Name of Work:- Acid brick work at DCU & tiling work at battery rooms of substations in Digboi Refinery.
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Item Description
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Acid brick work at DCU & tiling work at
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Transportation of various materials by Tractor trolley (2-3 M3 capacity) for following leads or part thereof including loading, unloading such as cement, sand, debris, metal, earth, refractory, insulation, furniture, plants etc. all such materials from one place to another place including battery area and outside battery area all complete as per the direction of the Engineer-in-Charge: Note: Unit of measurement is EACH which stands for 'Per Trip'.
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Upto a lead of 1 km.
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Providing and fixing 10mm thick acid and/or alkali resistant tiles of approved make and colour using acid and/or alkali resisting mortar bedding and joints filled with acid and/or alkali resisting cement as per IS : 4457 complete as per the direction of Engineer-in- Charge:
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In dado/skirting on 12 mm thick mortar 1:4 (1 acid proof cement : 4 coarse sand) - Acid and alkali resistant tile.
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Finishing with Epoxy paint (two or more coats) at all locations prepared and applied as per manufacturer's specifications including appropriate priming coat, preparation of surface, etc. complete:
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On concrete work.
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Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge:
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Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix).
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Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge.
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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:
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In cement mortar.
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Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.
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ACID RESISTANT BRICKS: Providing and fixing acid resistant 75mm thick bricks conforming to IS:4860 of approved make in flooring/ dado/ skirting/ pits etc. The acid resistant bricks shall be laid over one coat of approved quality anti-corrosion priming paint and 10mm thick approved make bitumen mastic layer. The acid resistant bricks shall be fixed with acid proof silicate based mortar (in proportion 3S:1K as per IS:4441) spread on back of bricks and joints (ranging from 4 to 6mm in thickness) shall be raked to a minimum depth of 18mm. The joints shall be flushed with acid resistant Furacin based mortar (in proportion 3 parts Furacin powder :1 part Furacin mortar as per IS:4443) of approved make and curing/ neutralizing of the joints shall be accoplished by Furen resin, all complete as per specifications, relevant IS codes and direction of Engineer-In-Charge.
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