REPAIRS AND CLEANING OF SEWAGE LINES MANHOLES SEPTIC TANKS GREASE TRAPS FLOOR TRAPS GULLY TRAPS ETC TO VARIOUS BLDGS AT KANCHRAPARA JAFFARPORE LOS DUM DUM AND 6 WING UNDER GE AF BARRACKPORE

Amount

Material and labour for cleaning and de-sludging of existing septic tank / grease traps completely of solid /liquid sludge by pumping from inside the septic tank and removal of sludge depositing in excavated pits (required size and depth) to a distance not exc 50 mtr. Top layers of excavated pit covered by layers of 150 mm deep earth spreading with bleaching power @ 200 gms per sqm for disinfection purpose complete all as specified and directed. Note:- (i) After dewatering, sludge will be measured and paid accordingly. (ii) The rate of excavation of earth pits of required size and depth within 50 mtr from septic tank and bleaching powder is deemed to be inclusive in the quoted rate.

Material and labour for systematically cleaning and de-silting / de-sludgeing of blocked sewage pipe line 150 mm dia and any depth including taking out sludge / silt and other foreign materials from manhole and gully traps of any size and depth by rodding with using steel rod or split bamboo sticks throughly from both sides between adjacent manholes still clearing flow of sewage line is observed, passing knots kamto and disc of required size or pumping out liquid waste / sewage, plugging and diverting the flow to the drain if necessary and stacking the removed silt / slugde in deposits as directed including taking precuationary measures such as safety belts, dry cell torch for lighting inside the manoles and drain etc, sprinkling bleaching power on the silt / sludge removed to avoid bad smell and disposal of silt in excavated pit including spreading of bleaching powder complete all as specified and directed. NOTE - Quoted rate deemed to be inclusive of excavation of earth pits and bleaching powedr required for disposal of silt.

All as per item No 2 above but for 100 mm dia of pipe and any depth and -ditto-.

Material and labour for cleaning of choked WC / bath room trap and kitchen trap upto first manhole of any type and size as and when complaints occurred with using hand pressure or vacume pressure etc. complete all as specified and directed.

Material and labour for cleaning and removing all scale and dirt etc.by mechanical means (i.e stage-1 - mechanized de-watering, stage-2 -mechanized sludge removal, stage-3 - high pressure cleaning by pressure jet, stage-4 -scrubbing by mini hand scrubber machine, stage-5 - high pressure cleaning by pressure jet, stage-6 - vacuuming by industrial vacuum cleaner, stage-7 - Anti bacterial spray (hydrogen peroxide), stage-8 - UV-Ray treatment. from tanks and from mouths of circulating pipes etc capacity exc. 250.00 litre and not exc. 500.00 litre complete all as specified and directed. Note:- (i) Any damage occured to the tank during the process of cleaning the tank shall be replaced with new tank by the contractor without any extra cost. (ii) The quoted rate shall include for guarantee of a period of six month from the certified date of cleaning. (iii) All debris and waste material obtained during cleaning of tank shall be disposed at a location decided by Engineer -in- Charge distance exc 0.5 Km but not exc 1.5 km without any extra cost. (iv) The quoted rate shall be also included obtaining signature of user in register duly authenticated by Engineer -in- Charge.

All as per item No 5.00 above but capacity exc. 500.00 litre and not exc. 1000.00 litre and -ditto-.

Material and labour for dewatering and cleaning and removal of all scales and dirt etc from static water tank of capacity 50000 ltr to 60000 ltrs complete all as specified and directed.

All as per item No 7.00 above but capacity 60001 ltrs to 80000 ltrs and -ditto-.

Cleaning the blockage in CI / AC / PVC soil / waste / rain water pipes of dia n. exc 150mm by removing cleaning eye and re-fixing the same after cleaning the pipe making good the damaged cement joints up to 1st floor complete all as specified and directed. Note:- Quoted rate shall be included for required scaffolding.

All as per item No 9.00 above but above 1st floor and up to 4th floor and -ditto-.

Material and labour for 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 / 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 quoted rate shall be deemed to include the cost of scaffoloding / staging upto four storey bldgs.

Taking out old broken brick bats from filter beds of soak wells, cleaning with water including screening and stacking for reuse and cleaning the base of filter bed with water and removing the unserviceable brick bats to a distance n. exc. 50m in low lying area complete all as specified and directed.

Material and labour for loose filling with broken brick bats of gauge 80mm to 150mm in filter bed of soakage well, soakage pit complete all as specified and directed.

Supply and fix in repair vitreous china white squatting pan of ‘Orissa’ pattern, size 580 x 440mm with integral foot rests including ‘P’ or ‘S’ trap, (excluding flushing cistern and flush pipe), including provn of cement concrete bedding (1:5:10) type E1 (using 20mm graded stone aggregate) complete all as specified and directed

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

Demolition of brick work or stone boulder masonry, build in cement mortar including all quoins, arches, pillars etc. complete all as specified and directed.

Taking down cement or lime plaster of any description from stone or brick walls etc including raking out joints, hacking for key scrubbing down with water etc. complete all as specified and directed.

Demolition and breaking up drain pipes of 150 mm bore (salt glazed stoneware, PVC, AC or reinforced concrete) set in cement mortar including PCC bedding complete all as specified and directed.

All as per item No 18.00 above but 100mm bore and -ditto-.

Surface excavation n.exc 30 cm deep and averaging 15cm deep and getting out in soft/loose soil complete all as specified and as directed.

Excavation in trenches n. exc 1.5 m wide and n. exc 1.5 m in depth for foundation etc or for cess well cess pits man holes pillar holes etc n.exc 10 sqm on plan n.exc 1.5 m in depth and getting out soft/loose soil complete all as specified and directed.

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

Removing excavated material not exc 50 m and depositing where directed at a level not exc 1.5 m above the starting point as in soft/loose soil complete all as specified and directed.

Material and labour for cement concrete (1:3:6) type C-2 (using 40 mm graded stone aggregate) as in bed to drain pipes of 150 mm bore including packing under and haunching against the sides of pipe after they are laid and tested complete all as specified and directed.

All as per item No 24.00 above but 100mm bore and -ditto-.

Material and labour for PCC (1:4:8) type D2 (using 40 mm graded stone aggregate ) as in foundation, filling and mass concrete complete all as specified and directed.

Material and labour PCC (1:3:6) type C1 (using 20 mm graded stone aggregate ) as in foundation, flooring, sub base, paving, surface channels, drains complete all as specified and directed.

Material and labour for precast RCC (1:2:4) type B1 (20 mm graded agregate) as in landings, cover slabs (for man holes etc.), chullha hoods, chajjas, water troughs, shelves and similar articles of any thickness and any size as required at site set jointed and pointed in cement mortar (1:4) including demolition of old existing re-inforced concrete complete all as specified and directed.

Extra for forming fair finished drain or channel 30 cm inner girth in cement concrete, using extra cement, including forms, moulds, mitred /stopped ends etc complete all as specified and as directed. Note : Inner girth only shall be measured for payment.

Add or deduct for each 25 mm girth or part thereof over or under 30cm -ditto-

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

Material and labour for brick work with sub class 'B' bricks straight or curved on plan exc.6 mtr radius built in cement mortar (1:4) as in manhole etc. complete all as specified and directed.

All as per item No 32.00 above but except bricks and -ditto-. Note:- Serviciable bricks obtained from item No 16.00 shall be reused under this item.

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 ends and binding with and incl. mild steel wire (annealed) not less than 0.9 mm dia or securing with clips. complete all as specified and directed.

Material and labour for mild steel TMT bar 6mm to 8mm mm dia and over cut to length bent to shape required, including cranking, bending spirally for hooping ends and binding with and incl. mild steel wire (annealed) not less than 0.9 mm dia or securing with clips. complete all as specified and directed.

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

Material and labour for 15 mm thick rendering in cement mortar (1:4) on other than fair faces of brick work and finished surface even and smooth with using extra cement by brushing neat cement slurry with 3.0 kg of cement per sqm complete all as specified and directed.

Material and labour for 15mm thick rendering in cement mortar (1:4) on fair faces of brick work in two layers, first layer of 10mm thick and top layer of 5mm thick mixed with liquid water proofing coumpound (WPC) @ 200ml per bag of cement or as per manufacturers instruction and finish the surfaces even and smooth without using extra cement as in wall complete all as specified and directed. Note : WPC will be measured and paid separately under respective item.

Material and labour for preperation of plastered or unplastered old decorated surfaces by brooming down or steel wire brushing and applying three coat of white wash on walls and cornices complete all as specified.

Supply and fixing 150 mm bore sail-glazed stoneware drain pipes laid in trenches and jointed complete all as specified and directed.

Supply and fixing 110 mm bore PVC(SWR) pipe double socketed laid in trenches and jointed complete all as specified and directed.

Supply and fix in repair 110 mm bore PVC (SWR) pipe single socketed, in any length with rubber ring joint laid in trenches or fixed to wall complete all as specified and directed.

Supply and fix in repair 75 mm bore PVC (SWR) pipe single socketed, in any length with rubber ring joint laid in trenches or fixed to wall complete all as specified and directed.

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

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

Supply and fix in repair 110 mm bore PVC (SWR) junction single, (Single ‘T’) equal or unequal with access door complete all as specified and directed.

Supply and fix in repair 75 mm bore PVC (SWR) junction single, (Single ‘T’) equal or unequal with access door complete all as specified and directed.

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

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

Supply and fix in repair 110 mm bore PVC (SWR) reducer complete all as specified and directed

Supply and fix in repair 75 mm dia PVC (SWR) floor trap plain with grating including jointing with solvent cement complete all as specified and directed.

Supply and fix in repair 125 / 110 mm size PVC (SWR) gully trap, setting and jointing with solvent cement complete all as specified and directed.

Disconnecting existing tanks of capacity exc 250 litre but not exc 500 litre, setting aside (or lowering if required) for repairs, cleaning, etc. and hoisting if required reconnecting and re-fixing in position (cleaning repairing, etc. measured separately) complete all as specified and directed.

All as per item No 53.00 above but capacity exc 500 litre but not exc 1000 litre and -ditto-.

Supply, hoist and fix 500 litre capacity rotational moulded polyethylene water storage tanks three layered (cylindrical vertical with closed top) including dismantling of old existing tank complete all as specified and directed.

All as per item No 55.00 above but 1000 litre capacity and -ditto-.

Supply and fix PVC lid for water storage tank of any capacity including removing of old existing broken lid 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 58.00 above but 20mm bore and -ditto-.

All as per item No 58.00 above but 25mm bore and -ditto-.

All as per item No 58.00 above but 32mm 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 62.00 above but 20mm bore and -ditto-.

All as per item No 62.00 above but 25mm bore and -ditto-.

All as per item No 62.00 above but 32mm bore and -ditto-.

Laying / fixing only 15 mm bore steel water tubing medium grade galvanised 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 58.00 after taking up/ down.

All as per item No 66.00 above but 20mm bore and -ditto-. Note;- Serviciable GI pipe shall be refixed under this item obtained from item No 59.00 after taking up/ down.

All as per item No 66.00 above but 25mm bore and -ditto-. Note;- Serviciable GI pipe shall be refixed under this item obtained from item No 60.00 after taking up/ down.

All as per item No 66.00 above but 32mm bore and -ditto-. Note;- Serviciable GI pipe shall be refixed under this item obtained from item No 61.00 after taking up/ down.

Supply and fix in repair 15mm bore stop valves chromium plated fancy type screwed both ends for iron pipe or unions complete all as specified and directed.

All as per item No 70.00 above but 20mm bore and -ditto-.

Supply and fix in repair 15mm bore gun metal globe or gate valve, with iron wheel head, screwed both ends for iron pipe complete all as specified and directed.

All as per item No 72.00 above but 20mm bore and -ditto-.

All as per item No 72.00 above but 25mm bore and -ditto-.

Supply and fix in repair 15 mm bore PVC ball brass valves, high pressure, with polythene float and fly nut complete screwed for iron pipe or brass ferrule complete all as specified and directed.

All as per item No 75.00 above but 20mm bore and -ditto-.

All as per item No 75.00 above but 25mm bore and -ditto-.

Material and labour for writing letters or figures / Numericals (Block, Roman, Italic or Indian) not exc. 30 cm high with synthetic enamel paint complete all as specified and directed.

Material and labour for obliterating old writing of any description n. exc 0.10 sqm with paint to match existing work as on tank surface complete all as specified and directed.

Supply and fix in repair cast iron floor trap with gratings incl jointing to waste pipes 100 mm dia outlet fixed in cement concrete (1:2:4) type B1 (using 20 mm graded stone aggregate) complete all as specified and directed.

Supply and fix in repair grating doom 125mm dia with waste hole of PTMT (minimum weight 40 gms) complete all as specified and directed.

Supply and fix in repair 32 mm Low density polyethylene (LDPE) pipes of pressure rating 6 kgf/sq cm complete all as specified and directed.

CHANDRA CONSTRUCTION & CO.

NC BOSE AND CO

BIKASH CHANDRA NEOGI