SPL REPAIR TO OVER TANK NEAR BLDG NO NP-03 AT BMC UNDER GE (CENTRAL) KOLKATA

Amount

Demolition of cement concrete (Un-reinforced) in ground floor and paving n. exc. 15cm thick below or above ground level complete all as specified and directed

Taking down Cement Plaster of any descrip-tion on Brick Walls, Concrete Surfaces includ -ing racking out joints, hacking for key, scrubb -ing down with Water, remove dust, debries/ rubbish, etc., complete all as specified and as directed.

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

Supply & fixing double steel scaffolding system (cup lock type) on the exterior side of bldg / structure, over head tank upto 25 meter height, above GL, of including additional rows of scaffolding in stepped manner as per requirement of site, made with minimum 40 mm dia MS Tube, placed 1.5 meter C/C (maximum), horizontal & vertical tubes joint with cup & lock system with MS Tubes, MS Tube challis, MS clamps and stair case system in the scaffolding for working platform etc and maintaining it in a serviceable condition for execution of wk and removing thereafter, the scaffolding system shall be stiffened with bracings, runners, connecting with bldg etc wherever reqd, if feasible, for inspection of wk at reqd locations with essential safety features for workmen etc complete all as specified and direction by Eng-in-Charge. Note: The scaffolding system shall be kept functional till the repair work to bldg/structure/ OH Tank is not over.

Material and labour Chipping of unsound/weak concrete materials of 50mm average thickness from column/slabs/Chajja/beams with lightly packing materials by ait blasting or sand blasting including tapering all edges, making square shoulders of cavities etc and disposal of all debris out of MOD land, complete all as specified and as directed by the Engr-in-Charge.

Material and labour Chipping of unsound/weak concrete materials of 30mm average thickness from column/slabs/Chajja/beams with lightly packing materials by air blasting or sand blasting including tapering all edges, making square shoulders of cavities etc and disposal of all debris out of MOD land, complete all as specified and as directed by the Engr-in-Charge.

M&L for Drilling 20mm dia holes in RCC slab, wall, column, beams to a depth of 200mm for anchoring steel reinforcement bars including washing with water, inserting polyster resin, grout in holes and making good to facings where required and pointing in cement mortar 1:3 complete all as directed and as per manufacturer instruction.

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

M &L Removing rust from existing corroded reinforcement by any means and application of Rust Remover such as Hind Rust Clean (M/s Hindcon) or equivalent from M/s Pidilite/Fosroc and then washing the same to make the reinforcement scale free complete all as specified and directed Engineer-in-Charge Note : measurement shall be made of exposed RCC area

M &L Application of anticorrosive paint such as Hind Anti Rust (M/s Hindcon) or equivalent from M/s Pidilite/Forsoc on cleaned reinforcement as per manufacturer's specification complete all as specified and directed by Engineer-in-Charge. Note : measurement shall be made of 25% of exposed area

M&L Application of bonding coat based on polymer modified cementious material such as Nitobond SBR/Hind Styrene BR (M/s Hindcon) or equivalent from M/s Pidilite/Forsoc @ 0.50 Kg/Sqm (due to rough concrete surfaces) to act as bonding agent between old and new concrete as per manufacturer's specification complete all as specified and directed by Engineer-in-Charge. Note : measurement shall be made of exposed RCC area

M&L Pressure guniting at a pressure not less that 6Kg/Sqcm to surface of column, beam, ceiling, facia and similiar structural members in polymer modified concrete with mix ratio 1:1.5:3 (1 cement : 1.5 Coarse Sand : 3 Stone aggregate of 10mm nominal size) admixed with acrylic latex polymer such as Hind Styrene BR/Nitobond SBR (M/s Hindcon) or equivalent from M/s Pidilite/Forsoc @ 3.00 Kg per Sqm and plasticiser Hind Plast Super/Conplast SP 337 (M/s Hindcon) or equivalent from M/s Pidilite/Forsoc @ 100Gms per Sqm for an average thickness of 50mm (the concrete to be applied when the bonding coat is still green) including formwork etc. as per manufacturer's specification complete all as per direction of Engineer-in-Charge.

M&L for pressure guniting at a pressure not less that 6Kg/Sqcm to surface of column, beam, ceiling, facia and similiar structural members in polymer modified conrete with mix ratio 1:1.5:3 (1 cement : 1.5 Coarse Sand : 3 Stone aggregate of 10mm nominal size) admixed with acrylic latex polymer such as Hind Styrene BR/Nitobond SBR (M/s Hindcon) or equivalent from M/s Pidilite/Forsoc/STP @ 3.00 Kg per Sqm and plasticiser Hind Plast Super/Conplast SP 337 (M/s Hindcon) or equivalent from M/s Pidilite/Forsoc @ 100Gms per Sqm for an average thickness of 30mm (the concrete to be applied when the bonding coat is still green) as per manufacturer's specification and direction of Engineer-in=-Charge

M&L Applying polymer modified cement mortar rendering 15mm thick in CM 1:3 on wall duly mixing polymer modifier "Nitobond SBR of M/s Forsoc Chemical India (Pvt) Ltd" or "Hind Styrene BR of Hindcon Chemical Ltd" or equivalent make of M/s Pidilite Industries @ 7 Litre per bag of cement complete finished even and smooth without using extra cement as per manufacturer's specification complete all as specified and directed.

M&L for applying polymer modified cement mortar rendering 10mm thick in CM 1:3 on ceiling surface duly mixing polymer modifier "Nitobond SBR of M/s Forsoc Chemical India (Pvt) Ltd" or "Hind Styrene BR of Hindcon Chemical Ltd" or equivalent make of M/s Pidilite Industries @ 7 Litre per bag of cement complete finished even and smooth without using extra cement complete all as specified and as per manufacturer's specification.

M&L for drill packer holes at 45 degree angle to the concrete. Dimension of the drill hole depending on the used packer and thickness of the wall. Fix only the non-return valve (e.g., nipple) on the first (starting) packer . In horizontal cracks the starting packer is the one at narrowest part of the crack and filling with polymer modified mortar mixed with ShaliCrete 47 from STP or equivalent make of M/s Hindcon/Pidilite/Fosroc. Pressure grouting construction joints and honeycomb areas with cement mixed with ShaliGrout IP from STP or equivalent make of M/s Hindcon/Pidilite/Fosroc @1% by weight of neat cement complete all as specified and directed.

M&L for application two coats of acrylic polymer slurry coating on 10 x 10 count glass fibre wooven mesh over the cured plastered inside surfaces of tank with Hind Crete Plus WPM (M/s Hindcon) or equivalent from M/s Pidilite/Forsoc after proper cleaning by brushing washing etc to act as waterproofing membrane complete all as specified and directed

M&L for Hygienic Coating on vertical & horizontal surface using ShaliFloor TC WB 2E as a two component, solvent-less,water based,low odour, polyamine modified epoxy coating.It acts as a tough abrasion resistant coating that withstands wear and chemical attack in a variety of applictions. Consumption gm/m2-200 in 2 coats. System: Providing and applying ShaliFloor TC WB 2E mix component - A(Resin) & B(Hardener) thoroughly by using speed drill mixer with a spiral type blade at the bottom of stirrer rod. The speed may be 1000 rmp till homogeneous mix is obtained. Then add component B (Resin) slowly, ensuring complete dispersion. After stirring, wait for the product to settle in order to let entrapped air escape.Prime the surface using ShaliFloor® TC WB 2E and allow to dry and apply ShaliFloor® TC WB 2E by brush / roller on the primed surface complete all as specified and directed.

M&L rendering 10mm thick in CM (1:3) on concrete ceiling surfaces finished the surfaces even and smooth without using extra cement and using water proofing compound as per manufacturer instruction complete all as specified and directed Note :- WPC will be measured and paid separately.

M&L Rendering 15mm thick in Cement Mortar on fair faces of brick work or concrete surface of wall in two layer, first layer 10 mm thick in cement morter (1:4) and top layer 5mm thick in cement morter (1:4) using water proofing compound and finishing the surface even and fair without using extra cement complete all as specified and as directed. . NOTE:-WPC shall be measured and paid separately

"Supply only" liquid water proofing compound (ISI marked) complete all as specified and directed. Make:- STP NO 1/ PEDILITE(DR FIXIT)/ FOSROC/ CICO/ SIKA

Supply and Application Curing compound over concrete surfaces as per mufacturer's instructions complete all as specified and as directed by the Engr-in-Charge. Make : Fosroc/Elantas beck/Kunal conchem/ Sika/ Hindcon Chemicals Ltd

M&L Preparing new plaster surfaces and Finishing walls with Premium Acrylic Smooth exterior paint with Silicone additives of required shade: New work/new work (Two or more coats applied @ 1.43 ltr/10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/10 sqm) complete all as specified & directed.

S&F rolled mild stee in Roof trusses (framed) , trussed , purlines, crane gantries, rails and fastening and heavy bracket framing (Beam, tee, angle, channel or Flat section) including distance pieces , cleats etc Fe-410W (Gde E-250 Quality `A' complete all as specifed and directed.

M&L for preparation of old surfaces of steel or steel based materials of any descriptionand applying one coat of synthetic enamel paint over 10 Cm width or girth complete all as specified and directed

Preparation of new steel surfaces of any description, over 10cm in width or girth, not otherwise described and applying two coats of synthetic enamel plaint over a coat of red oxide all as specified and directed by Engineer-in-Charge.

M&L Writing letters or figures ( any nos) in white colou over black colour background box of size 30 Cm x 30 Cm ( Block, Roman, Italic or Indian) n.exc 30 Cm height complete all as specified and as directed.

M&L for 100mm thick plain cement concrete type D-2 (1:4:8) (Using 40 mm graded crushed stone aggregate) as in sub base complete all as specified and directed.

Providing and laying 60mm thick factory made chamfered edge cement concrete paver block of M-35 grade with approved colour,design & pattern as in footparth, parks,lawns, drive ways or light traffic parking etc., of required strength, thickness & size/ shape, made by table vibratory method using PU mould, laid in required colour & pattern over and including 50mm thick compacted bed of fine sand, compacting and proper embedding/ laying of inter locking paver blocks into the sand bedding layer through vibratory compaction by using plate vibrator, filling the joints with sand and cutting of paver blocks as per required size and pattern, complete all as spcified and directed.

Excavation in trenches n.exc 1.5 m wide and n.exc 1.5 m in depth for foundation, etc and getting out in soft/loose soil for layiing of water supply pipe line complete all as specified and directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 Cm as in soft/loose soil complete all as specified and directed.

Removing excavated material ( soils of any type) not exc. 50 m and depositing where directed at a level not exc 1.5 m above the starting point complete all as specified and directed.

Taking out existing GI/ CI/ DI/ MS water pipe line of 150 bore (dia) from trenches, walls, vertical position of OHT etc including cleaning and removing any blockages for refixing or removal of unserviceable pipe from site complete all as specified and directed.

Taking out existing GI/ CI/ DI/ MS water pipe line of 100 bore (dia) from trenches, walls, vertical position of OHT etc including cleaning and removing any blockages for refixing or removal of unserviceable pipe from site complete all as specified and directed.

Supply and Laying Steel Water Tubing of 100 bore (dia), Galvanised, ‘Medium Grade’, laid in trenches or vertical position of OHT using clamp of required size and including all fittings and fixing accessories for securing the vertical pipe, complete as all specified and as directed.

Supply, Laying, testing and commisioning Cast Iron Pipe with flanged ends of size 150 mm bore centrifugually cast Class-A, laid in trenches or vertical position of OHT using clamp of required size and including all fixing accessories for securing the vertical pipe, complete all as specified and directed.

All as per item No. 36.00 here in before but for 100mm bore.

Supply and fix Cast Iron Sluice valve of 150 mm bore of pressure rating PN-1.6 conforming to IS : 14846 – 2000 specifications comprising of cast iron body with control assembly of flanged both ends, stainless steel spindle with extended iron rod of 25mm dia & 3.00 m long alongwith iron wheel head, bolts, nuts & washers with 3mm thick rubber gaskets including taking down the unserviceable valve with fittings complete as specified and as directed by the Engineer - in – Charge.

All as per item No. 38.00 here in before but for 100mm bore

Materials and labour Run lead joint for CI pipe 150 mm bore including spun yarn etc complete all as specified and as directed by Engr-in-Charge.

All as per item no. 40.00 above but 100 mm dia

S&F CI 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 and plugs upto 150mm bore including taking down the old unserviceable one complete all as specified and directed.

S&F CI Bends. Tapers. Tee pieces (single & double branch) any type and angle/radius and straight connecting pieces but all ends flange upto 150mm bore including taking down the old unserviceable one complete all as specified and directed.

S&F CI Connecting pieces one end flanged and other socket or spigot and bell mouth pieces one end flanged other end tapering as bell mouth upto 150mm bore including taking down the old unserviceable one complete all as specified and directed.

Materials and Labour for Construction of brick masonary valve pit chamber of sizse 1050x1050x1050mm internal dimension using sub class-'B' bricks in CM (1:6) plastering in cement mortar (1:4) externally & internally extended to 15 cm below ground level including PCC bed 10 cm thick in PCC 1:3:6 Type C2 with MS frame fabricated by angle of size 40 x 40 x 6mm complete with top cover of 3 mm thick MS sheet & locking arrangement and painting with two coats of synthetic enamel over a coat of red oxide primer including demolition of old unserviceable damged valve pit complete all as specifed & directed.

SUDHA ENTERPRISES (BID ID -3306222)

DIPAK ENTERPRISE (BID ID -3302253)