CLEANING AND REPAIR OF SEWAGE LINES, MANHOLES, SEPTIC TANK, SOAKAGE PIT AND MISC REPAIR WORKS ETC AT OLD OFFRS, CIVILIAN OFFRS AND KP QTRS OF SEVOKE ROAD UNDER GE SEVOKE ROAD

Amount

Cleaning of AC/CI pipes vertical or horizontal sewage line of any bore (from first floor to ground floor/ground floor to inspection chamber) by rodding thoroughly and removal of blockage by opening inspection chamber and flushing with water after cleaning complete as specified and as directed.(Cleaning of inspection chamber shall be measured and paid separately).

De-sludging, Cleaning and dewatering of sludge(liquid) from septic tank through pumping set or other mechanical means including cleaning of sludge/grass/bushes and disposing off sludge in the excavated pit as directed by Engineer-in-Charge including spreading bleaching powder and filling of pit by earth complete as specified and as directed by Engineer-in-Charge. Note :- (i) Earth to be filled over the pit shall be filled after sufficient absorption of liquid and size of pit shall be made accordingly. (ii) To avoid any health hazard or spreading of any foul gas, bleaching powder shall be spread as directed by the Engineer-in-charge. Cost of spreading bleaching powder and excavating the earth pit and filling of earth etc shall be deemed to be included in the rate quoted under this item but supply of bleaching powder shall be measured and paid separately.

De-sludging/cleaning completely of solid sludge by pumping and or manually from inside the septic tank and removal of sludge to a distance as directed by Engineer-in-Charge and depositing the sludge in a excavated pit of appropriate size as directed duly filled up with earth in layers of 30 cm thick including spreading bleaching powder and taking out RCC manhole cover slab for cleaning and resetting in CM 1:6 after cleaning complete as specified and as directed. Note :- (i) Earth to be filled over the pit shall be filled after sufficient absorption of liquid and size of pit shall be made accordingly. (ii) To avoid any health hazard or spreading of any foul gas, bleaching powder shall be spread as directed by the Engineer-in-charge. Cost of spreading bleaching powder and excavating the earth pit and filling of earth etc shall be deemed to be included in the rate quoted under this item but supply of bleaching powder shall be measured and paid separately.

Cleaning of sewage drain pipe of stone ware pipe, RCC Hume pipe , cast iron pipe of 75 mm bore by rodding with sectional sewer rod/flexible sewer rod/bucket etc thoroughly from inspection chamber to man hole or from one manhole to another manhole of any depth and size and well flushing with water after cleaning including removal of sludge and other materials obtained from cleaning the drain pipe and manhole garbage to a pit made for this purpose and filling up the earth complete as specified and as directed. Note :-(i) Cleaning of sewage line to be started from down stream side in this operation for which some pipe line gets cleaned automatically which needs to be cleaned by rodding only and hence the same shall not be measured (ii) The unit rate of the items shall be deemed to be included for the cost of removal of sludge/waste and water accumulated in manhole/inspection chamber due to cleaning of drain by rodding etc. (iii) The sludge obtained shall be deposited in an excavated pit and filled up with earth in layers of 30cm thick as directed by Engineer-in-Charge. Cost of spreading bleaching powder and excavating the earth pit and filling of earth etc. shall be included in the rate quoted under this item but supplying of bleaching powder shall be measured and paid separately. (iv) To avoid any health hazard or spreading of any foul gas bleaching powder shall be spread over each earth layers as directed by Engr-in-Charge.

All as per item No. 4 above but bore of pipe 100mm

All as per item No 4 above but bore of pipe 150mm

All as per item No. 4 above but bore of pipe 200mm

Cleaning of inspection chamber/gully trap including flushing with water or pumping air all as directed.

Cleaning of manhole any size and any depth complete including flushing water or pumping air complete as specified and as directed.

Excavation in trenches n.exc 1.5 m wide and n.exc 1.5m depth for for foundations, pipes, manholes, etc etc, or for shafts, wells, cesspits, manholes, pier holes, etc and not exceeding 10 square meter on plan for manholes etc and getting out in soft/loose soil complete as specified and as directed.

Demolition and breaking up drain pipes 200 mm (Salt glazed stone ware, AC or reinforced concrete) set in cement mortar and removing from site of work to a distance n.exc 100 meter complete as specified and as directed.

All as per above item no 11.00 but 150 mm bore pipes

All as per above item no 11.00 but 100 mm bore pipes

Materials and Labour for plain cement concrete (1:3:6) type C-2, using 20mm graded stone aggregate as in surface channel and drain surface to be finished even and smooth without using extra cement complete all as specified and as directed.

Material and labour for 75 mm thick PCC 1:3:6 type C-2 (using 40mm graded mechanically crushed stone aggregate) as in plinth protection/footpath, surface to be finished even and smooth without using extra cement laid in alternate bays and joint to be filled with bitumen filler complete all as spd.

Material and labour for PCC (1:3:6) type C2 (using 40mm graded crushed stone aggregate) as in bed for drain pipes including packing under and haunching against the sides of pipes after they are laid and tested for 300 mm bore pipe complete as specified and as directed.

All as per above item no 16.00 but for 200 mm bore pipe.

All as per above item no 16.00 but for 150 mm bore pipe.

All as per above item no 16.00 but for 100 mm bore pipe.

Material and labour for 300 mm nominal dia DWCPE pipe (SN-8) pipes ISI marked laid in trenches and joined complete all as specified and directed

All as per above item no 20 but 200 mm bore.

All as per above item no 20 but 150 mm bore.

All as per above item no 20 but 100 mm bore.

Materials and Labour for 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. all as specified and as directed.

Demolition of brick work built in cement mortar including all quoins arches, pillars etc but excluding ashlars facings, dressed stone work & precast concrete articles, separating and cleaning serviceable bricks for reuse, removing unserviceable portion/debrish from site complete as specified and as directed.

Material and labour for brick work with sub class 'B' bricks old size full brick, straight or curved on plan exceeding 6m mean radius built in CM (1:4) complete all as specified and directed.

All as per above item no 26 but except bricks. ( old serviceable bricks obtained from demolition shall be used)

Material and labour for Brick work with sub class B bricks, straight or curved on plan to any radius in half brick thick walls built CM(1:4) complete all as specified and directed.

Material and labour for PCC 1:4:8 type, D-2 (using 40 mm graded crushed stone aggregate) as in foundation filling and mass concrete complete as specified and directed.

Material and labour for rendering 15 mm thick in cement mortar (1:6) on other than fair face of brick wall and finished even and smooth without using extra cement complete as specified and directed. Note : WPC shall be measured separately.

Supply only integral water proofing compound complete all as specified and as directed.

Material and labour for rendering 15 mm thick in cement mortar (1:6) on fair face of brick wall and finished even and smooth without using extra cement complete as specified and directed. Note : WPC shall be measured separately.

Removal of surplus soil to a distance not exceeding 60m and depositing where directed at a level n.exc 1.5m above the starting point complete as specified and as directed.

Returning, filling in foundation including spreading levelling, watering and well ramming in layers not exceeding 25 cm depth complete as specified and as directed.

Demolition of cement concrete (reinforced) as in cover slabs, culverts etc of any description and in any position not other wise specifically provided for complete as specified and as directed.

Material and labour for precast RCC 1:2:4, type B1 (using 20 mm graded crushed stone aggregate) as in cover slab and set in cm 1:6 including necessary form work and moulds complete as specified and as directed.

Supply only bleaching powder having chlorine contents minimum 30% ISI marked of approved quality complete as specified and directed.

Materials and Labour for TMT bars 6 to 8 mm dia , as reinforcement for concrete cut to length, bent to shape required including cranking, bending, spirally hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.90mm dia, complete all as specified and directed.

Taking down eaves gutters and rainwater pipes (any size or pattern), including all fittings, heads, shoes, bends, swan-necks etc including cleaning or refixing or removal to store (measured overall as fixed along the centre line over fittings and accessories)

Supply and fixing 110 mm bore PVC (SWR) Soil, waste and vent pipes single socketed in any length with rubber ring joints fixed to walls complete all as specified & directed.

Supply and fixing 110 mm bore PVC (SWR) bends with/without door of any radius complete all as specified & directed.

Supply and fixing 110 mm bore PVC (SWR) branch piece single (Single `Y') equal or unequal with access door complete all as specified & directed.

Supply and fixing 110 mm bore PVC (SWR) junction single (Single `T') equal or unequal with access door complete all as specified & directed.

Supply and fixing 110 mm bore PVC (SWR) junction double (Double `T') equal or unequal with access door complete all as specified & directed.

Supply and fixing 110 mm bore PVC (SWR) Vent cowl complete all as specified & directed

Supply and fixing 75 mm bore PVC (SWR) Soil, waste and vent pipes single socketed in any length with rubber ring joints fixed to walls complete all as specified & directed.

Supply and fixing 75 mm bore PVC (SWR) bends of any radius complete all as specified & directed.

Supply and fixing 75 mm bore PVC (SWR) branch piece single (Single `Y') equal or unequal with access door complete all as specified & directed.

Supply and fixing 75 mm bore PVC (SWR) junction single (Single `T') equal or unequal with access door complete all as specified & directed.

Supply and fixing 75 mm bore PVC (SWR) junction double (Double `T') equal or unequal with access door complete all as specified & directed.

Supply and fixing 75 mm bore PVC (SWR) Vent cowl complete all as specified & directed

Material and labour for PCC 1:2:4 type B-0 with (using 12.5mm graded aggregate) as in benching, coping fillets etc including necessary form work where ever required all complete as specified and as directed.

Material and labour for PCC 1:4:8 type D-2 (using 40mm graded mechanically crushed stone aggregate) as sub base of flooring 75mm thick all as specified.

Material and labour chequered cement concrete tiles 30cmx30cmx25mm thick with grey cement and pigment set jointed and pointed in neat cement slurry in floors over and including 20 mm thick cement mortar screed bed in CM 1:6 complete all as specified and directed.

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

Demolition of cement concrete over ground floors and paving exc. 15 cm thick unreinforced complete all as specified and directed

Material and labour hardcore of broken stone or boulders of gauge not exceeding 63 mm deposited, spread and levelled in layers not exceeding 15cm thick, watered and rammed to a true surface complete all as specified and directed.

Material and labour for PCC 1:3:6 type C-2 (using 40mm graded mechanically crushed stone aggregate) 50 mm thick as in hardstanding/footpath, surface to be finished even and fair including laid in alternate bays complete all as specified and directed.

Material and labour Machine pressed precast concrete interlocking paver block with grey cement and pigment of any shape and size conforming to IS-15658-2006 of 60mm thick, M-35 Grade complete all as specified and directed

Material and labour for Sand cushioning under floors or interlocking paver block including watering and consolidation complete all as specified and directed.

Material and labour for Preparation of newly plastered wall surfaces and applying three coats of white washing complete all as specified and directed.

SRI SURAJIT SENGUPTA (BID ID -3076804)

MARWA CONSTRUCTION (BID ID -3074840)

Raj Enterprise (BID ID -3074043)

M/S L N CHOWDHURY (BID ID -3073609)