Tender For Provision Of Pu Water Proofing Treatment In Lieu Of Existing App Water Proofing Membrane At Bldg No P-66 (Mmg Store Complex-Ifa) Building In Technical Area At Cvrde Avadi, Avadi-Tamil Nadu
TDR : 55354573
Tender Notice
Corrigendum Details
BOQ
Expired
Avadi
Tamil Nadu
Corrigendum : Tender For Provision Of Pu Water Proofing Treatment In Lieu Of Existing App Water Proofing Membrane At Bldg No P-66 (Mmg Store Complex-Ifa) Building In Technical Area At Cvrde Avadi
Name of Work:- Provision of PU Water Proofing Treatment in lieu of existing APP water proofing membrane at Bldg No P-66 (MMG Store Complex-IFA) building in Technical AREA AT CVRDE AVADI
Sl. No.
Item Description
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Demolishing cement concrete (unreinforced) in manually/by mechanical means including removal of old tar felt, plastering, concrete mugs, tiles, tree roots etc to disposal of material within 500 metres lead complete all as specified and directed by Engineer - in - charge.
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Demolishing R.C.C. work manually or by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead complete all as specified and directed by Engineer - in - charge.
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Material and Labour for laying cement concrete 1:2:4 (1 Cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources) with water proofing compound @ 2% of cement weight complete all as specified and directed. (WPC will be measured separately) complete all as specified and directed by Engineer - in - charge.
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Supply only integral water proofing compound complete all as specified and directed by Engineer - in - charge.
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Disconnecting existing tanks of capacity exc 250 but n.exc 500 ltrs, setting aside (or lowering if required) for repairs, cleaning, etc. and hoisting if required reconnecting and re-fixing in position. (Cleaning repairing, etc. measured separately) complete all as specified and directed by Engineer - in - charge.
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Disconnecting existing tanks of capacity exc 500 but n.exc 1000 ltrs, setting aside (or lowering if required) for repairs, cleaning, etc. and hoisting if required reconnecting and re-fixing in position. (Cleaning repairing, etc. measured separately) complete all as specified and directed by Engineer - in - charge.
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Material and Labour for water proofing treatment with water base polyurethane modified dispersion shall be carried out all as specified as under: -(a) Mechanical cleaning of surface to make it free from any bituminous residue / dirt. Oil and grease etc all as directed by GE / Engineer-in-Charge.(b) Cracks treatment by cutting open cracks and cleaning it from dirt loose materials etc and filling with polyurethane based sealant with and including application of PU based primer all as directed by GE / Engineer-in-Charge.(c) Applying water based polyurethane modified dispersion (single component cold applied, non toxic, VOC complaint) in 03 coats including 01 coat of primer of same material after dilution of water at 50% or specific primer matching same material as per manufacturer specification and as directed by GE / Engineer-in-Charge.Properties of polyurethane based chemical shall be as follows: (i) Highly elastic(ii) UV resistance(iii) Adhesion to concrete > 1N/Sqmm.(iv) Tensile strength - not less than 2.0N/Sq.mm for free film.(v) Elongation - not less than 300%.(vi) Solid content by weight - not less than 60%.
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(vii) Air / water permeability BSEN 12390 at 5 bar - 72 hours should be NIL and minimum dry film thickness of water proofing membrane must be 1.0mm.(viii) Accelerated weathering (ASTM 453): Pass 1000 hours.(ix) Reaction to fire - non inflammable.Note: (i) To be applied by the manufacturer's authorized applicator only. Contractor has to provide manufacturer's test certificate for the above mentioned technical parameters and purchase Vouchers.(ii) Removal of existing treatment to be paid separately.(iii) Roof top to be ensured to avoid water ponding.(iv) For accessible terrace and inaccessible terrace, 300mm height of vertical surface / parapet wall to be treated with same specification of slab. Please Enable Macros to View BoQ information
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