DEPOSIT-Replacement of old water chiller A.H.U Installed at the conference hall of Govt Guest House ,Kovalam-Air ConditioningElectrical AC Work

Amount

Replacement of A.H.U

OD27170/2023-2024:Supply, Installation, Testing and commissioning of factory built floor mounted chilled water double skin type horizontal / vertical air handling units made of 25 mm thick panels consisting of pre plasticized G.I casing of thickness 0.8 mm outside layer and 0.8 mm inside layer with polyurethane foam ( PUF) insulation factory injected between them by injection moulding machine, complete with blower section with blower suitable for static pressure as required, minimum 2 bend GSS/ PVC eliminators, cooling coil section with aluminium finned copper tubes (tubes thickness not less than 0.5 mm ) cooling coil of 6 row deep, filter section with 50 mm thick metal viscous/ washable synthetic type air prefilters, belt drive package with TEFC drive motor suitable for 415 +/- 10% volts, 50 Hz, 3 Phase AC supply, drain connections, stainless steel (18 G) drain pan with PUF insulation, 150 mm dia. dial type pressure gauges ( 2 nos.) and industrial type thermometers (2 nos.) at the inlet and outlet of coil, auto purge valve wherever required, necessary vibration isolation arrangement etc. complete as per specification and of following capacities.Double skin AHU Units of 6 row cooling coil of 2500CFM

16.3.12:Supplying, laying/ fixing, testing and commissioning of following nominal sizes of chilled water piping plumbing inside the building (with necessary clamps, vibration isolators and fittings but excluding valves, strainers, gauges etc.) duly insulated with fire retardant quality expanded polystrene moulded pipe section of density 20 kg/ cu.m after a thick coat of cold setting adhesive (CPRX compound) wrapping with 500g polythene faced hessain and finally applying 0.63 aluminium sheet cladding complete with type 3, grade , roofing feltstrip (as per IS: 1322 as amended up to date ) at joints repairing of damage to building etc. as per specifications and as required complete in all respect. Note:- The pipes of sizes 150 mm & below shall be M.S.'C" class as per IS : 1239 and pipes size above 150 mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35mm thick M.S. Sheet for pipes upto 350 mm dia. and from minimum 7 mm thick MS sheet for pipes of 400 mm dia and above.Chilled water piping of nominal size - 40mm dia. (50mm thick expanded polysterene)

16.3.14:Supplying, laying/ fixing, testing and commissioning of following nominal sizes of chilled water piping plumbing inside the building (with necessary clamps, vibration isolators and fittings but excluding valves, strainers, gauges etc.) duly insulated with fire retardant quality expanded polystrene moulded pipe section of density 20 kg/ cu.m after a thick coat of cold setting adhesive (CPRX compound) wrapping with 500g polythene faced hessain and finally applying 0.63 aluminium sheet cladding complete with type 3, grade , roofing feltstrip (as per IS: 1322 as amended up to date ) at joints repairing of damage to building etc. as per specifications and as required complete in all respect. Note:- The pipes of sizes 150 mm & below shall be M.S.'C" class as per IS : 1239 and pipes size above 150 mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35mm thick M.S. Sheet for pipes upto 350 mm dia. and from minimum 7 mm thick MS sheet for pipes of 400 mm dia and above.Chilled water piping of nominal size - 25mm dia. (50mm thick expanded polysterene)

16.7.1.8:Supplying, fixing, testing and commissioning of following valves, strainers, gauges in the chilled water plumbing duly insulated to the same specifications as the connected piping and adequately supported as per specifications. Butterfly valve (Manual) with C I body SS Disc, Nitrile Rubber Seal & O-Ring PN 16 pressure rating for chilled water/ hot water circulation as specified .Butterfly valve (Manual) 40 mm

16.11.4.7:Supply, Installation, Testing and Commissioning of following sizes electronic, selfbalancing, pressure independent type dynamic balancing valve with integrated 2 way modualating control valves in a single body. The actuator shall be capable of accepting upto 1 OV DC and upto 20mA electric signal and shall provide similar transduced feedback output to control system. Maximum close off pressure shall not be less than 6 Bar for upto 50 mm valves and not be less than 7 Bar for 65 mm & above. Valves should have pressure rating of 25 Bar minimum. 1640mm dia.

OD175004/2022-2023:Supply, testing and commissioning of condensate condensate drain UPVC piping as per BIS 4985 with necessary clamps, supports, hangers and fitting such as bend, tees, reducers etc. duly insulated with 9 mm thick chemically cross-linked closed cell ntrile rubber insulation, fire retardant grade as per the drawing and relevant standards.etc complete as per specifications and as required., all complete as per direction of Engineer-in-Charge <br>25mm dia UPVC

16.12.2.2:Supply, Installation, balancing and commissioning of fabricated at site GSS sheet metal rectangular / round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports, etc as per approved drawings and specifications of following sheet thickness complete as required.Site fabricated GSS sheet metal rectangular ducting as per IS 655-2006 for 0.8. mm thick

16.15:Suppluying and Fixing of powder costed extruded aluminium Supply Air Grills with aluminium volume control dampers as per specifications.

16.4.5:Supplying, laying/fixing , testing and commissioning of following thickness resin bonded fiber glass pipe section insulation having density 80 kg/cum duly covered with a layer of 120gm/sqm polythene sheet (vapour barrier ) on existing pipe and finally applying 0.63 mm aluminium sheet cladding complete with type 3 grade 1 roofing feltstrip (as per IS: 1322 as amended up to date at joints etc. as per specifications and as required.insulation of thickness 25mm on existing pipe

1.17.21:Supplying and drawing following sizes of FRLS PVC insulated copper conductor, single core cable in the existing surface / recessed steel/ PVC conduit as required.3 x 4 sq. mm

1.17.22:Supplying and drawing following sizes of FRLS PVC insulated copper conductor, single core cable in the existing surface / recessed steel/ PVC conduit as required.4 x 4 sq. mm

1.21.2:Supplying and fixing of following sizes of medium class PVC conduit along with accessories in surface/ recess including cutting the wall and making good the same in case of recessed conduit as required.25 mm

1.21.4:Supplying and fixing of following sizes of medium class PVC conduit along with accessories in surface/ recess including cutting the wall and making good the same in case of recessed conduit as required.40 mm

90.12.7.12:Supply, laying and clamping of 1 no. PVC insulated and PVC sheathed armoured aluminium power cable, 1.1 KV grade of the following sizes using clamps noted along with the cables, spacing of clamps not exceeding 60cms, making good the damages , colour washing etc. as required.3 core 4 sq mm with factory made clamp

90.12.1.29:Supply & laying of one number PVC insulated and PVC sheathed armoured aluminium power cable of 1.1KV grade of the following sizes in ground including excavation of trench of size 35 x 75 cm, refilling the trench etc. as required but excluding sand cushioning and protective covering (in ordinary soil).3.5 core 50 sq mm

90.12.7.29:Supply, laying and clamping of 1 no. PVC insulated and PVC sheathed armoured aluminium power cable, 1.1 KV grade of the following sizes using clamps noted along with the cables, spacing of clamps not exceeding 60cms, making good the damages , colour washing etc. as required.3.5 core 50 sq mm with factory made clamp

90.16.1.2:Supply and drawing bare earthing conductors of the following sizes along with wiring/ cables and giving connection as required2.65 mm copper conductor (12 SWG)

OD175013/2022-2023:Supply and Fixing of Push button station enclosure1/2/3 hole

2.10.4:Supplying and fixing 5 amps to 32 amps rating, 240/415 volts, "C" curve, miniature circuit breaker suitable for inductive load of following poles in the existing MCB DB complete with connections, testing and commissioning etc. as required.Triple pole

2.13.1:Supplying and fixing following rating, four pole, 415 volts, isolator in the existing MCB DB complete with connections, testing and commissioning etc. as required.40 amps

OD175014/2022-2023:Dismantling existing AHU and accessories, duct and other connected item , dismantling, transporting and staking in new location and reusing the item if required . and patch work, colour washing etc

OD175006/2022-2023:Supplying and fixing of water proof (opaque or transparent ) Empty box (Size- 253x200x117) for fixing Contactors /SDU etc with IP 65 Hensel or equivalent make

OD175012/2022-2023:Supplying and fixing of Isowall Puf Panel 50mm thickness on for fixing on wall/roof slab using suitable anchor bolts etc. as required

OD175011/2022-2023:Supply, installing, testing and commissioning of ceiling Mounted open type 2 TR FCU's each complete with filters , sufficient Capacity 3 row copper tube type cooling coil, double inlet forward curved centrifugal type blower, with digital fan speed control and connected wiring etc , Single piece insulated drain pan(SS ) has ribbed construction for faster condensate disposal .whole body with min 20 gauge GI and FCU motor of required capacity including fixing the unit with proper frame work, supports etc as required making the unit in good working condition etc. fixing as required.

OD175009/2022-2023:Supply and Fixing of Flush head Push Button with 1 NC Block

OD175010/2022-2023:Supply and fixing of Flush head Push Button with 1 NO Block

OD175008/2022-2023:Supply and fixing contactor of 9/12 A 3 Pole ,AC Power Contractors for 3ph motor and giving connections etc as required

OD175007/2022-2023:Supply and fixing thermal over load relay suitable for 2/3 HP three phase motor etc as required

OD181535/2022-2023:Supply and fixing of acoustic lining of supply air duct and plenum with Nitrile rubber (cross link closed cell preformed sections of polyethy lene) Insulation-19 mm thickness dia pipe , with 25 mm X 25 mm Gl section of 1.25 mm thick, at 600 mm centre to centre covered with Reinforced Plastic tissue paper and 0.5 mm thick perforated aluminum sheet fixed to inside surface of ducts with cadmium plated nuts, bolts, stick pins, CPRX compound etc. complete as required and as per specifications.

14.11:Providing brick work (in width 225 mm or more) with F.P.S. bricks of class designation 7.5 in cement mortar 1:4 (1 cement : 4 coarse sand) at all levels.

OD32209/2023-2024:SITC of fixed speed air conditioning 15hp Scroll compressor, nominal cooling capacity of 38.6kW Rotolock connection, suitable for refrigerants R134a/R404A/R407C/ R513A working in 3 phase 50Hz 380V-400V AC supply, shifting,leading,lifting into the location, Pressure testing by using dry nitrogen, Vacuum holding, gas filling etc

Civil work

15.7.1: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.In mud mortar

26.26.1:Providing & fixing false ceiling at all heights with GRG (Glass Fibre Reinforced Gypsum) false ceiling tiles of Size 595x595 mm of approved texture, design and patterns having moisture content less than 2%, humidity resistance of 99%, NRC0.50 to 0.75 as per IS 8225:1987, Non combustible as per BS 476 (part 4)-1970 and light reflectance of 85% (minimum) to be laid in true horizontal level suspended on inter-locking metal T-Grid of hot dipped galvanised iron section of 0.33mm thick (galvanized @ 120 grams per sqm including both sides) comprising of main-T runners of size 15x32 mm of length 3000 mm, cross - T of size 15x32 mm of length 1200 mm and secondary intermediate cross-T of size 15x32 mm of length 600mm to form grid module of size 600 x 600 mm, suspended from ceiling using galvanised mild steel items (galvanizing @ 80 grams per sqm) i.e. 50 mm long, 8 mm outer diameter M-6 dash fasteners, 6 mm dia fully threaded hanger rod upto 1000 mm length and L-shape level adjuster of size 85x25x2 mm. Galvanised iron perimeter wall angle of size 24x24x0.40 mm of length 3000 mm to be fixed on periphery wall / partition with the help of plastic rawl plugs at 450 mm center to center and 40 mm long dry wall wood screws. The work shall be carried out as per specifications, drawing and as per directions of the Engineer-in-Charge.With semi perforated 12 mm thick micro tegular edged GRG false ceiling tiles.

13.60.1:Wall painting with acrylic emulsion paint of approved brand and manufacture to give an even shade:Two or more coats on new work

13.26:Providing and applying plaster of paris putty of 2 mm thickness over plastered surface to prepare the surface even and smooth complete.

13.48.1:Finishing with Deluxe Multi surface paint system for interiors and exteriors using primer as per manufacturers specifications:Two or more coats applied on walls @ 1.25 ltr/10 sqm over and including one coat of special primer applied @ 0.75 ltr /10 sqm

25.2:Designing, fabricating, testing, protection, installing and fixing in position semi (grid) unitized system of structural glazing (with open joints) for linear as well as curvilinear portions of the building for all heights and all levels, including: a) Structural analysis & design and preparation of shop drawings for the specified design loads conforming to IS 875 part III (the system must passed the proof test at 1.5 times design wind pressure without any failure), including functional design of the aluminum sections for fixing glazing panels of various thicknesses, aluminium cleats, sleeves and splice plates etc. gaskets, screws, toggles, nuts, bolts, clamps etc., structural and weather silicone sealants, flashings, fire stop (barrier)-cumsmoke seals, microwave cured EPDM gaskets for water tightness, pressure equalisation & drainage and protection against fire hazard including: b) Fabricating and supplying serrated M.S. hot dip galvanised / Aluminium alloy of 6005 T5 brackets of required sizes, sections and profiles etc. to accommodate 3 Dimentional movement for achieving perfect verticality and fixing structural glazing system rigidly to the RCC/ masonry/structural steel framework of building structure using stainless steel anchor fasteners/ bolts, nylon seperator to prevent bimetallic contacts with nuts and washers etc. of stainless steel grade 316, of the required capacity and in required numbers. c) Providing and filling, two part pump filled, structural silicone sealant and one part weather silicone sealant compatible with the structural silicone sealant of required bite size in a clean and controlled factory / work shop environment , including double sided spacer tape, setting blocks and backer rod, all of approved grade, brand and manufacture, as per the approved sealant design, within and all around the perimeter for holding glass. d) Providing and fixing in position flashings of solid aluminium sheet 1 mm thick and of sizes, shapes and profiles, as required as per the site conditions, to seal the gap between the building structure and all its interfaces with curtain glazing to make it watertight. e) Making provision for drainage of moisture/ water that enters the curtain glazing system to make it watertight, by incorporating principles of pressure equalization, providing suitable gutter profiles at bottom (if required), making necessary holes of required sizes and of required numbers etc. complete. This item includes cost of all inputs of designing, labour for fabricating and installation of aluminium grid, installation of glazed units, T&P, scaffolding and other incidental charges including wastages etc., enabling temporary structures and services, cranes or cradles etc. as described above and as specified. The item includes the cost of getting all the structural and functional design including shop drawings checked by a structural designer, dully approved by Engineer-in-charge. The item also includes the cost of all mock ups at site, cost of all samples of the individual components for testing in an approved laboratory, field tests on the assembled working structural glazing as specified, cleaning and protection till the handing over of the building for occupation. In the end, the Contractor shall provide a water tight structural glazing having all the performance characteristics etc. all complete as required, as per the Architectural drawings, as per item description, as specified, as per the approved shop drawings and as directed by the Engineerin- Charge. Note:- 1. The cost of providing extruded aluminium frames, shadow boxes, extruded aluminium section capping for fixing in the grooves of the curtain glazing and vermin proof stainless steel wire mesh shall be paid for separately under relevant items under this sub-head. However, for the purpose of payment, only the actual area of structural glazing (including width of grooves ) on the external face shall be measured in sqm. up to two decimal places. Note:-2. The following performance test are to be conducted on structural glazing system if area of structural glazing exceeds 2500 Sqm from the certified laboratories accreditated by NABL(National Accreditation Board for Testing and Calibration Laboratories), Department of Science & Technologies, India. Cost of testing is payable separately. The NIT approving authority will decide the necessity of testing on the basis of cost of the work, cost of the test and importance of the work. Performance Testing of Structural glazing system Tests to be conducted in the NBL Certified laboratories 1. Performance Laboratory Test for Air Leakage Test (-50pa to ? 300pa) & (+50pa to +300pa) as per ASTM E-283-04 testing method for a range of testing limit 1 to 200 mVhr? 2. Static Water Penetration Test. (50pa to 1500pa) as per ASTME- 331-09 testing method for a range up to 2000 ml.? 3. Dynamic Water Penetration (50pa to 1500pa) as per AAMA 501.01-05 testing method for a range upto 2000 ml? 4. Structural Performance Deflection and deformation by static air pressure test (1.5 times desing wind pressure without any failure) as per ASTME-330-10 testing method for a range upto 50 mm? 5. Seismic Movement Test (upto 30 mm) as per AAMA 501.4-09 testing method for Qualitative test? Tests to be conducted on site 6. Onsite Test for Water Leakage for a pressure range 50 kpa to 240 kpa (35psi) upto 2000ml?

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Bidder Name

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SREEJITH S G