Special Repair, Retrofitting and Water tightness of different government quarters at Rabindrapally, Gandhighat and Melarmath including the VIP quarters at SPM lane, Agartala, Tripura

Demolishing cement concrete manually / by mechanical means including disposal of material with all lifts and upto 50 m lead etc. complete as per direction of the Engineer- in-charge: Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

Providing and laying Micro-concrete cement based prepacked single component, chloride free, sulphate free, non-shrink, free flow, self compacting, ready to use after mixing water in specified proportion of approved quality. Rate shall not be included with new plywood shuttering board cost and supporting jack system/prob to support the shuttering plate. Micro-concrete for placing in nominal thickness of 25mm to 200mm for concrete repair with Compressive strength (ASTM C109,7cm cube) of 35 MPa at 28 Days. or Equivalent Product MASTEREMACO S466 (BASF)/ SikaRep Microcrete-4 (SIKA)

Centering shuttering including struttings, propping etc. and removal of form work for: Suspended floors, roofs, landings, balconies and access platform with 12 mm thick shuttering ply

Providing and fixing double scaffolding system (cup locktype)ontheexteriorside,uptosevenstoryheight madewith40mmdiaM.S. tube1.5mcentretocentre, horizontal &vertical tubes joiningwith cup& lock systemwithM.S. tubes,M.S. tubechallies,M.S. clamps andM.S.staircasesysteminthescaffoldingforworking platform etc. and maintaining it in a serviceable condition for the requireddurationas approvedand removingitthereafter.Thescaffoldingsystemshallbe stiffenedwithbracings, runners, connectionwith the buildingetcwhereverrequiredfor inspectionofwork at requiredlocationswithessential safetyfeaturesfor the workmen etc. complete as per directions and approval ofEngineerin-charge .Theelevational areaof thescaffoldingshallbemeasuredforpaymentpurpose .The payment will be made once irrespective of duration of scaffolding. Note:- This itemto be used formaintenancework judicially, necessarydeduction for scaffolding in the existing item to be done.

Removal of existing water proofing system upto any thick max upto 20 to 400mm and disposing the debris upto a max. lead of 1km from site to stocking ground incl. cost of labour, tools, tackles, equipments etc. complete all including removal of debris

Providing and fixing shear connectors, fixing with epoxy as per manufactures specification, drilling 10mm dia hole upto a depth of 100mm, cleaning the holes with blowers etc. and fixing connectors with 8mm steel upto a length of 150mm to 300mm depending upon the requirement including cutting and bending with labour, equipment, machinary etc. complete wherever required.

Surface preparation by overlay method grade not less than M25, with required high performance PCE based super plasticizer, Integral water proofing compounds, Syntactic fibre at 125 gm per bag of cement, under a base coat layer of Micro concrete grade not less than M40, by Vacuum De-watering system, finishing with mechanical towelling, suction Mat shall be multilayered polymer sheets to ensure sufficient cross sectional area to squeeze out and remove excess water from the concrete, double beam surface vibrator shall be used, all including fixing levels with heavy grade channels etc complete, including grove cutting the surface afterward finishing with trowel etc complete excluding the cost of centering shuttering, shear connectors etc complete , surface hardness shall be checked by rebound hammer tester.

Providing and applying PU coating ( Polyurethane) by spray etc complete as per manufacture specification minimum PU at the rate 0.700 kg/ Sqm etc complete the substrate should be checked for < 4% pbw moisture content, Relative Air Humidity 85% r. h. max, the mixing must be thoroughly mixed using a low speed electric stirrer (300 - 400 rpm) or other suitable equipment, if applied by roller then roller shall be With a solvent resistant, “non-fuzzy” roller, or if applied by spray then spray shall be Airless spray equipment, for example: piston pump Wagner EP 3000. (pressure: ~ 200 - 250 bar, nozzle: 0.38mm - 0.53mm, angle: ca. 50 - 80°) including materials , skilled applicator, labours , tools tackles etc complete (The product performance shall be guranteed for ten year from the date of application) Two component, composite water based silicone impregnateing solution with Nano mechanism, which impart water repellency at 100% for mineral construction materials, with UV resistance, barrier against chloride ions, carbon dioxide and water, it can be Siloxane Silicone modified two-component waterborne polyurethane was synthesized by the reaction between siloxane-modified hydroxyl-functional polyurethane aqueous dispersion and the hydrophilic-modified polyisocyanate, or with any such equal composite mechanism, with a NANO mechanism, so that, the process of impregnateing and surface protection shall be ensured.Two process waterproofing system Component "A" as base application - Impregnateing solution with low vicious, which should provides 100% water repellency Component "B" as top application-Protection to treated surface with UV resistance, barrier against chloride ions, carbon dioxide and water, with excellent bond strength, etc. Measurement shall be in lenghth and breath

Providing and placing in position Micro Concrete, which shall be cement based pre-packed single component chloride free, non-shrink , free flow, self compacting ready to use after mixing water in specified proportion obtained from approved manufacturer as per specification upto Grade not less than M40 for column, beam, slab etc. wherever required including mixing with paddle fitted low RPM machine, including materials, Aggregate, labours etc. complete.

Reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete above plinth level.

Removal of existing plaster on external, internal walls, towers upto any thick wherever found required including deep raking the joints , providing suitable treatment to remove the formation of alkali salts rinsing with hot water or by chemical wash (if required) without eroding the brick surface etc. complete including materials, chemicals, cost of labour, tools and tackles complete including wetting/damping or drying the wall etc. complete and disposal of debris etc complete

15 mm Cement Plastering including cement punning double layer including cost of materials required and finishing even and smooth, curing complete in cement mortar 1:4 (1 Cement: 4 Sand) including Poly propylene fibre at the rate of 800 gms per cum. of cement & admixture at the rate of 150 ml per bag of cemen

Finishing walls with textured exterior paint of required shade of approved brand and manufacture [Payment shall be made after submission of Test Certificate issued by the Manufacturer] : New work ( two or more coats applied @ 3.28 litre/10 sqm) over and including priming coat of exterior primer applied @ 2.20 kg/10 sqm

Disposal of moorum/building rubbish/ malba/ similar unserviceable, dismantled or waste material by mechanical transport including loading, transporting, unloading to pproved municipal dumping ground for lead upto 10 km for all lifts, complete as per directions of Engineer-in-charge. Note - item to be applicable in urban areas having directions for restricted hours for movement/ plying of load carrying motor vehicle of 3.5 cum or more.

Providing and applying Single componenet Hydrophobic Polyurethane resin, which shall be low Viscos 250 (mPa-s), specific Gravity upto 1.20 (G/ml) or Higher , Tensil Strength Not less than 15N/Mm2 , Tensil Shear Strength Noty less than 7 N/Mm2, Compressive Strength Not less than M50 etc complete including PDP Pump, which shall be High Pressure Gauge fitted pump, electrically operated as per from approved manufacturer as per specification

Providing and inserting 12mm dia galvanised steel injection nipple in honey comb area and along crack line including drilling of holes of required diametre (20mm to 30mm) up to depth from 30mm to 80mm 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 required and as per direction of the Engineer-in-charge.

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