CLEANING AND REPAIR TO SEWAGE DISPOSAL, DRAINS, MANHOLE COVERS, DRAIN COVERS ETC AT OD ALIPORE, SAHAPORE AND RASPUNJA UNDER GE (C) KOLKATA

Amount

Demolition of brick work or stone masonary built in cement mortor including all quoins & jambs etc. complete all as specified and directed

Taking down cement plaster of any description on brick work or stone msonary wall including racking ot joints hacking for key scrubbing down with water etc. complete all as specified and directed

Demolition of plain concrete (un-reinforced) in ground floors and pavings n exc 15 cm thickness complete all as specified and directed

Demolition of stone slabs and tiles of any description or thickness in floors, aprons etc. laid, bedded and pointed in mortar complete all as specified and directed.

Demolition and breaking up 150mm dia drain pipes (Salt glazed ware, AC, PVC or Reinforced concrete pipe) set in cement mortar complete all as specified and directed.

Same as item No. 5 here-in-before but for 200mm dia pipe

Dismantling of 100mm dia cast iron, PVC or reinforced concrete drain pipes, jointed in cement mortar and taking out of trenches, if required complete all as specified and directed

Same as item No. 7 here-in-before but for 150mm dia pipe

Same as item No. 7 here-in-before but for 75mm dia pipe

Demolition of reinforced cement concrete of any description and in any position not otherwise specifically provided for complete all as specified and directed.

Excavating in trenches through manual mean in soft/loose soil, nexc 1.5 m wide and nexc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. nexc 10 sqm on plan and nexc 1.5 m in depth and getting out complete all as specified and directed

Same as item No. 12 here-in-before but depth exc 1.50 m but nexc 3.00 m

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 n exc. 50m and depositing where directed at a level n exc. 1.5 m above the starting point as in soft/loose soil complete all as specified and directed

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

M&L for plain cement concrete type B-0 (1:2:4) (Using 12.50mm graded crushed stone aggregate) as in coping, benching etc complete all as specified and directed.

M&L for precast reinforced cement concrete Type B-1 (1:2:4) (Using 20mm graded crushed stone aggregate) as in landings, cover slabs (for man holes, drain etc.) chullah hoods and similar articles with plain faces with plain fair faces, including chamfers, weatherings, throating etc. and setting in cement mortar 1:4 complete with joints to match complete all as specified and directed Note: (i) Necessary form work shall deemed to be included in quoted rates. (ii) Reinforcement shall be measured and paid separately under relevant item of these schedule.

M&L fly ash bricks pulverizes using class 'A 'old size bricks straigth or curved on plan exc 6m mean radius built in CM (1:4) cmplete all as specified and directed.

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

S&F for Framed work such as grills, gratings, etc.. with ends of bars shouldered and/or riveted, or forged into spikes; framed guard bars; barred iron doors; ladders; framed balusters; walk ways; railings; framework of water tanks and similar work conforming to Fe.290.Gde-E-165 complete all as specified and directed

M&L for 150mm 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.

M&L for 100mm thick plain cement concrete type C-2 (1:3:6) (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, finishing and sweeping extra sand complete all as specified and directed

M&L for 25mm thick prepolished coloured PCC chequered tiles of size 400 x 400 x 25mm set and jointed in neat cement slurry and pointed in coloured cement to match the shade of tiles with and including 20mm thick screed bed in CM 1:6 complete all as specified and directed

M&L rendering 15mm thick in CM (1:4) on fair faces of brick work or concrete surfaces finished the surfaces even and fair without using extra cement and using water proofing compound as per manufacturer instruction complete all as specified and directed

Supply only liquid water proffing compound as required

M&L for 150mm dia Reinforced concrete pipes, class NP-3, laid and jointed with collars complete all as specified and directed

Same as item No. 27 here-in-before but 200 dia Reinforced concrete pipe

M&L for Concrete bed Type C-2 (1:3:6) (Using 40mm graded crushed stone aggregate) to 150mm dia drain pipes including packing under, and haunching against the sides of pipes after they are laid and tested complete all as specified and directed

Same as item No. 29 here-in-before but 200 dia drain pipe

S&F work for UPVC (SWR) 75mm bore Branch pieces, double (equal or unqual), ordinary or inverted (spigot or socket type) or with parallel branches or fitted with oval access doors complete all as specified and directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

S&F work for UPVC (SWR) 110mm bore Branch pieces, single (equal or unqual), ordinary or inverted (spigot or socket type) or with parallel branches or fitted with oval access doors complete all as specified and directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

S&F work for UPVC (SWR) 110mm bore Branch pieces, double (equal or unqual), ordinary or inverted (spigot or socket type) or with parallel branches or fitted with oval access doors complete all as specified and directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

S&F work for UPVC (SWR) 75mm bore cowls complete all as specified and directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

S&F work for UPVC (SWR) 75mm bore bend any radius complete all as specified and directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

S&F work for UPVC (SWR) 110mm bore bend any radius complete all as specified and directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

S&F work for single socketed UPVC (SWR) pipe Type "B" 75mm bore with rubber ring joint any radius complete all as specified and directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

S&F work for single socketed UPVC (SWR) pipe Type "B" 110mm bore with rubber ring joint any radius complete all as specified and directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

S&F work for single socketed UPVC (SWR) pipe Type "B" 160mm bore with rubber ring joint any radius complete all as specified and directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

S & F work for Stack clamps out of 50mm by 5mm flat iron and 16mm dia round iron stays including bolts and nuts and securing ends of stays to wall or roof Bore in pipe in 75mm to 150mm complete all as specified and directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

M&L work for diameter of outlet 75mm CI floor trap plain with grating including jointing with solvent cement complete all as specified and as directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

M&L work for diameter of outlet 75mm UPVC (SWR) floor trap plain with grating including jointing with solvent cement complete all as specified and as directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

Material and Labour Cutting into existing manholes for connecting new drains, making good to pipe and rendering, cutting out existing benching for and forming branch channel (1/2 round or 3/4 round section) in cement concrete 1:2:4 type B1, smooth finished and reforming benching as required for 150 mm bore of pipe complete all as specifieed and directed.

Lifting of cover and desilting of blocked manhole of any size and depth by mechanised suction machine and removal of sludges in water sealed container to a distance outside residential area and washing with adequate quantity of water and refixing the cover in the same location and cutting of bushes all around the manholes up to 1.0 m radius including burying the sludge in a pit spreading bleeching powder with sufficient quantity surrounding it and sealing the pit with fine sand and spreading bleeching powder surrounding the pit etc complete all as specified and as directed by Engr-in-Charge. Note:- (i) Cost of earth work in excavation required for digging the borrow pit and burrying the the waste materials / sludge in the borrow pit and sealing the pit with fine sand & spreading bleeching powder shall deemed to be included in the rate quoted. (ii) Any damged done by the Contractor during cleaning shall be make good by the Contractor at his own cost upto the satisfaction of Enginner-in-Charge.

Cleaning of blocked kitchen trap / nahani trap /gully trap/ Water closet of any type / pattern upto 1st manhole and making the drain channel fully functional by flushing with sufficient quantity of water to entire satisfaction of Engineer-in-Charge including cleaning up to 1st manhole and removing the waste materials / sludge etc to a distance outside residential area and burying the same in a pit and spreading bleeching powder surrounding the area with sufficient quantiuty complete all as specified and as directed. Note:- (i) Cost of earth work in excavation required for digging the borrow pit and burrying the the waste materials / sludge in the borrow pit and sealing the pit with fine sand shall deemed to be included in the rate quited. (ii) Any damged done by the Contractor during cleaning shall be make good by the Contractor at his own cost upto the satisfaction of Enginner-in-Charge. (iii) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

Taking out inspection door from Soil/waste pipe band/tee 'Y' junction and removing blockage materials from it for cleaning of blockage and finally re-fixing the door complete all as specified and as directed Note:- (i) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

Cleaning of soil / waste pipe/ vent/ Sewer line of any dia by rodding or with bamboo split by opening of inspection eye cover including removing and refixing inspection eye door cover in existing position etc. complete all as specified and as directed by Engr-in-Charge. Note:- (i) Once cleaned the pipe lines, the Contractor shall maintain the lines functional upto the date of Completion at his own cost. (ii) Any damged done by the Contractor during cleaning shall be make good by the Contractor at his own cost upto the satisfaction of Enginner-in-Charge. (iii) Unit rate quoted by tenderer shall included for use of all scaffolding, trestles, ladders, cradles etc, hoisting, lowering and protective measures etc up to twelve storeys height of bldgs.

Cleaning and removing all debris / vegetation from RCC roof surfaces of any height and cleaning the mouth of rain water pipe and removal of materials to a distance outside residential area complete all as specified and as directed by Engr-in-Charge.

M/S BISWANATH BHATTACHARJEE

ARJUN DAS VALECHA

AUTO ELECTRICALS

BHARUKA ENTERPRISES

M/S S. K. SARKAR