REPAIRS AND CLEANING TO OVER HEAD WATER TANK, MONKEY MENANCE, TANK PLATFORM, PLUMBING, PVC PIPE ETC FOR OTM/MD ACCN AT DOMESTIC AREA UNDER GE (AF) BARRACKPORE

Amount

Demolition of un-reinforced cement concrete from roofs, floors (other than ground floors), beams, staircases, landing, chajjas and similar suspended work of any description including removal of rubbish from the site complete all as specified and directed.

Demolition of reinforced cement concrete from roofs, floors (other than ground floors), beams, staircases, landing, chajjas and similar suspended work of any description including reinforcement cut as required to facilitate demolition and removing debries from site of work complete all directed.

Demolition of brick work or stone boulder masonry, built in cement mortar including all quoins, arches, pillars etc. including removing of unserviciable material from site complete all as specified and directed.

Taking down cement plaster of any description built in cement mortar on brick or stone walls etc including racking out joints, hacking for key, scrubbing down with water etc. and removing debrish from site complete all as specified and directed.

Cleaning and removing all scale and dirt, etc, and from tanks of capacity 500 litre and mouths of circulating pipes, tank nipple / cover / ball cock etc. and writting date of cleaning complete all as specified and directed. Note: (i) The Quoted rate shall be included for writting date of cleaning with white/black paint on water tank in stencile. (ii) Any damage occurred to the tank during the process of cleaning the tank shall be replaced with new tank by contractor without any extra cost. (iii) The quoted rate shall include for gurantee of a period of six month from the certified date of cleaning. (iv) All debris and waste material obtained during cleaning of tank shall be disposed at a location decided by Engr-in-Charge at distance n exc 50 meter without any extra cost. (v) The quoted rate shall be also included obtaining signature of user in register duly authenticated by Engr-in-Charge.

All as item No 5.00 above but 1000 litre capacity and ditto-

Supply, hoist and fix 500 litre capacity rotational moulded polyethylene water storage tanks (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part I including dismantling of old unseviciable existing tank complete all as specified and directed.

Supply, hoist and fix 1000 litre capacity rotational moulded polyethylene water storage tanks (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part I including dismantling of old unseviciable existing tank complete all as specified and directed.

Form work to soffits of suspended slabs such as roof slabs, floor slabs, landings and similar work; not exceeding 200mm thick (Horizontal or slopping) with rough finished flat surfaces of concrete complete all as specified and directed.

Material and labour for mild steel TMT bar 10 mm dia and over cut to length bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9mm dia or securing with clips complete all as specified and directed.

All as per item No 10.00 above but 6 to 8mm dia for stirrups, spacer, binders and -ditto-.

Material and labour for RCC (1:2:4) (nominal mix) type B1 (using 20mm graded stone aggregate) in slabs supported on walls, beams and columns in floors, roofs, landings, balconies, canopies, deck slabs and in shelves and the like complete all as specified and directed.

Material and labour for 100mm thick PCC (1:2:4) type B2 (using 40mm graded stone aggregate) as in base for water tanks on roof surface and finishing the surface even and smooth without using extra cement complete all as specified and directed.

Supply and fix in repair 20mm bore PTMT ball valves high pressure with epoxy coated aluminium rod & high density plastic ball screwed complete all as specified and directed.

Supply and fix tank cover made of 1mm thick steel sheet with zinc coating, 600mm dia and 150mm height of spherical shape and gas welded spikes of 2mm dia and 75mm long at 50mm centre to centre of all surface in zig zag pattern and fixed with 50mm long medium weight MS butt hinge locked to 100mm long hasp and staple on existing PVC water tank of 500 to 1000 litre capacity complete all as specified and directed.

Material and labour for brick work with sub class `B` bricks, old size, straight or curved on plan exc 6m mean radius built in cement mortar (1:6) complete all as specified and as directed.

Materials and labour for half brick thick brick work with sub class `B` bricks, old size straight or curved on plan to any radius built in cement mortar (1:4) complete all as specified and directed.

Materials and labour for 15 mm thick rendering on fair faces of brick work or concrete surfaces in cement mortar (1:4) and finished the surfaces even and smooth without using extra cement complete all as specified and directed.

Material and labour for preparation of newly plastered wall surfaces and applying two coats of cement base paint over a coat of alkali resistant primer complete all as specified and directed.

Material and labour for PCC 1:2:4 type B-1 (20mm graded aggregate) as in coping, bed plates, kerbs, water troughs and the like including weathering, slightly rounded or chamfered angles and throating including necessary formwork complete all as specified and directed.

Cutting holes into or through brick walls built in cement mortar and making good in cement mortar 1:3 or cement concrete 1:2:4 type B-l as required superfacial area not exc 150 sqcm complete all as specified and directed.

Supply and fix in repair PVC (SWR) pipes 75mm bore single socketed in any length with rubber ring joints laid in trenches or in floors complete all as specified and directed .

Supply and fix in repair PVC (SWR) pipes 75mm bore single socketed in any length with rubber ring joints fixed to walls complete all as specified and directed .

Supply and fix in repair PVC (SWR) pipes 110mm bore single socketed in any length with rubber ring joints laid in trenches or in floors complete all as specified and directed .

Supply and fix in repair PVC (SWR) pipes 110mm bore single socketed in any length with rubber ring joints fixed to walls complete all as specified and directed .

Supply and fix in repair 110mm bore PVC (SWR) junction single, (Single T) equal or unequal with access door complete all as specified and directed.

Supply and fix in repair 110mm bore PVC (SWR) bends of any radius and provided with access door complete all as specified and directed .

Supply and fix in repair 110mm dia PVC (SWR) branch piece, single (single Y) equal or unequal complete all as specified and directed

Supply and fix in repair 110mm dia PVC (SWR) vent cowl complete all as specified and directed.

Supply and fix in repair 75 mm bore PVC (SWR) plain bend any radius complete all as specified and directed.

Supply and fix in repair 75 mm bore PVC (SWR) junction single, (single T) equal or unequal complete all as specified and directed.

Supply and fix in repair 75mm dia PVC (SWR) branch piece, single (single Y) equal or unequal complete all as specified and directed

Supply and fix in repair 75mm dia PVC (SWR) vent cowl complete all as specified and directed.

Supply and fix in repair 40mm dia PVC (HDPE) pipe including all fittings of pressure rating 6 Kg/Sqcm fixed complete to walls, ceilings or in floors complete all as specified and directed.

Taking up or down 15 mm bore steel tubing and connections, including cleaning for refixing or removal to store complete all as specified and directed.

All as per item No 35.00 above but 20mm bore and -ditto-.

All as per item No 35.00 above but 25mm bore and -ditto-.

Supply and fix 15 mm bore steel tubes medium grade, galvanised, with all fitting and fixed to walls, ceilings, roofs or laid in floors complete all as specified and directed.

All as per item No 38.00 above but 20mm bore and -ditto-.

All as per item No 38.00 above but 25mm bore and -ditto-.

Laying / fixing only 15 mm bore steel water tubing with and including all fittings and fixed to walls and ceilings or laid under floors complete all as specified and directed. Note;- Serviciable GI pipe shall be refixed under this item obtained from item No 35.00 after taking up/ down.

All as per item No 41.00 above but 20mm bore and -ditto-. Note;- Serviciable GI pipe shall be refixed under this item obtained from item No 36.00 after taking up/ down.

All as per item No 41.00 above but 25mm bore and -ditto-. Note;- Serviciable GI pipe shall be refixed under this item obtained from item No 37.00 after taking up/ down.

Supply and fix in repair 20mm dia PTMT nipple suitable for HDPE water tank (minimum weight 45gms) complete all as specified and directed.

Supply and fix in repair 25mm dia PTMT nipple suitable for HDPE water tank (minimum weight 65gms) complete all as specified and directed.

Supply and fix in repair PVC tank cover (ISI marked) for PVC water storage tanks of exc. 500ltr and n.exc. 1000ltr capacity and locked with nasessary arrengments and 2mm dia GI wire complete all as specified and directed.

Supply and fix in repair 20mm bore Gun-metal, globe or gate valves, with iron wheel head, screwed both ends for iron pipe and fixed complete all as specified and directed.

Supply and fix in repair 25mm bore Gun-metal, globe or gate valves, with iron wheel head, screwed both ends for iron pipe and fixed complete all as specified and directed.

Material and labour for applying evenly a tack coat of industrial bitumen 85/25 at the rate of 1.2 kg per sq.m including cleaning surface complete all as specified and directed

Material and labour for preparation of newly bitumen surfaces and applying two coats of aluminum paint @ 0.10 ltrs per sqm per coat complete all as specified and directed.

Cutting down vegetation growths like plants/ trees of girth n. exc 15cm from roof tops/ sides, external walls of bldgs, chajjas, wall juctions at junction of rain water/ CI waste water pipe junctions including removal of roots and taking out carefully possible quality of concrete in roofs embedded in walls/ slab surfaces making good affected locations and applying approved chemical (herbal medcine) to arrest further growth and making good the distrubed surfaces with PCC (1:2:4) type B-1 or CM 1:2 complete all as specified and directed. Note : The unit rate quoted shall be deemed to include the cost of scaffoloding/ staging upto four storey height bldgs.

Complete removal of existing roof treatment in any layers and disposal of debris from site complete all as specified and directed. Notes: - (a) The rates are inclusive of removal for any type of old water proofing treatement over main RCC slab. (b) Bidders are advised to visit the site and esure about site condition before quoting their rates. (c) Taking down of cement plater/PCC if any shall be measured and paid saparately under respective items.

Material and labour for 15mm thick rendering in cement mortor (1:4) on RCC roof slab mixed with water proofing compound @ 200 ml per bag of cement or as per manufacturer instruction and finish the surfaces even and smooth without using extra cement on roof including taking down existing cement plaster complete all as specified and directed. Note : WPC will be measured and paid separately under respective item.

Supply only liquid water proofing compound (WPC) complete all as specified and directed.

Material and labour for water proofing treatment to RCC roof surface comprising with the following course of treatment/specifications from bottom to top :- (a) Applying cold bituminous primer @ 0.30 liters per sqm confirming to IS 3384 over plastered surfaces of roof. (b) One layer of APP based polymeric membrane 3mm thick, weight not less than 3.50 kgs per sqm, reinforced with non woven polyester matt central core fabric (weight not less than 160 GSM) and coated on both side with and including layer of APP modified bitumen and finished with and including micro-prefabricated heat fusible polythene film on both surfaces. (c) Applying one coats of hot bitumen 85/25 grade @ 1.20 kg per sqm over membrane surface. (d) Finally applying two coats of aluminum paint @ 0.10 ltrs per sqm per coat on top surface. Contd...

Note:- (i) The work shall be executed only through authorised applicator of manufacturer as approved by GE. (i) Laying of APP based polymeric membrane shall be done by torch on method or as per manufacturers instructions. (ii) A minimum overlap of 150mm and 100mm should be made in the end and sides of the polymeric membrane respectively and sealed all overlaps and joints as per manufacturers instructions. Make of APP membrane:- Super Thermolay of M/s STP Ltd, Hyperplas of M/s IWL India Ltd, Hydrostop of M/s Tiki Tar Danosa (India) pvt ltd, , M/s FOSROC Chemicals, Smartcare APP membranes of M/s Asian Paints Ltd.

Material and labour for cutting out cracks to V-section in existing roof or terracing, cleaning out wetting, grouting with crack filling epoxy material complete all as specified and directed.

TAPAS ENGINEERING CO (BID ID -3124637)

Renuka Fero Products (BID ID -3124710)

ROY CONSTRUCTION (BID ID -3124959)

S. N. ENTERPRISE (BID ID -3125047)

BISWAS CONSTRUCTION (BID ID -3125411)

BHATTACHERJEE CONSTRUCTION (BID ID -3125646)

KAMAL ENGINEERING (BID ID -3125506)