Indian Institute Of Technology Tender

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Indian Institute Of Technology - IIT Tender

Works
Civil And Construction
Civil Works Others
Eprocure
Opening Date10 Oct 2024
Closing Date24 Oct 2024
Tender Amount₹ 1,04,11,239 
Notes
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Costs

Description

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Documents
Waterproofing treatment, Structural repair and other miscellaneous work of the roof slab and inside of Dogra Hall in the academic area at IIT Delhi.
Price to be Quoted is Given .xls Format.
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BOQ Items

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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 1:4:8 or leaner mix (including equivalent design mix)

225

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Dismantling stone slab flooring laid in cement mortar including stacking of serviceable material and disposal of unserviceable material within 50 metres lead.

1400

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Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

450

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Chipping of unsound/weak concrete material from slabs, beams, columns etc. with manual Chisel and/ or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts all complete as per direction of Engineer-In-Charge

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50 mm average thickness

200

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25 mm average thickness

1200

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Cleaning of reinforcement from rust from the reinforcing bars to give it a total rust free steel surface by using alkaline chemical rust remover of approved make with paint brush and removing loose particles after 24 hours of its application with wire brush and thoroughly washing with water and allowing it to dry, all complete as per direction of Engineer-In-Charge.

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Bars upto 12 mm diameter

3000

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Bars above 12 mm diameter

1000

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Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC as per specifications and direction of Engineer- In-charge complete in all respect.

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Epoxy bonding adhesive having coverage 2.20 sqm/kg of approved make

1400

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Providing, erecting, maintaining and removing temporary protective screens made out of specified fabric with all necessary fixing arrangement to ensure that it remains in position for the work duration as required by the Engineer-in-charge.

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Wooven PVC cloth

1465

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Providing and inserting 12 mm dia galvanised steel injection nipple in honey comb area and along crack line including drilling of holes of required diametre (20 mm to 30 mm) up to depth from 30 mm to 80 mm at required spacing and making the hole & crack dust free by blowing compressed air, sealing the distance between injection nipple with adhesive chemical of approved make and allow it to cure complete as per direction of Engineer- In-Charge.

3880

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Providing and laying anticorrosive Treatment of Reinforcement by any approved make rebar corrosion protection system to existing reinforcement (The application shall be by brush). Process is to be complete as per the recommendation of manufacturer and direction of Engineer-in-charge. for payment exposed length of reinforcement will be measured. (Product - NITOZINC PRIMER of FOSROC / Sika Top-Armatec-108 Plus)/ MasterEmaco P 130 of BASF or equivalent of pidilite & Krishna Conchem).

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Bars Upto 12 mm diameter

4000

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Providing mixing & applying pre-batched one component polymer modified dual shrinkage compensated thixotropic cementious patch repair mortar as per the manufacturer specifications and as per the direction the Engineer-in-charge. The comperessive strength of polymer modified mortar shall be ≥ 45 Mpa (28 Days) according to ASTM C109. ( Product :- Renderock S2 of Fosroc/ SikaTop® 122 HS of Sika / MasterEmaco S 348 of BASF or equivalent of Pidilite)

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For 20 mm thickness over slab, beams, columns and stair case slabs

1400

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Providing and injecting cement Grout with Crystalline admixture to Waterproofing treatment to concrete structures (and any other concrete requiring waterproofing treatment) by adding crystalline admixture to make concrete watertight and durable - as per Type B protection specified in BS 8102:2009 standard. (Make - Penetron, Kryton & Xypex) (The payment shall be made on the basis of actual weight of approved grout injected.)

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Supply & supervision of PRAH based Catalytic integral Crystalline waterproofing treatment to the entire quantity of the concrete of Grade slab/raft /retaining walls and footing/foundations as well as tunnel linings, shotcrete, etc by using Crystalline Admix @ 0.8 to 1.0 % by weight of total cementitious contents of the concrete. Crystalline Admix qualifies as PRAH grade (permeablity Reducing Admixture for Hydrostatic conditions) as specified in ACI-212-3R-2010 i.e is  capable of reducing permeability of concrete by more than 90%, compared with control concrete as per DIN 1048 part 5 (after applying 4 cycles of hydrostatic pressure) and permeablity co-efficient calculated as per valenta / darcy's formula & is resistant to 16 bar hydrostatic pressure. "Crystalline admixture" is capable of self-healing of cracks up to a width of 0.50mm. Drainage system to be designed for drainage of water.

1836

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Providing & applying of terrace waterproofing with Penetron Coating CRYSTALLINE WATERPROOFING COATING Surface Preparation: Cleaning of surface to make it free from dust/dirt/laitance etc. by manual and mechanical means whichever required. Using hard wire brush/grinder to scrape of excess materials from the slab and removing that prior to application of waterproofing coating. Blower/ dryer shall be used to make surface fit for further application wherever necessary.

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Application of Waterproofing • Mixing Thoroughly mechanically mixed with clean water to a creamy consistency or resembling thick oil. Mix only as much material as can be used within 20 minutes and stir mixture frequently. If the mixture starts to set, do not add more water; simply re-stir to restore workability. Mixing ratios: For Horizontal surfaces 3 parts Crystline water proofing Compound to 1 part water. Total 2 coat is required. Seals hairline and shrinkage cracks up to 1/51” (0.5 mm), Non-toxic (NSF/ANSI 61 certified for potable water applications) • Apply first coat at cleaned surface using a brush or roller maintaining the prescribed consumption to ensure uniform coating thickness. • Apply the second coat as the first coat and in perpendicular direction to prevent any untreated/uncoated areas. Allow to dry for 6-8 hours. Consumption- 1.4 to 1.70 kg/sqm for Two coats. (Make - Penetron, Kryton & Xypex)

1400

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Crack / Honeycomb surface will be chipped out and cleaned and should be saturated before repairing with pre-batched one-component crystalline based mortar. mortar as per the manufacturer specifications and as per the direction of the Engineer-in-charge. The compressive strength of crystalline based mortar. shall be ≥ 45 Mpa (28 Days) which is an R4 category mortar as per EN 1504-3, (Make - Penetron, Kryton & Xypex)

100

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40 mm thick rubbed stone flooring over 20 mm (average) thick base of cement mortar 1:4 (1 cement : 4 coarse sand) with joints 3 mm thick, side buttered with cement mortar 1:2 (1 cement : 2 stone dust) admixed with pigment to match the shade of stone and pointing with same mortar. ( Note:- Integral crystalline admixture @ 1% weight of cement in cement mortar will be used)

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White sand stone

1400

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