fixing only in repair copper strip of size 32x6mm burried in ground complete all specification and directed.

Fixing only in repair galvanised iron strip of size 32x6mm burried in ground complete all specification and directed.

S & F aluminium strip 25 x 3.00mm with Saddles and fixing screws etc for roof conductors and down conductors above ground level including taking down the old one complete all as specified and directed.

S & F Copper strip 20 x 3.00mm burried in ground including taking down the old one complete all as specified and directed.

S & F Copper strip 32x6mm buried in ground including taking down the old one complete all as specified and directed.

S & F Galvanised iron strip 32x6mm buried in ground including taking down the old one complete all as specified and directed.

M & L for Earthing complete with galvanized steel earth plate electrode 600 mm x 600 mm x 6 mm thick buried directly in ground (earth pit not less than 2.25 meter deep below ground level) with top edge of plate not less than 1.5 meter below normal ground level, connected to galvanized steel earth lead wire 4 mm dia by means of bolts, nuts, check nuts and washers of galvanized iron or steel, all as shown in Electrical Plate No 3 of SSR Part - I, including necessary excavation and earth work, P.C.C (1:3:6) type C-I with 50 mm thick Pre-cast R.C.C. (1:2:4) type B-I cover slab (reinforced with 8 mm dia deformed bar @ 15 cm C/C both ways and suitable handle of 10 mm dia round bar), including providing charcoal or coke and common salt in alternate layers of 15 cm compacted thickness all around the earth electrode, with funnel and 20 mm bore galvanized iron watering pipe (medium grade), wire mesh, aluminium lugs, complete in all respect, GI earth wire protected by 15 mm bore (light grade) galvanized iron pipe and other end connected with main switch board or Earthing test point as directed, including necessary earth work and disposal of spoil to a distance not exceeding 50 metre and necessary testing on completion inclduing taking down old one complete all as specified and as directed by the Engineer-in-Charge.

M & L Earthing complete with GI earth plate electrode 600 mm x 600mm x 6 mm thick burried directly in ground vertically to a depth not less than 2.25 m below ground level with the top edge of earth plate at depth not less than 1.5 m below ground level connected with galvanised earth strip of size 32x6mm dia by means of bolts, nuts, check nuts and washers protected by 40mm bore light grade GI pipe, funnel with 20mm bore GI medium grade pipe for watering, wire mesh, including concrete pit in PCC (1:3:6) type C-1, with 50 mm thick Pre-cast R.C.C. (1:2:4) type B-I cover slab (reinforced with 8 mm dia deformed bar @ 15 cm C/C both ways and suitable handle of 10 mm dia round bar), including providing charcoal or coke and common salt in alternate layers of 15 cm compacted thickness all around the earth electrode, with funnel, wire mesh, aluminium lugs, complete in all respect and other end connected with main switch board or Earthing test point as directed, including necessary earth work and disposal of spoil to a distance not exceeding 50 metre and necessary testing on completion inclduing taking down old one complete all as specified and as directed by the Engineer-in-Charge.

M & L Earthing complete with copper earth plate electrode 600 mm x 600mm x 3.15 mm thick burried directly in ground vertically to a depth not less than 2.25 m below ground level with the top edge of earth plate at depth not less than 1.5 m below ground level connected with copper earth strip of size 20x3mm dia by means of bolts, nuts, check nuts and washers protected by 40mm bore light grade GI pipe, funnel with 20mm bore GI medium grade pipe for watering, wire mesh, including concrete pit in PCC (1:3:6) type C-1, pre-cast RCC 1:2:4 type B-1 cover slab of size 350x350x50mm reinforced with 8mm dia TMT steel bars @15cm centre to centre in both direction and 10mm dia MS handle of suitable size, charcoal or coke and salt in alternative layers,necessary earth work in soft/loose soil all as shown in Electrical Plate No 3 of MES Schedule Part I and testing complete inclduing taking down old one as specified and as directed.

All as per serial item No. 55 above but using magnesium sulphate in lieu of common salt complete ditto

All as per serial item No. 55 above but using copper sulphate in lieu of common salt complete ditto

M & L for 40 mm bore, steel tubes, galvanised, medium grade with all fittings, laid in floor/road crossing/drain etc as in cable protection complete to walls and ceilings or laid in floors including taking up or down existing pipe complete all as specified and directed.

S & F in repairs porcelain vitreous white/brown/green spacers insulator of size 75x35x40mm high complete with one number galvanised iron stud, bolts 6mm dia, 40mm long including nuts, bolts & washers and two numbers galvanised iron fixing bolts of size 6mm dia and 50mm long including washers and drilling holes for holding/fixing aluminium strip/roof conductor as required complete all as specified and directed.

S & F in repair earth continuity conductor or main earthing lead with galvanised iron wire 4mm dia, fixed to wall on batten or recesses or chases or burried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc, as required complete all specification and directed.

Fixng only in repair Test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 nos. 8mm dia 25mm long hex. head screw complete all as specified and directed.

M & L for Earthing pit with PCC (1:3:6) type C-1, pre-cast RCC 1:2:4 type B-1 cover slab of size 300x300x50mm reinforced with 8mm dia TMT steel bars @15cm centre to centre in both direction and 10mm dia MS handle of suitable size including 20mm bore GI light grade pipe for watering, funnel, wire mesh, necessary earth work in soft/loose soil all as shown in Electrical Plate No 4 of MES Schedule Part I and testing and applying three coats of white wash on exposed surfaces of concrete complete inclduing taking down old one as specified and as directed.

Supply & Installation of advance encapsulated compound based CPRI tested maintenance free, pipe-in-pipe technology upgraded (Zinc & Alloy Coated), ZINC COATED (80-100) microns with pure Zinc (99.9%) & ALLOY COATING (200-250) microns, Earthing System confirming IS 3034 .The outer and inner pipe should be 76.2mm & 41.9mm dia, 3mtrs Length, Zinc coated with additional special Alloy coating 300mm on the topside for additional protection of the Terminal and super quality copper strip in centre. The annular space between the pipes being filled up with COMPACT FILL(CF) (Crystalline Conductive Compound). The COMPACT FILL (CF) mixture which is machine pressed in the pipes should not disintegrate or collapse when outer pipe corrodes. The inner pipe should be extended with terminals for connectivity. The job includes digging the pits and refilling the same by Electrodite/Conductolite Back Fill compound (Ground Enhancer), the BFC should be eco friendly it should not contain environmentally hazardous material/metal having ROHS Certification from NABL accredited lab. The earth pit should be provided with a FRP earth pit cover for protection and safe guard of terminals. In areas where soil condition is bad, good earth is to be arranged to fill the excavated pits by mixing the same with BFC ( 3 Bag per pit/unit) per 2 RM strip through ground in depth of 1 feet minimum) and testing after completion complete including taking down/dismantling existing one complete all as directed. (Make “ASHLOK”Model-ASEEL-39, 3m length (ZC & AC) or Multi pressing model mees-60/C. (NOTE:- Excavation & Earthwork are deemed to be inclusive in this item).

M/S RATHIN ENTERPRISES

M/S ROY ENTERPRISE

M/S ANIL KUMAR BAUL

SHRI SURAJIT SIKDER

M/S BIJAY KUMAR SHIVA

M/S MANODEEP CONSTRUCTION

M/S SARDAR MAL NAHATA