Tender For Refurbishment Works In Existing Dg Building At Frfcf, Kalpakkam; 1 Removing/chipping and cleaning of existing concrete carefully by low impact high frequency hammer without damaging the existing concrete or by control sand blasting including cleaning the surface by air jet etc. complete as per direction and satisfaction of Engineer-in-charge (for payment area of R.C.C member before chipping/ removing loose concrete will be measured). 2 RCC members of average thickness upto 100mm 3 Providing and applying two coats of alkaline rust converting primer of approved quality and make (After its reacting period, cleaning existing reinforcement with wire/ rotary wire brush, making the surfaces free from loose material, dirt etc. complete) on the rebars, including cleaning the reinforcement by wire brushing and washing with clean water to remove loose rust spalls, As per the recommendation of manufacturer complete as per direction of Engineerin-charge. for Payment exposed length of reinforcement will be measured.The material shall be brought from manufacturer in original sealed container.(Alkaline rust converting primer - REEBAKLENS RR of FOSROC / Sika Rustoff 100 of Sika / BASF/ Pidilite/ Krishna Conchem). 4 Bars upto 12 mm Diameter 5 Bars above 12mm diameter 6 Providing and Applying two coats of epoxy based zinc rich anticorrosive Treatment of Reinforcement by any approved make rebar corrosion protection system to existing reinforcement within 24 hours of surface preparation and second coating immediately after drying of first coat(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. The material shall be brought from manufacturer in original sealed container. (Product - NITOZINC PRIMER of FOSROC / Friazinc® R of Sika/ MasterEmaco P 130 of BASF or equivalent of pidilite & Krishna Conchem). 7 Bars upto 12 mm Diameter 8 Bars above 12mm diameter 9 Providing , mixing & applying two component Epoxy resin concrete Bonding coat on prepared RCC surface as per manufacture specification including prepartion of surface by chipping and throughly cleaning of surface complete wherever required and as per direction ofngineer-in-charge.Epoxy material should be conforming to A S T M-881-887 Type 1,Grade 1, class B or C.The material shall be brought from manufacturer in original sealed container.(Product: MasterBrace1414 of BASF/Sikadur 32LP OF SIKA/Nitobond EP Of fosroc or equivalent of pidilite). NOTE: The new concrete/plastering shall be placed to the coated substrate, when it is in a tacky state. 10 Rebaring/ fixing of shear connectors of new reinforcement bars for structural connections in RCC columns including power drilling holes of appropriate diameter in reinforced or plain cement concrete upto standard depth or as per specification of manufacturer, fixing the reinforcement in position using epoxy resin based anchoring adhesives of approved make at all height level. ( Rate shall include cost of labour, T & P for power drilling in concrete, epoxy catridges, testing as per manufacturer receommendation, plastic nozzle etc. complete including the drilling holes and loose dust by blowing air. Reinforcement for rebar shall be paid extra.) ( Product :- Lockfix of Fosroc/ AnchorFix ® -3+ of Sika/ RE-500 of Hilti/ MasterFlow 935 AN of BASF/Fischer ) 11 a) Rebar 10 mm Dia x 14 mm holes x 100mm depth 12 Providing and laying ready to use non-shrink cementitious free flow micro concrete of Compressive strength ≥ 45 MPa (28 days) and flow≥ 500mm of approved make and manufacture complete as per direction of Engineer-in-charge for replacing the existing concrete and repairing damaged concrete surface after fix the form work across the profile of damaged structural element. Pour the free flow non-shrink Cementitious free flow micro concrete mixedwith water as per manufacturer recommendation in the form work and stirring continously using paddle mixer or other mechanical mixer and consuming within 20 minutes of mixing or as per manufacture recommnedation. 12 mm aggregate around 50% of powder content shall be added during mixing of microconcrete. All repaired concrete surfaces shall be cured for 14 days moist curing.. The material shall be tested as per QAP. Payment shall be made on the basis of consumed dry material of micro concrete mix. (Product :- Renderock RG of Fosroc/ SikaRep® Microcrete -4 of Sika / MasterEmaco S-346 of BASF or equivalent of Pidilite) 13 With addition of 12.5mm aggregate 14 Without addition of aggregate 15 Providing watertight shuttering using plywood of 10mm to 12mm thick with suitable wood runner, joint and with provision for pouring micro concrete.The formwork shall be fixed to lines and dimension to get finished edges and stable to retain the form shape and resist leakage under hydraulic pressures of micro concrete complete all as per specifications and as directed by the Engineer-in-Charge 16 Providing and fixing double Tubular scaffolding system using H-Frames / APS system or (cup lock type) on the exterior side upto seven story height made with 40mm dia M.S. tube 1.5m centre to centre horizontal and vertical tubes joining with cup and lock system with M.S. tubes, M.S. tube challies, M.S clamps and M.S staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it thereafter. The scaffolding system shall be stiffened with bracings, runers, conection with building etc. wherever required for inspection of work at required locations with essential safely features for the workmen etc. complete as per directions and as approved by the Engineer-in-charge. The elevation area of the scaffolding shall be measured for payment purposes. The payment shall be made once irrespective of duration of scaffolding. 17 Providing and laying cast insitu controlled reinforced cement concrete of specified grade at all levels and lifts mentioned below using 20mm maximum size hard granite machine washed crushed graded stone aggregates and washed crushed stone sand containing silt content (size less than 75 micron ) less than 10 % conforming to IS 383 including testings as per QAP, weigh batching, charges for mixing & cost of admixture, mechanical mixing, transporting and placing at all lifts, vibrating, consolidating, 14 days curing and finishing smooth of all exposed faces complete for column footing, columns, lintels, sunshades, gutter slabs, beams, slabs, water tank, machine foundation and all other structural elements including dewatering wherever necessary (Formwork and reinforcement will be paid for separately) all as per specification and all as shown in drawings and as directed by the Engineer-in-charge for all insitu item. Note: 1. The rate of concrete shall include all labour, equipment, charges for mixing & cost of admixture. Polycarboxylate ether (PCE) based chemical admixture confirming to IS 9103 shall be mixed in fresh concrete and prior permission from engineer-in-charge shall be obtained for dosage and compatibility. 2. Test certificate of PPC cement conforming to IS 1489 Part-1, procured from dealer/company to be submitted for all cement related works by the Contractor.3. The rate shall be quoted on the basis of using minimum cement per cu.m. of concrete mentioned below for relevant grade of concrete. Any upward/ downward variation required to obtain the specified strength will be paid for or deducted at the rate of cement specified in Schedule F. 18 M30 grade with 380 kg. of PPC cement per cu.m. of concrete for all floors 19 Supplying and placing Normal N20 grade with minimum cement content 250 kg/cu.m usingPPCgrade with upward variation as per Note below at temperature not exceeding 38ºC with maximum size of aggregate not exceeding 20 mm size hard granite machine crushed graded stone aggregate and crushed stone sand as fine aggregate including weigh batching, chemical admixture, mechanical mixing, transporting, pumping, placing in various sections, for mud mat, foundation, filing in pits,etc., at all level above from unfinished floor level, maintaining required slope, compacting, finishing, curing minimum 10 days, including centring, shuttering, etc,. complete all as per specifications, drawings, as directed by EIC.Rate to include all materials, labour, tools/tackles, plant and equipment, supervisions etc all complete.Note: 1. The rate of concrete shall include all labour, equipment, charges for mixing & cost of admixture. Polycarboxylate ether (PCE) based chemical admixture confirming to IS 9103 shall be mixed in fresh concrete and prior permission from engineer-in-charge shall be obtained for dosage and compatibility2. Test certificate of cement, procured from dealer/company to be submitted for all cement related works by the Contractor.3. The rate shall be quoted on the basis of using minimum cement per cu.m. of concrete mentioned below for relevant grade of concrete. Any upward/ downward variation required to obtain the specified strength will be paid for or deducted at the rate of cement specified in Schedule F. 20 Supplying, fabricating, erecting and fixing in position at all levels, centering and shuttering to correct line and levels including strutting, propping, etc., with necessary bracings in all axes to give a stable assembly with provision for making the joints in the shuttering fully leak proof and with provision for fixing coil nuts with tie rods along with suitable channel for lateral supports and for inserts, projecting dowels, anchor bolts or any other fixture, including staging, access and working platforms etc., all complete as specified and directed including dismantling and removing the aforesaid assembly after the concrete attains the sufficient strength to self-support itself without cracking and distortion all as per specification, including all materials and labour complete in all respects at all lifts. The measurement for the formwork will be the actual area of forms in contact with concrete surfaces. Shuttering with plywood panels alone will be permitted. 21 Providing straightening, decoiling wherever necessary bending, cutting, binding and fixing in position steel reinforcement TMT bars ofFe500DgradesteelconformingtoIS:1786SAIL or VIZAG or JSW or TATA or equivalent andtyingwith approvedannealedbindingwireof1.6mmdiainallreinforced cementconcreteworkatalllifts,includingcostofsupplyingand fixing the spacer/cover blocks of same grade of parent concrete from approved source and binding wire complete all as per specification and as directed by Engineer-in-Charge at all lifts.Note: The rate shall be including the cost and testing of reinforcement steel at thrid party NABL lab. The reinforcement steel will be procured from dealers with a test certificate as approved by the department. For further details please see Clause 11 of Section VIII, General Information for Guidance of Tenderers. 22 Providing and constructing 200mm thick precast concrete solid blocks masonry wall in cement mortar 1:5 with solid concrete blocks of size 400x200x200mm in superstructure including cost of materials, labour charges, scaffolding, curing complete all as per specifications and as directed by the Engineer-in charge. 23 Providing plastering to the external surfaces of Cement plaster 1:4 20 mm thick in two coats under layer 12 mm thick in and a top layer 8 mm thick finished rough with sponge. including hacking of concrete surfaces with pointed tool, scaffolding, finishing, curing, forming grooves wherever necessary, all as per specifications. 24 Providing plastering to the internal surfaces of brickwork / concrete at all elevations in cement mortar 1:5, 12mm thick including hacking of concrete surfaces with pointed tool, scaffolding, finishing, curing, forming grooves wherever necessary, all as per specifications. 25 Providing and applying painting Two coats at all levels including ceiling with Acrylic emulsion paint for Internal (ACE or Equivalent approved brand, colour and manufacturer) to give an even shade including one under coat of suitable primer, applying putty, preparation of the surfaces, scaffolding complete all as per specifications and as directed by the Engineer-in-charge. 26 Providing and applying painting Two coats at all levels including ceiling with Acrylic emulsion paint for External (ACE or Equivalent approved brand, colour and manufacturer) to give an even shade including one under coat of suitable primer,preparation of the surfaces, scaffolding complete all as per specifications and as directed by the Engineer-in-charge. 27 Providing and applying painting Two coats on Structural Steel members and other required internal surface at all levels with Synthetic enamel paint (Asian or approved brand, colour and manufacturer) to give an even shade including preparation of the surfaces, scaffolding complete all as per specifications and as directed by the Engineer-in-Charge.[Note:The samples should be got approved by the EIC before placing.] 28 Repairstointernal/externalplasteringoverbrickwork/concreteatall locationsandallliftsusingPolymermodifiedcementrepairmortarincluding preparingthesurfacebyhackingthesurfaceforbetteradhesion,providing glass fibre mesh or chicken reinforcement, if any required, applying bond coat, filling/plastering with polymer modified repair mortarin layersusing approved polymers, curing, cleaning of floor/windows thoroughly on completion of repair worketc.,allcompleteasdetailedbelowaspermanufacturerspecifications and as directed by the Engineer-in-Charge.a)SurfacePreparation:Preparingthewallsurfacebychippingofunsound/ weak /loose plaster surface mortar with manual Chisel and/ or by mechanical meansatallliftsincludingcutting/trimmingofedgestoprovidefirmvertical faces,makingsquareshouldersofcavities,cleaningtheexposedsurfaceto make surface dust free, disposal of debris within 2 Kmlead.b)BondCoat:ApplyingSBRbasedbondcoatofmakeMCBauchemie (Naufufill-SBR) or FOSROC (Nitobond SBR) or FAB Chemical (Mixbond SBR) or Bostik(Boscocem 475) or Ultratech (Xtracrete).Mixingratioofchemicals, consumption and application shall be as per manufacturer specifications.c)Applicationofrepairmortar:Buildingupwithpolymermodifiedcement repairmortarofratio1:4(1partofcement:4partsofsand)andadding admixturesinrecommendedproportionofmakeMCBauchemie(Naufufill- SBR) or FOSROC (Nitobond SBR) or FAB Chemical (Mixbond SBR) or Bostik (Boscocem 475) orUltratech (Xtracrete).Mixingratioofchemicals, consumptionandapplicationshallbeaspermanufacturerspecifications (minimum 2% by wt. of cement shall be used). 29 20mm average thickness - Plain plaster 30 Providing and laying following Water proofing treatment system including preparation of surface by cleaning by washing thoroughly by mechanical and manual means,making surface free from dirt/oil/ other materilas,removal of loose/cracked mortar joints of weathering tiles,filling the cracks using approved crack fillere, filling/ injections/ grouting the cracks/ joints where ever required with polymer modified cement mortar using admixtures, loose tiles shall be fixed firmly, applying bond coat, applying second coat of two component highly flexible cementitious water proofing coat, applying third and fourth coat of high performance acrylic elastomeric coating, leak test etc.. all complete as per specification and as directed by the Engineer-in-Charge.Note : 5 years Guaranatee period from the date of compeltion of work shall be given by the contractor int he prescribed format of thhe department for the workmanship and materials provided. 31 Providingand fixingPVC rain water downtake pipes conforming to IS: 13592 Type A and PVC SWR Fittings & specials confirming to IS:14735,Finolexorotherapprovedequivalentmakeofpipes, fittings & specials including jointing with seal ring / with PVC solvent adhesiveincludingfixinginwalls/columnsusingclamps,anchor fasteners,boltsandteakwoodpackingpieces,jointtestingetc complete all as per drawings, specifications and as directed by the Engineer-in-charge. 32 PVC SWR Rain water pipe 110mm outer dia 33 Dismantling of RCC works at all levels by manually / by mechanical including Cutting and stacking of steel reinforcement bars and disposal of unserviceable materials within 50m lead, labour, tools required etc. complete in all respects as per specifications and directed by the Engineer-in-charge. 34 Dismantling brick works at all levels by manually / by mechanical including Cutting and stacking of steel reinforcement bars and disposal of unserviceable materials within 50m lead, labour, tools required etc. complete in all respects as per specifications and directed by the Engineer-in-charge. 35 Labour charges for cleaning of Existing aluminium windows, doors, glass partitions, ventilators, handrails at all levels by suitable means to the satisfaction of Engineer-in-charge. Itincludes removing dust, paint, cementicious materials etc, Changing the rubber beading ,Springs, screws, locks and push etc,.and as directed by the engineer in charge 36 Providing and applying two or more coats of 250 micons Acid/alkali resistant paint conforming to IS:9862 of approved brand and colour to ceiling and walls , including supplying of all materials, preparartion of surface to receive paint, providing and applying bitumen primer conforming to IS :158, labour, materials, scaffolding,etc., complete all as per manufacturers recommendations and as approved by EIC, at all elevations, complete as per specifications. 37 Providing Acid / Alkali resistant flooringusing 12mm thick Acid / Alkali resistant tiles of pelican or approved equivalent make as per IS: 4457 including preparation of surface applying one coat of primer, application of 10mm thick mastic membrane, laying of tiles in potassium silicate based mortar of 2mm thick and pointing the joints with to a depth of 10 to 12mm with CNSL mortar etc. cleaning the surface neatly at the time of handing over the area complete all as per manufacturers specification and as directed by the Engineer-in-charge.Note: The sample tile shall be got approved by the Architect / Engineer before procurement. The job shall be got executed by specialists in this line. 38 Chemical anchoring of TMT bars Fe500D grade steel reinforcement of dia upto 20mm embedding in RC structures including power drilling holes of appropriate diameter in reinforced or plain cement concrete upto depth minimum 10 times dia of the rebar or as per manufacturer specification, cleaning and filling the hole, fixing the reinforcement in position with RE 500 chemical of HILTI make or equivalent anchoring adhesives and finishing, scaffolding etc all complete as per specification and as directed by Engineer-in-Charge. Note: 1. Reinforcement will be measured and paid under relevant item. 2. Holes fouling with embedded steel shall be grouted at your own cost. 39 Providing and laying pressed flat clay tiles 230x230mm size and 20mm thick tiles on roof slab jointed with cement mortar1:3 mixed with 2% integral waterproofing compound laid over a bed of 20mm thick cement mortar1:3 and finished neat complete all as per specificationsand as directed by the Engineer-in-Charge. 40 Labour charges inspection, removing and Refixing the Aluminium Louvers including cleaning at all elevations. Including requisite scafolding, labours, tools and tackles and consumbales like screws and rubber gaskets (if any) complete all as per specifications and as directed by the Engineer-in-Charge 41 Labour charges for removing and Refixing of existing Wooden flush with cleaning of door, applying of two coats enamel paints, changing the hinges, rectification of locks at all elevations including scafolding, labours, tools and tackels complete all as per specifications and as directed by the Engineer-in-Charge. 42 Dismantling tile work (thickness of tile up to 25mm) in floors and roofs laid in cement mortar at all levels including stacking materials within 50 metres lead complete all as per specifications and directed by the Engineer-in-charge. 43 Grouting at and around penetrations, construction joints and at all locations as specified in the drawingincluding necessary scaffolding, drilling holes of specified diameter, supply of grout material, PVC pipe nozzle, fixing, providing all necessary equipment like mixer and pump, manpower etc., allcomplete required to grout at specified pressure, cutting the pipes after setting of grout, sealing, finishing the surface to achieve required leak-tightness to the satisfaction ofthe EIC. Only quantity of grout injected shall be measured and paid for. This item is not intended for repair works falling under the scope of contractor for concreting works. 44 Using Cement based grouting suitable for pumping with addition of approved anti shrinkage compound @ 2% weight of cementwithwater reducing admixture as required and as directed by the EIC. 45 Providing and laying 60mm thick rubber moulded with vibratory compaction Factory made cement concrete precast interlocking paver block of M30grade made and approved size,shape,design,colour & pattern including laid over 100mm thick compacted bed of coarse sand,filling the joints with coarse sand,compaction mechanically etc.all complete all as per the direction of the Engineer-in-charge.Note:The sample tile shall be got approved by the Engineer-in-charge before procurement. 46 Providing, supplying, cutting, bending to shape, welding, fabricating, hoisting, placing and fixing in position structural steel members like MS structural embedments/pipe and sleeves/penetration etc.Using MS angles, cage ladder, channels, I-sections, plates, tees, flats, rounds, square sections etc. including chamfering and rounding off the edges, applying a coat of Red lead paint primer / Zinc chromate primer of approved make and 2 coats of flat oil paint / sythetic enamel paint of approved colour and make, scaffolding and staging required for fabrication as well as erection complete all as per specifications, drawings and as directed by the Engineer-in-charge.Note: Lifting device arrangements if any required also arranged by the contractor at his own cost. 47 Earthwork excavation by mechanical means (Hydraulic excavator) or manual means for foundation, substructures, plinth beam, cess pits & trenches, all kinds of foundation etc.,in all types of soil like hard gravelly soil, sandy soil for the followingdepth from average ground level upto the required founding level, line and grades in both dry and wet conditions including shoring, strutting, bailing out of water if necessary, levelling, ramming and achieving 95% modified proctor density at the bottom of trenches, dressing of sides, stacking the excavated materials away from the edge of trenches, refilling the sides of foundation as required with selected excavated earth and depositing / disposing the surplus excavated earth (Disposed soil to be leveled by breaking clods, if any and neatly dressed and leveled) within the lead specified below all complete as per specifications and as directed by the Engineer-in-charge.(if water encountered during excavation , it shall be drained out by proper dewatering arrangements and power supply required for dewatering shall borne by the contractor.)Note:1. Proper compaction shall be carried out at the founding level with a suitable roller of adequate capacity.2. Refilling shall be done in layers of not more than 300mm. 48 All kinds of soil with depth upto 1.5m below average Ground level and disposing surplus excavated earth upto a lead of 1Km. 49 Construction of granular sub-bass by providing close graded Material, mixing in a mechanical mix plant at OMC, carriage of mixed Material to work site, spreading in uniform layers with motor grader on prepared surface and compacting with vibratory power roller to achieve the desired density, complete as per clause 401 of MoRT&H specifications for road and bridge works (4th Revision) and as directed by the Engineer-in-charge. 50 for Grading-I material 51 Cleaning the surrounding area of various building at all levels by removing the vegetation growth, including clearing choked rainwater downtake pipes, periodically as and when required including necessary ladders and scaffolding arrangements, Conveying the removed unwanted materials to the bins with a lead up to 1.0 Km etc, complete as directed by the Engineer-in-Charge 52 Plinth protection, and drain around the buildings upon removal of preacst covers and placing the same. 53 Labour charges for inspection of steel door hinges, closers, locks, panic devices, and strikes for secure mounting and proper operation and also door closer speed and latching function. Ensure thresholds, seals, and weather-stripping are intact and functioning. Lubricate hinges, pivots, locks, and other moving parts using light machine oil or graphite lubricant. Adjust hinges and hardware to correct door sag or misalignment. Ensure proper latching and sealing without excessive force and as directed by Engineer -in -charge. 54 Providing and fixing roofing sheet, cladding with 0.47mm thick colour coated concelled system profile corrugated/semi corrugated/plain zincalume sheets of 55mpa yield stress (AS 1397 - Zincalume AZ 150) with coating class AS/NZS 2728 (minimum 150 grams per relevant standard) having a total coating thickness of 35micron. The sheet should be rolled over specially designed concealed fixing clip manufactred from hi-tensile Aluminium Zinc alloy Zincalumen steel based and galvanized hooks. The clip should be fastened with minimum 40micron Zinc coated / minium 25micron Zinc-Tin alloy coated. The rate is inclusive of all fixtures required for fixing the side roof, cladding on all sides, ridges etc. complete all as per specification and as directed by the Engineer-in-Charge. 55 Providing and laying polished Kota stone for flooring & Skirting of required size as specified colour, free from cracks, fissures & flakes with straight edges & perfect corners laid at right angles as per pattem over a bedding of cement mortar 1:4, 20mm thick (or backing of cement mortar 1:3, 12mm thick as mentioned below) pointed neatly with white cement mixed with coloring pigment to match colour of slab and finished in all respects, including machine / hand cutting to required size and shape, curing, moulding and polishing of exposed edges, fixing stone to level and plumb, cleaning the surface neatly at the time of handing over the area, all materials and labour complete as per specifications and as directed by the Engineer-in-Charge. Note: The sample Kota stone slab shall be got approved by the Architect/Engineer before procurement 56 In steps / step thread, 25mm thick Kota slab of required coour, Moulding and polishing of exposed edges, fixing with 20mm thick bedding in CM 1:4. The Kota stone slab shall be single length to match step length.
