REPAIR AND MAINTENANCE OF RCC FLOORING AND DRAINS IN PROCESS AREAS OF ALUMINA REFINERY AT NALCO, DAMANJODI

Amount

1.1.2) Removing the excavated materials , debris of any description and other waste materials, spoil including loading into trucks/tractors using baskets by head loads or any other means and transporting by trucks/ tractors up to a distance of 3 km and unloading at the ear marked places inside plant, spreading levelling complete as directed by Engineer-in-charge.

2.8.1) Earth work in excavation in all types of soils other than hard rock in over areas, foundations and for flooring etc. in caustic prone areas as per the direction of Engineer-In-Charge . The work shall include shoring & shuttering wherever required, dressing, ramming the bottom, disposing the surplus earth to nearby low lying areas within a lead of 50m or stacking within 50m for further disposal by any other means.

4.1.3) Providing and laying Cement concrete at all depths below and upto ground level in foundations, fillings, non suspended floors including tamping , curing etc. but excluding shuttering in any shape, position, thickness and finishing the top surface rough or smooth etc all complete.( CEMENT SHALL BE ISSUED FREE OF COST AT NALCO'S STORE) PCC 1:2:4 (1 Cement: 2Coarse sand: 4 20mm stone aggregate)

4.1.8) PCC 1:4:8 (1 Cement:4 Coarse sand:8 40mm stone aggregate)

5.1.2) Providing and laying RCC in pavement, slabs & drains with 20mm & down graded stone aggregate (excluding the cost of reinforcement and shuttering ) in process units/ areas including curing, vibrating etc. & finishing the top with 30mm concrete of same grade with 12 mm &down graded stone aggregate and finishing the top to proper shape and level etc. all complete as per direction of Engineer-In-Charge.(Cement and Fly Ash shall be issued free of cost from Nalco store or any other point defined by Nalco) RCC grade 1:1.5:3 ( 1 Cement : 1.5 sand: 3 stone aggregate)

RCC grade 1:1.5:3 ( 1 Cement : 1.5 sand: 3 stone aggregate) with fly ash as part replacement of 20% by weight of Cement.

5.9.1) Centring and shuttering including strutting,proping etc. and removal of form work for foundations, footing, columns, suspended floors, roofs, landings, shelves, lintels, beams, chajjas, girders, bressumers, cantilevers, pillars, posts, struts and stair cases and all types of RCC work at all heights in any floors as directed by EIC. Work above/below plinth level upto all depths, shapes and sizes.

5.22.4) Bending/binding and placing in position high yield deformed bars reinforcement confirming to IS 1139 or cold twisted deformed bars reinforcement confirming to IS 1786 for RCC Work at all height and depths, taking the same from store issue points to site of work, straightening, bending to required shape and lenghts as per details, including supplying and binding contractors own soft annealed binding wire and placing with proper cover blocks, supports, chairs, spacers and return of unused /scrap/unserviceable steel to owners storage point etc all complete. (REINFORCMENT STEEL SHALL BE ISSUED FREE OF COST AT NALCO STORES)

5.22.4) Bending/binding and placing in position high yield deformed bars reinforcement for RCC Work at all height and depths, taking the same from dismantled RCC work, straightening, bending to required shape and lenghts as per details, including supplying and binding contractors own soft annealed binding wire and placing with proper cover blocks, supports, chairs, spacers and return of unused /scrap/unserviceable steel to owners storage point etc all complete. (REINFORCMENT STEEL SHALL BE REUSED, GENERATED FROM DISMANTLED RCC WORK)

5.27) Providing and filling in position bitumen mix filler of Proportion 80 kg of hot bitumen, 1 kg. of cement and 0.25 cubicmetre of coarse sand for expansion joints.(per cm depth per cm width per 100 m)( Bitumen & Cement shall be issued free of cost at Nalco store)

Providing 20mm wide expansion joints in floors and pavement slabs around foundations,columns, pedestals etc upto a depth of 200mm and 20mm thick, filling the top 25mm depth with bitumastic sealing compound over a coat of bitumen primer to make the expansion joint leakproof including all shuttering etc. all complete as per the instruction of EIC. BITUMASTIC SEALING COMPOUND AND BITUMASTIC PRIMER SHALL BE SUPPLIED BY NALCO FREE OF COST AT NALCO'S STORE)

6.1.2) Laying brick masonary with approved fly ash brick with cement motar 1:6 ( 1 cement : 6 coarse sand) including curing all complete as per the direction of Engineer-in-charge. (Cement and Fly Ash brick shall be issued free of cost from Nalco stores or any other point defined by Nalco)

7.1.1) Random rubble masonry with hard stone in foundation and plinth including levelling up with cement concrete 1:6:12 (1 cement : 6 coarse sand : 12 graded stone aggregate 20 mm nominal size) upto plinth level with : Cement mortar 1:6 (1 cement : 6 coarse sand)

16.11) Providing & supplying stone soling base layer of flooring with stone of different thickness as site conditions,hand packing closely the boulders/spolls etc. filling the interstices with fine aggregate like sand/crusher dust,consolidating with hand rammer, watering to proper slope and level etc. all complete as per the instruction of EIC.(STONE BOULDERS AND FILLERS WILL BE SUPPLIED BY CONTRACTOR ONLY)

16.73) Providing and making stone soling of any shape and size with available stone by hand packing closely ansd interstices filled with small stone pieces and sand/ crusher dust , ramming, consolidating etc. for floor/pavement etc all complete as per direction of Engineer-In-Charge.

13.5.2) Providing and laying 15mm thick cement plaster in cement mortar 1:6 ( 1 cement : 6 sand ) on the rough sides of single or half brick wall or masonary work using approved type of sand including curing etc all complete for all height.(Cement shall be issued free of cost from Nalco store)

15.2.1) Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge.

15.3.0) Dismantling of RCC in floor /pavement /drain etc. using pneumatric breaker or anyother mechanical means or manual means including taking out the steel reinforcement, cleaning and removal of debris upto a lead of 100 mtr as directed by EIC etc all complete.SUITABLE COMPRESSED AIR POINT NEAR WORK SITE FOR THE BREAKER SHALL BE MADE AVAILBLE

15.7.4) Demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge IN Cement Mortor

15.9.2) Demolishing stone rubble masonry (In cement mortar) manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge :

15.17.2) Dismantling steel work in single sections including dismembering and stacking within 50 metres lead in ,Channels, angles,tees and flats.

10.1) Fabrication and erection in position of MS Plate lining using MS Plate of thickness varying from 3 to 5 mm for providing a steel lining on the process drains with suitable lugs/ angles as per drawing. The fabricated steel lining has to be kept in position before concreting.(REQUIRED MS PLATE/STEEL SHALL BE ISSUED FREE OF COST AT NALCO'S STORE).

M/S RAHUL CONSTRUCTION (BID ID -3080899)

M/S AMULYA CONSTRUCTION (BID ID -3080197)

S K ENGINEERING WORKS (BID ID -3080541)