REPAIR CLEANING OF SEWAGE LINES, MANHOLES, SEPTIC TANK, SOAKAGE PIT ETC OF ZONE A AND ZONE B AT SEVOKE MIL STN 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. 4.00 above but bore of pipe 100mm

All as per item No.4.00above but bore of pipe 150mm

All as per item No.4.00 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 pipes, manholes, etc not exceeding 10 sqm on plain and not exceeding 1.5 meter in depth 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

Demolition of cement concrete of any description and position not otherwise specifically provided for.

M&L 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 200 mm bore pipe complete as specified and as directed.

All as per above item no 15.00 but for 150 mm bore pipe.

All as per above item no 15.00 but for 100 mm bore pipe.

M&L for salt glazed stone ware drain pipes 200 mm bore grade 'A' laid in trenches and jointed in cement mortar 1:1 and tested complete as specified and as directed.

All as per above item no 18.00 but 150 mm bore.

All as per above item no 18.00 but 100 mm bore.

Demolition of brick work built in cement mortar including all quoins arches, pillars etc but excluding ashlars facings, dressed stone work & precast concrete articles complete as specified and as directed.

M&L 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 as specified and directed.

M&L 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.

M&L for rendering 15 mm thick in cement mortar (1:6) on other than fair face of brick wall including mixing of W.P.C. and finished even and smooth without using extra cement complete as specified and directed. Note : WPC shall be measured seperately.

M&L 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.

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 leveling, 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 of any description and in any position not other wise specifically provided for complete as specified and as directed.

M&L 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.

M&L for TMT bars 8mm dia as in reinforcement cut to length bent to shape required including cranking, bending spirally for hooping for columns, hooking ends and binding with and including MS wire (annealed not less than 0.9mm dia) complete as specified and as directed.

Supply only WPC of ISI marked

M&L for 75mm thick PCC 1:4:8 type, D-2 (using 40 mm graded crushed stone aggregate) as in sub base finished even and fair to achieve the topping layer of tiles complete as specified and directed.

M&L for chequered cement concrete tiles 25cm x 25 cm x 22 mm thick (with grey cement and pigments), set, jointed and pointed in neat cement slurry in floor with grey cement mixed with pigments to match with the colour of tiles, laid over and including 20 mm thick screeed bed in CM1:4, complete all as specified and directed.

TAPASH SAHA

MARWA CONSTRUCTION

D.D. BROTHERS