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| Sl. No. | Item Description |
| 1 | Supplying, installation, testing and commissioning of modular type Variable Refrigerant Flow / Variable Refrigerant Volume (VRF/VRV) air-cooled outdoor unit(s) suitable for cooling/heating, having 100% hermetically sealed inverter-type twin rotary/scroll compressor(s) — minimum two compressors with individual separate PCB for above 14 HP modules — microprocessor-based controller, top-discharge type condensing unit(s) with R-410A refrigerant or equivalent, vibration isolators with suitable foundation etc. complete as required. Condenser fan shall be capable of operating at different speeds with respect to load. The condenser shall be coated with hydrophilic film to prevent water accumulation, enhance water dispersion, reduce degradation and improve performance and durability. The unit shall deliver rated capacity in conformity with IS 18728:2024 and CPWD Specifications and shall work even at 50°C ambient temperature without tripping, delivering 100% rated capacity up to 39°C. Suitable for 400V ±10%, 3-phase, 50 Hz AC supply and BMS-compatible. Unit shall be filled with first charge of refrigerant and ready for use. ISEER of the unit shall be as per Energy Conservation and Sustainable Building Code (ECSBC) 2024 (for capacity <40 kWr ISEER 5.4; capacity ≥40 and <70 kWr ISEER 5.5; capacity ≥70 kWr ISEER 5.6 for ECSBC building). Including all inter-connections, piping connections, power and control wiring terminations at unit, vibration isolation pads, weather-proof canopy/guard if on open terrace, refrigerant charging beyond factory pre-charge for extended piping as applicable, and all accessories as per CPWD specifications, complete in all respects.Capacity: 14 HP to 22 HP range. Configuration: 2 nos. × 22 HP Heat Pump ODU = 44 HP total for 43.8 TR IDU load (Connection Ratio = 118%). Location: terrace-level AHU/ODU room. |
| 2 | Supplying, installation, testing and commissioning of 0.8 TR (minimum capacity) 4-way cassette-type indoor ceiling-mounted unit equipped with synthetic washable media pre-filter, fan section with low-noise dynamically balanced blower, multi-speed motor, coil section with DX copper coil, electronic expansion valve (EEV), outer cabinet, built-in drain pump (minimum 750 mm lift), decorative square grille panel with anti-condensation lining, necessary ceiling supports and suspension hardware, vibration isolation pads, corded remote controller etc., suitable for operation on single-phase 230V ±10%, 50 Hz AC supply, complete as required. The indoor unit must shut down upon receiving a signal from the BMS system / fire alarm signals. The system shall be capable of adjusting airflow as per room requirement in auto mode. Cooling capacity rated at air inlet conditions of 27°C DB and 19°C WB temperature. Make shall be same OEM as outdoor unit. Including refrigerant piping connections at unit, condensate drain connection, control wiring termination, ceiling opening reinforcement if required, and all accessories as per CPWD specifications, complete in all respects.Location: Internet Room (6.67 sq.m) — 1 no. |
| 3 | Supplying, installation, testing and commissioning of 1.0 TR (minimum capacity) 4-way cassette-type indoor ceiling-mounted unit equipped with synthetic washable media pre-filter, fan section with low-noise dynamically balanced blower, multi-speed motor, coil section with DX copper coil, electronic expansion valve (EEV), outer cabinet, built-in drain pump (minimum 750 mm lift), decorative square grille panel with anti-condensation lining, necessary ceiling supports and suspension hardware, vibration isolation pads, corded remote controller etc., suitable for operation on single-phase 230V ±10%, 50 Hz AC supply, complete as required. The indoor unit must shut down upon receiving a signal from the BMS system / fire alarm signals. The system shall be capable of adjusting airflow as per room requirement in auto mode. Cooling capacity rated at air inlet conditions of 27°C DB and 19°C WB temperature. Make shall be same OEM as outdoor unit. Including refrigerant piping connections at unit, condensate drain connection, control wiring termination, ceiling opening reinforcement if required, and all accessories as per CPWD specifications, complete in all respects.Locations: Library Office (14.45 sq.m), Entrance Lobby (14.55 sq.m), Research Room-1 (16.2 sq.m), Research Room-2 (12.3 sq.m), Research Room-3 (14.5 sq.m) — 5 nos. |
| 4 | Supplying, installation, testing and commissioning of 2.0 TR (minimum capacity) 4-way cassette-type indoor ceiling-mounted unit equipped with synthetic washable media pre-filter, fan section with low-noise dynamically balanced blower, multi-speed motor, coil section with DX copper coil, electronic expansion valve (EEV), outer cabinet, built-in drain pump (minimum 750 mm lift), decorative square grille panel with anti-condensation lining, necessary ceiling supports and suspension hardware, vibration isolation pads, corded remote controller etc., suitable for operation on single-phase 230V ±10%, 50 Hz AC supply, complete as required. The indoor unit must shut down upon receiving a signal from the BMS system / fire alarm signals. The system shall be capable of adjusting airflow as per room requirement in auto mode. Cooling capacity rated at air inlet conditions of 27°C DB and 19°C WB temperature. Make shall be same OEM as outdoor unit. Including refrigerant piping connections at unit, condensate drain connection, control wiring termination, ceiling opening reinforcement if required, and all accessories as per CPWD specifications, complete in all respects.Locations: Librarian Room (25 sq.m, 1 no.), GF Book Store (151.93 sq.m, 4 nos.), FF Book Store (150 sq.m, 4 nos.) — 9 nos. total. |
| 5 | Supplying, installation, testing and commissioning of 10.0 TR (minimum capacity) high-static ducted-type indoor unit with minimum 78 Pa external static pressure (ESP), comprising DX copper coil, electronic expansion valve (EEV), blower/fan section with dynamically balanced centrifugal fan, multi-speed ECM/inverter motor, return air filter section with G4-grade washable synthetic media filter, vibration isolation mounts, drain tray with drain connection, factory-wired control board, and all necessary accessories. Suitable for operation on single-phase 230V ±10%, 50 Hz AC supply. The indoor unit must shut down upon receiving a signal from the BMS system / fire alarm signals. Make shall be same OEM as outdoor unit. Including ceiling suspension arrangement with anti-vibration hangers, flexible duct connectors at supply and return, refrigerant piping connections at unit, condensate drain connection with trap, control wiring termination, access provision for filter maintenance, and all accessories complete in all respects as per CPWD specifications.For double-height reading hall (AHU-1 and AHU-2) — 2 nos. |
| 6 | Supplying, installation, testing and commissioning of Energy Recovery Ventilator (ERV) — enthalpy-type heat recovery wheel, rated at 1000 CFM (minimum), comprising supply and exhaust fans with EC/inverter motors, enthalpy recovery wheel with minimum 70% total energy recovery efficiency at rated conditions (as per ASHRAE 84), integrated microprocessor-based controller with defrost and filter-change indication, G4-grade washable pre-filter on outdoor air intake side, motor-operated fresh air and exhaust air dampers, drain tray with connection, vibration isolation mounts, and factory-wired control panel. Casing shall be double-skin insulated (25 mm minimum) with thermal break. BMS-compatible (Modbus/BACnet). Including all ductwork connections with flexible connectors at inlet and outlet, condensate drain piping from unit to nearest drain point, ceiling/wall suspension arrangement, power supply termination, control wiring, and all accessories complete in all respects..For fresh air ventilation to double-height reading hall — 1 no. |
| 7 | Supplying, installation, testing and commissioning of Y-branch / T-branch / multi-joints (refnet joints) for connecting indoor units to refrigerant piping network. Joints shall be of same Original Equipment Manufacturer (OEM) make as of ODUs and IDUs. Including all brazing, nitrogen purging during brazing, insulation of joints with Class-O closed-cell nitrile rubber insulation of same thickness as adjoining pipe insulation, leak testing at each joint with electronic leak detector, and all accessories as per manufacturer's installation manual and CPWD specifications, complete in all respects.Total IDUs = 17 nos.; approximately 19 refnet joints required as per piping layout. |
| 8 | Supplying, installation, testing and commissioning of outdoor multi-joints (header joints) for combining multiple outdoor unit modules into a single refrigerant piping system. Joints shall be of same Original Equipment Manufacturer (OEM) make as of ODUs. Including all brazing, nitrogen purging during brazing, insulation of joints with Class-O closed-cell nitrile rubber insulation of same thickness as adjoining pipe insulation, leak testing at each joint with electronic leak detector, and all accessories as per manufacturer's installation manual and CPWD specifications, complete in all respects.For combining 2 nos. ODU modules — 2 nos. |
| 9 | Supplying, installation, testing and commissioning including vacuumisation and nitrogen pressure testing of 34.9 mm OD (hard drawn) copper refrigerant piping with tube wall thickness of 1.62 mm (minimum) for VRF/VRV system, complete with all fittings (elbows, tees, reducers, couplings), brazing with silver-bearing brazing alloy under continuous nitrogen purging, suitable adjustable ring-type hanger supports at maximum 1.5 m centres, insulated with Class-O closed-cell elastomeric nitrile rubber tubular insulation of 19 mm thick for suction lines and 9 mm thick for liquid lines (or as per manufacturer's recommendation for pipe size), with all joints in insulation sealed using nitrile rubber adhesive and 50 mm wide self-adhesive nitrile rubber tape, vapour barrier maintained throughout. Including pipe clamps with rubber lining to prevent copper-to-steel contact, fire-stop sealant at all wall/slab penetrations, and all accessories as per CPWD specifications and manufacturer's installation manual, complete in all respects. |
| 10 | Supplying, installation, testing and commissioning including vacuumisation and nitrogen pressure testing of 28.58 mm OD (hard drawn) copper refrigerant piping with tube wall thickness of 1.2 mm (minimum) for VRF/VRV system, complete with all fittings (elbows, tees, reducers, couplings), brazing with silver-bearing brazing alloy under continuous nitrogen purging, suitable adjustable ring-type hanger supports at maximum 1.5 m centres, insulated with Class-O closed-cell elastomeric nitrile rubber tubular insulation of 19 mm thick for suction lines and 9 mm thick for liquid lines (or as per manufacturer's recommendation for pipe size), with all joints in insulation sealed using nitrile rubber adhesive and 50 mm wide self-adhesive nitrile rubber tape, vapour barrier maintained throughout. Including pipe clamps with rubber lining to prevent copper-to-steel contact, fire-stop sealant at all wall/slab penetrations, and all accessories as per CPWD specifications and manufacturer's installation manual, complete in all respects. |
| 11 | Supplying, installation, testing and commissioning including vacuumisation and nitrogen pressure testing of 19 mm OD (hard drawn) copper refrigerant piping with tube wall thickness of 1.2 mm (minimum) for VRF/VRV system, complete with all fittings (elbows, tees, reducers, couplings), brazing with silver-bearing brazing alloy under continuous nitrogen purging, suitable adjustable ring-type hanger supports at maximum 1.2 m centres, insulated with Class-O closed-cell elastomeric nitrile rubber tubular insulation of 19 mm thick for suction lines and 9 mm thick for liquid lines (or as per manufacturer's recommendation for pipe size), with all joints in insulation sealed using nitrile rubber adhesive and 50 mm wide self-adhesive nitrile rubber tape, vapour barrier maintained throughout. Including pipe clamps with rubber lining, fire-stop sealant at all wall/slab penetrations, and all accessories as per CPWD specifications and manufacturer's installation manual, complete in all respects. |
| 12 | Supplying, installation, testing and commissioning including vacuumisation and nitrogen pressure testing of 12.7 mm OD (soft drawn) copper refrigerant piping with tube wall thickness of 1.2 mm (minimum) for VRF/VRV system, complete with all fittings (elbows, tees, reducers, couplings), brazing with silver-bearing brazing alloy under continuous nitrogen purging, suitable adjustable ring-type hanger supports at maximum 1.0 m centres, insulated with Class-O closed-cell elastomeric nitrile rubber tubular insulation of 13 mm thick for suction lines and 9 mm thick for liquid lines (or as per manufacturer's recommendation for pipe size), with all joints in insulation sealed using nitrile rubber adhesive and 50 mm wide self-adhesive nitrile rubber tape, vapour barrier maintained throughout. Including pipe clamps with rubber lining, fire-stop sealant at all wall/slab penetrations, and all accessories as per CPWD specifications and manufacturer's installation manual, complete in all respects. |
| 13 | Supplying, fabrication, installation, balancing and commissioning of factory-fabricated flat oval (elliptical profile) galvanised steel sheet metal ducting of 0.63 mm thickness (26 gauge) GI sheet conforming to IS:277 with zinc coating not less than 120 g/sq.m, for low-profile routing of supply and return air in ceiling voids for double-height hall ducted units. Complete with all elbows, bends, transitions (flat oval to rectangular at diffuser plenums and at unit connections), reducers, end caps, splitter dampers, turning vanes where required, neoprene rubber gaskets at all flanged joints, stiffeners and cross-breaks as per SMACNA/IS:655 for the given duct dimensions, hangers and supports (GI threaded rod with channel/angle trapeze) at maximum 2.4 m centres, sealant at all joints (Class-A seal as per SMACNA), and all accessories complete in all respects as per approved shop drawings, CPWD specifications and IS:655.Measurement: developed surface area of duct in sq.m. |
| 14 | Supplying, installation, balancing and commissioning of factory-fabricated galvanised steel sheet metal rectangular ducting of 0.63 mm thickness (26 gauge) GI sheet conforming to IS:277 with zinc coating not less than 120 g/sq.m, complete with neoprene rubber gaskets at all flanged joints, elbows, splitter dampers, turning vanes, hangers and supports (GI threaded rod with channel/angle trapeze at maximum 2.4 m centres), bends, transitions, reducers, end caps, collars, stiffeners and cross-breaks as per SMACNA/IS:655, sealant at all transverse joints (Class-A seal), and all accessories complete in all respects in conformity with IS:655, approved drawings and CPWD specifications.For branch connections from main elliptical duct to diffuser plenums, transitions from elliptical to rectangular at diffuser plenum boxes, and fresh air ducting from ERV to supply duct system. |
| 15 | Supplying, fixing, installation, testing and commissioning of supply air diffusers of powder-coated aluminium (minimum 1.2 mm sheet, polyester powder coat to IS:5905) with integral aluminium volume control dampers (opposed-blade type with locking quadrant), anti-smudge ring and removable core, in conformity with SMACNA/IS and as per CPWD specifications, complete in all respects as required. Including flexible duct connection (minimum 300 mm length) from plenum box to diffuser if required, airtight gasket seal between diffuser frame and ceiling tile/panel, and all fixing hardware.For double-height reading hall — 15 nos. Size and pattern as per approved HVAC layout drawings. |
| 16 | Supplying and fixing of 19 mm thick duly laminated aluminium-foil-faced, mat-finish, closed-cell nitrile rubber (Class 'O') insulation on existing/new ductwork after applying suitable adhesive specifically formulated for nitrile rubber bonding. All longitudinal and transverse joints shall be sealed with 50 mm wide × 3 mm thick self-adhesive nitrile rubber tape. Insulation shall be fire-rated as per BS 476 Part 6 and Part 7 (Class-1 surface spread of flame). The insulation shall have thermal conductivity not exceeding 0.038 W/mK at 40°C mean temperature and water vapour transmission rate not exceeding 0.02 g/m².h. Complete as per CPWD specifications and as required, including all cutting, fitting around hangers/supports, sealing at penetrations, and restoration of vapour barrier at all joints and terminations.For all supply, return and fresh air ductwork. (Refrigerant piping insulation is included under Item 31.14 series and is not measured separately here.) |
| 17 | Supplying, installation, testing and commissioning of VRF/VRV centralised group controller — touch-screen LCD type (minimum 7-inch display), with capacity to manage up to 64 indoor units, providing the following functions: individual and group ON/OFF control, weekly schedule timer programming (minimum 8 events per day), fault monitoring and error code display for all connected units, energy monitoring (kWh display per unit/group), operating mode lock and temperature range restriction, filter maintenance reminder, BMS gateway interface (Modbus RTU/TCP or BACnet as specified). Make shall be same OEM as VRF outdoor and indoor units. Including all communication wiring from controller to nearest IDU on the communication bus (communication wiring between IDUs covered under Electrical BOQ Item 7), wall-mounting bracket, power supply adaptor, configuration and addressing of all 17 connected indoor units, user training (minimum 2 hours), and all accessories as per manufacturer's specifications, complete in all respects. — 1 set. |
| 18 | Supplying, installation, testing and commissioning of volume control dampers — manual, opposed-blade type, constructed from galvanised steel sheet of minimum 1.2 mm thickness, with extruded aluminium or GI blades, nylon/bronze blade bearings, locking-type quadrant handle accessible below ceiling, and peripheral gasket seal. For balancing airflow in duct branches of ducted IDU system in double-height hall. Including all fixing hardware, duct collar/frame welded to ductwork, sealant at connections, and adjustment/balancing during TAB, complete in all respects as per CPWD specifications and SMACNA standards.Measurement: face area of damper in sq.m. |
| 19 | Supplying and fixing of flexible canvas connectors (duct connections) — minimum 200 mm wide heavy-duty neoprene-coated fibreglass fabric or EPDM rubber-coated canvas (fire-retardant, conforming to IS:3786 or UL-181 Class-1), with galvanised steel angle flanges on both sides for bolted connection to ductwork and equipment. For vibration isolation between rigid ductwork and ducted indoor units / ERV. Including all bolts, nuts, gaskets, sealant, and stainless steel band clamps if required, complete in all respects..At ducted IDU supply and return connections and ERV connections — 4 nos. |
| 20 | Supplying and fixing of anti-vibration isolators — spring-type or neoprene rubber-in-shear mount type (minimum 85% isolation efficiency at operating speed), suitable for the equipment weight and operating frequency, with levelling bolts and base frame adapter plates. For outdoor units on terrace (under each ODU foot), ducted indoor units (ceiling-mounted — integrated with suspension arrangement), and ERV unit. Including all fixing hardware, anchor bolts/through-bolts, load-distribution plates where mounted on waterproofed surface, and all accessories complete in all respects. — 16 nos. |
| 21 | Supplying, fabrication, and fixing of mild steel (MS) support frames — hot-dip galvanised after fabrication (minimum 86 microns zinc coating as per IS:2629/IS:4759) — for mounting outdoor units on terrace (raised frame minimum 300 mm above finished terrace level to allow drainage and airflow), ceiling-hung frames for ducted indoor units (using threaded rod and channel/angle trapeze with anti-vibration mounts), and wall/ceiling bracket frame for ERV unit. Frames to be designed for minimum 1.5× equipment operating weight. Including all anchor bolts, expansion fasteners, base plates, levelling shims, drain tray support (for ODU frame), and all welding, grinding, surface preparation, one coat zinc-rich primer and two coats synthetic enamel paint on all cut/drilled surfaces where galvanising is damaged, complete in all respects as per approved shop drawings. — 5 sets (2 for ODU, 2 for ducted IDU, 1 for ERV). |
| 22 | Supplying, installation, testing and commissioning of condensate drain piping — 25 mm nominal bore UPVC pipe conforming to IS:4985, Type-A pressure pipe, complete with all UPVC fittings (elbows, tees, couplings, reducers, end caps) jointed with solvent cement as per IS:9271. Piping shall be laid with minimum continuous fall of 1:100 (1%) towards collection point. All drain piping running through conditioned spaces and false ceiling voids shall be insulated with 9 mm thick closed-cell elastomeric nitrile rubber (Class 'O') tubular insulation with continuous vapour barrier, joints sealed with nitrile rubber adhesive and self-adhesive tape. Including U-trap/P-trap at each IDU drain outlet (trap seal depth as per manufacturer's recommendation, minimum 50 mm), pipe clamps/saddles with rubber lining at maximum 1.0 m centres, testing for gravity flow and leak-tightness, and all accessories complete in all respects. — 120 Rmt. |
| 23 | Testing, Adjusting and Balancing (TAB) and Commissioning of the complete VRF/VRV HVAC system including but not limited to: (a) verification of refrigerant charge in each circuit using sub-cooling/super-heat method and electronic leak detection at all brazed joints and flare connections; (b) airflow measurement and balancing at each supply air diffuser and return air grille using calibrated balometer/anemometer to achieve design CFM within ±10% tolerance; (c) duct leakage testing of main duct runs to SMACNA Class-A seal standard; (d) measurement and recording of supply air temperature, return air temperature, and room temperature at each indoor unit at steady-state conditions; (e) verification of condensate drain flow from each indoor unit; (f) verification of BMS/fire shutdown signal response from each indoor unit; (g) verification of central controller communication with all 17 indoor units; (h) noise level measurement at representative occupied spaces (target NC-35 for reading areas, NC-40 for office/stores); (i) preparation and submission of detailed TAB report with all measured values in tabulated format, instrument calibration certificates, and as-built system performance data. All instruments used shall have valid calibration certificates. — 1 L.S. |
| 24 | Supplying, fixing, installation, testing and commissioning of return air grilles — aluminium (extruded/sheet, minimum 1.2 mm thick), powder-coated to IS:5905 in colour as approved by Engineer-in-Charge, fixed-core type with removable filter frame (to accept G2/G3 grade washable synthetic filter media), with concealed fixing arrangement and peripheral gasket. For double-height hall ducted system — matching return air capacity for proper air circulation. Including all fixing hardware, airtight seal between grille frame and duct/plenum, filter media (first set), and all accessories complete in all respects as per CPWD specifications.Size: 600×600 mm or equivalent face area as per approved HVAC drawings. Measurement: face area in sq.m. |
| 25 | Supplying, installation, testing and commissioning of fire dampers — minimum 2-hour fire rated (tested and certified to BS 476 Part 20 or IS:3614 or UL 555), comprising galvanised steel casing/frame of minimum 1.6 mm thickness, interlocking steel blades, fusible link (72°C rated), blade pivot bearings, integral duct collar/sleeve for installation in wall/slab opening, and access/inspection arrangement (access door on duct side). Damper body only under this item — actuator covered separately in next item. Including installation sleeve through fire-rated wall/slab, fire-rated packing/sealant (intumescent type, min. 2-hour rating) around damper frame to fill annular gap between sleeve and wall/slab, duct connection flanges on both sides, and all accessories complete in all respects as per CPWD specifications and NBC 2016.Measurement: face area of damper opening in sq.m. |
| 26 | Supplying, installation, testing and commissioning of fire damper actuator — spring-return type motorised actuator for automatic closure of fire damper upon fire alarm signal and manual reset, suitable for 230V AC or 24V DC supply as per system design. Including actuator mounting bracket, linkage to damper blade mechanism, power supply wiring from nearest junction box to actuator (maximum 10 m), interface relay for fire alarm panel connection, end-of-line supervision if required by fire alarm system, functional testing with fire alarm panel, and all control/power accessories complete in all respects.For 6 nos. fire dampers at fire-compartment boundaries. |
| 27 | Painting with synthetic enamel paint of approved brand and manufacture (conforming to IS:2932) to give an even shade on all exposed flat-oval (elliptical) GI ductwork in double-height reading hall: including thorough cleaning and degreasing of GI surface, one coat of zinc-chromate/etch primer suitable for galvanised surfaces (conforming to IS:104), and two or more coats of synthetic enamel paint to achieve uniform, opaque coverage. Colour as directed by the Architect/Engineer-in-Charge. Including painting of all visible duct hangers, support rods, and trapeze members in the exposed zone. Complete in all respects..Measurement: developed surface area of exposed ductwork in sq.m — 180 sq.m. |
| 28 | Supplying and fixing of acoustic lining of supply air duct and plenum with 25 mm thick resin-bonded glass wool having density of 32 kg/m³, with 25 mm × 25 mm GI section of 1.25 mm thick at 600 mm centre to centre, covered with reinforced plastic tissue paper and 0.5 mm thick perforated aluminium sheet, fixed to inside surface of ducts with cadmium-plated nuts, bolts, stick pins, CPRX compound, in conformity with SMACNA/IS and as per CPWD specifications, complete in all respects as required. Glass wool shall conform to IS:8183 and shall have minimum NRC of 0.75. Including all cutting, fitting around internal stiffeners, sealing at edges to prevent fibre erosion, and restoration after any site modification.For supply air duct near diffusers in double-height hall reading area for NC-30 noise compliance — 50 sq.m. |
| 29 | Supply and charging of additional R-410A refrigerant gas (conforming to AHRI 700) beyond factory pre-charge of outdoor units, required for extended refrigerant piping runs from terrace-level ODUs to ground-floor and first-floor indoor units. Including calibrated weighing of refrigerant charge using electronic refrigerant scale, verification of sub-cooling and super-heat values at each outdoor unit after charging to confirm correct system charge, electronic leak detection at all service valve connections, and recording of final charge quantity for each ODU in the commissioning report.Quantity: provisional — actual quantity to be determined based on as-built pipe lengths and manufacturer's charging charts. Measurement and payment on actual weight (kg) consumed. — 15 kg (provisional). |
| 30 | Laying of one number PVC insulated and PVC sheathed / XLPE insulated power cable of 1.1 kV grade, above 95 sq.mm and up to 185 sq.mm size (specifically 3.5-core × 120 sq.mm aluminium conductor, XLPE insulated, steel wire/strip armoured, 1.1 kV grade conforming to IS:7098 Part-1), direct in ground including excavation of trench to required depth (minimum 750 mm below finished ground level), 75 mm thick sand cushioning below and above cable, protective covering with burnt clay brick tiles laid flat, danger/route marker tape, backfilling the trench with excavated earth in 150 mm layers with compaction, reinstatement of road/pathway surface if applicable, and all incidentals etc. as required and as per CPWD specifications, complete in all respects. (CABLE LAYING ONLY — cable supply covered separately under Item 1A.)Route: from main college electrical panel to HVAC plant room/panel — approximately 260 Rmt. |
| 31 | Supply of 3.5-core × 120 sq.mm aluminium conductor, XLPE insulated, galvanised steel wire/strip armoured, PVC outer-sheathed, 1.1 kV grade power cable conforming to IS:7098 Part-1, of approved make (from CPWD approved list). Cable shall bear BIS certification mark (ISI mark). Including transportation to site, proper storage on cable drums protected from weather, and all wastage allowance.Rate as per CPWD DSR Appendix-II material rates or non-standard rate analysis based on minimum 3 manufacturer quotations. *PROVISIONAL — obtain and attach supplier quotation before tender.260 Rmt. |
| 32 | Supplying and fixing of cable end termination kit for 3.5-core × 120 sq.mm aluminium XLPE insulated, armoured, 1.1 kV grade power cable, comprising heat-shrink or cold-shrink indoor/outdoor type termination (as applicable to location), copper/aluminium compression-type cable lugs of appropriate palm size for panel busbar connection, cable gland (double compression, brass/nickel-plated, IP-68 rated for outdoor/underground entry), gland plate/adapter if required, armouring earthing tag with earth lead, PVC insulation tape and heat-shrink sleeves for phase identification, and all accessories complete in all respects as per IS:1255 and manufacturer's instructions.At both ends: college main panel side and HVAC distribution panel side — 2 sets. |
| 33 | Supplying, installation, testing and commissioning of Main HVAC Electrical Distribution Panel — floor-standing/wall-mounted type, IP-54 rated enclosure (minimum 2 mm CRCA sheet, powder-coated RAL 7035) with gasketed door, padlockable handle, cable entry from bottom with removable gland plate. Internal arrangement comprising:• Incomer: 100A 4-pole MCCB (25 kA breaking capacity at 415V) with shunt-trip release for emergency shutdown;• Outgoing feeders: 2 nos. 63A 4-pole MCCB for ODUs, 1 no. 32A 4-pole MCB for ERV, 2 nos. 32A 4-pole MCB for ducted IDUs, 1 no. 63A 4-pole MCCB for cassette IDU distribution, 2 nos. spare outgoing ways with blanking plates;• Busbar: Electrolytic grade copper, rated for incomer capacity with 20% spare margin;• Metering: Digital multi-function meter (V, A, kW, kWh, PF) on incomer;• Indications: R-Y-B phase indication lamps, mains ON/OFF lamp;• Internal copper wiring for all control and power circuits;• Earth bar (copper, tinned) with adequate terminals for all incoming and outgoing earth conductors;• Danger plate (IS:2551), circuit identification labels, SLD pasted inside door;• Surge protection device (Type-2) mounting space if not covered in separate item.All complete in all respects as per IS:8623, IS:13947, and CPWD specifications. — 1 no. |
| 34 | Supplying, installation, testing and commissioning of Type-2 Surge Protection Device (SPD) — 3-pole + neutral (3P+N), maximum discharge current 40 kA (8/20 μs waveform), voltage protection level (Up) not exceeding 1.5 kV at nominal discharge current, conforming to IS/IEC 61643-11, with visual status indicator (green/red window), remote signalling contact for BMS/alarm, and DIN-rail mounting arrangement. Including backup fuse/MCB if not already provided in HVAC panel, copper connection leads from panel busbar to SPD terminals (minimum 16 sq.mm for phase and neutral, minimum 6 sq.mm for earth), and all accessories complete in all respects.For protection of VRF outdoor and indoor unit electronics against lightning and switching surges. — 1 no. |
| 35 | Wiring for circuit/sub-main wiring along with earth wire with 4 × 16 sq.mm + 2 × 6 sq.mm earth wire, FRLS (Fire Retardant Low Smoke) / HFFR PVC insulated copper conductor, single-core cable conforming to IS:694 (with BIS certification), in surface/recessed heavy-gauge steel conduit (minimum 2 mm wall thickness, hot-dip galvanised conforming to IS:9537 Part-2) as required. Including all conduit accessories (bends, tees, junction boxes, inspection elbows, couplings), saddle clamps at 600 mm centres, earthing of conduit system with earth continuity conductor, draw wire in spare conduits, and all accessories as per CPWD specifications, complete in all respects.From HVAC distribution panel to outdoor units on terrace — 30 Rmt. |
| 36 | Wiring for circuit/sub-main wiring along with earth wire with 2 × 2.5 sq.mm + 1 × 2.5 sq.mm earth wire, FRLS (Fire Retardant Low Smoke) / HFFR PVC insulated copper conductor, single-core cable conforming to IS:694 (with BIS certification), in surface/recessed medium-class PVC conduit (conforming to IS:9537 Part-3) as required. Including all conduit accessories (bends, tees, junction boxes, inspection elbows, couplings), saddle clamps at 600 mm centres, pull/draw wire in spare conduits, and all accessories as per CPWD specifications, complete in all respects.For power supply circuit to all indoor units: cassette IDUs (15 nos.), ducted IDUs (2 nos.), and ERV (1 no.) |
| 37 | Supplying and laying of control/communication wiring — 2-core × 1.5 sq.mm FRLS (Fire Retardant Low Smoke) multicore shielded communication cable (with drain wire and overall aluminium-mylar foil shielding), in surface/recessed PVC conduit (medium class, conforming to IS:9537 Part-3). Cable shall be of type recommended by VRF system manufacturer for inter-unit communication. Including all conduit accessories (bends, junction boxes, couplings), cable identification tags/ferrules at each termination point, termination at ODU, IDU, and central controller communication ports as per manufacturer's wiring diagram, separation from power cables by minimum 150 mm or in separate conduit runs, shielding earthed at one end only (as per manufacturer's instruction), and all accessories as per CPWD specifications, complete in all respects.For VRF communication bus between ODU ↔ IDU ↔ Central Controller. |
| 38 | Supplying and laying 25 mm × 5 mm G.I. strip at 0.50 metre below ground as strip earth electrode, including connection/terminating with G.I. nut, bolt, spring washer etc. as required. Jointing shall be done by overlapping and with 2 sets of G.I. nut bolt and spring washer spaced at 50 mm. Including excavation of trench, laying on bed of coke/charcoal and salt mixture where specified, backfilling and compaction, and all accessories as per CPWD specifications and IS:3043, complete in all respects. |
| 39 | Supplying, installation, testing and commissioning of maintenance-free chemical earthing system, complete with 80 mm dia × 3000 mm long copper-bonded steel earth electrode (minimum 250 microns copper coating, conforming to UL 467 / IS:3043), special backfill compound (low-resistivity earthing compound — bentonite/graphite-based, minimum 50 kg per pit), CI/RCC inspection chamber with CI cover and frame (minimum 300 × 300 mm clear opening) at ground level, HDPE/GI watering pipe for periodic maintenance, 25 mm × 5 mm GI strip connection from electrode top to ground-level strip electrode/panel earth bar with bolted/brazed joint, funnel arrangement for water charging, and all excavation, backfilling, testing (earth resistance measurement with calibrated earth tester — target ≤2 ohms per electrode), and all accessories as per CPWD specifications and IS:3043, complete in all respects. |
| 40 | Providing and fixing 25 mm × 5 mm G.I. strip on surface or in recess for earth connections from earth electrode to HVAC distribution panel earth bar, and from panel earth bar to each outdoor unit on terrace, including all connections with G.I./brass bolts, nuts, spring washers, saddle/cleat fixings at maximum 1.0 m centres, protective PVC sleeve where passing through walls, painting with green/yellow identification stripes as per IS:3043, and all accessories as per CPWD specifications, complete in all respects. |
| 41 | Supplying, installation, testing and commissioning of local isolator/disconnect switch — 63A, 4-pole, enclosed in IP-65 rated weather-proof enclosure (CRCA/polycarbonate) with padlock provision for lockout-tagout (LOTO), suitable for 415V 3-phase AC supply. Including MS hot-dip galvanised wall/floor mounting bracket, cable entry glands (IP-68 rated), internal copper wiring from glands to switch terminals, cable identification ferrules, earth terminal, 'DANGER — HIGH VOLTAGE' and equipment identification labels, and all accessories as per IS:732 and CPWD specifications, complete in all respects.For maintenance isolation of each outdoor unit on terrace — 2 nos. |
| 42 | Providing and laying in position ready-mixed or site-batched design-mix cement concrete for reinforced cement concrete work, using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana / Ordinary Portland / Portland Slag cement, admixtures in recommended proportions as per IS:9103 to accelerate/retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing for minimum 7 days by ponding or wet hessian covering, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement — as per direction of the Engineer-in-Charge. All work above plinth level. Concrete of M-25 grade with minimum cement content of 330 kg/cum.For equipment base pad on existing terrace slab for ODU/AHU room (approximately 4.5 m × 3.5 m × 150 mm thick) — 2.4 Cum. |
| 43 | Providing and laying in position ready-mixed or site-batched design-mix cement concrete for reinforced cement concrete work, using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana / Ordinary Portland / Portland Slag cement, admixtures in recommended proportions as per IS:9103 to accelerate/retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing for minimum 7 days by ponding or wet hessian covering, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement — as per direction of the Engineer-in-Charge. All work above plinth level. Concrete of M-25 grade with minimum cement content of 330 kg/cum.For equipment base pad on existing terrace slab for ODU/AHU room (approximately 4.5 m × 3.5 m × 150 mm thick) — 2.4 Cum. |
| 44 | Centering and shuttering including strutting, propping etc. and removal of form for: Edges of slabs and breaks in floors and walls — under 20 cm wide. Including cost of all materials (formwork plywood/steel plates, props, wedges, nails), application of de-moulding agent, and making good any surface defects after removal. Complete in all respects as per CPWD specifications.For edge shuttering of 150 mm thick equipment base pad on terrace — 16 Rmt. |
| 45 | Structural steel work in single sections, fixed with or without connecting plates, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, all complete. Including cost of connecting plates, cleats, brackets, gusset plates, bolts and nuts (HSFG/ordinary as specified), washers, welding (all site welding to be carried out by certified welder), grinding of welds, and all wastage. Steel sections conforming to IS:2062 (Grade E250/E350 as specified). Rate includes first coat of approved red-oxide zinc chromate primer applied on all surfaces.For AHU/ODU room framework on terrace — columns, beams, purlins, bracings, knee braces, base plates with anchor bolts — 800 kg. |
| 46 | Providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-Charge) of total coated thickness 0.50 mm (base metal of minimum 0.45 mm thickness with total coating thickness of 0.05 mm) with zinc coating 120 grams per sq.m as per IS:277, in 240 MPa steel grade, 5–7 microns epoxy primer on both sides of the sheet and polyester top coat 15–18 microns. Sheet should have protective guard film of 25 microns minimum to avoid scratches during transportation and should be supplied in single length up to 12 metre or as desired by Engineer-in-Charge. The sheet shall be fixed using self-drilling/self-tapping screws of size 5.5 × 55 mm with EPDM seal, complete up to any pitch in horizontal/vertical or curved surfaces, excluding the cost of purlins, rafters and trusses, and including cutting to size and shape wherever required, complete in all respects as per CPWD specifications.For walls and roof of AHU/ODU room on terrace — 60 sq.m. Colour as approved by Architect. |
| 47 | Providing and fixing precoated galvanised steel sheet roofing accessories of total coated thickness 0.50 mm (base metal of minimum 0.45 mm thickness with total coating thickness of 0.05 mm) with zinc coating 120 grams per sq.m as per IS:277, in 240 MPa steel grade, 5–7 microns epoxy primer on both sides and polyester top coat 15–18 microns, using self-drilling/self-tapping screws, complete: Ridges plain (500–600 mm wide), including overlap sealant strip and all fixing hardware.For AHU/ODU room roof ridge — 5 Metre. |
| 48 | Providing and fixing precoated galvanised steel sheet roofing accessories of total coated thickness 0.50 mm (base metal of minimum 0.45 mm thickness with total coating thickness of 0.05 mm) with zinc coating 120 grams per sq.m as per IS:277, in 240 MPa steel grade, 5–7 microns epoxy primer on both sides and polyester top coat 15–18 microns, using self-drilling/self-tapping screws, complete: Flashings/Aprons (up to 600 mm wide), including overlap sealant strip and all fixing hardware.At wall-roof junctions of AHU/ODU room — 14 Metre. |
| 49 | Providing and fixing 1 mm thick M.S. sheet door with frame of 40 × 40 × 6 mm angle iron and 3 mm M.S. gusset plates at the junctions and corners, all necessary fittings complete, including applying a priming coat of approved steel primer. Single leaf. Using M.S. angles 40 × 40 × 6 mm for diagonal braces. Including cost of hinges (100 mm heavy-duty butt hinges — 3 nos.), tower bolt (300 mm — 1 no.), door handle (150 mm — 1 no.), aldrop (300 mm — 1 no.), pad-lock hasp and staple, weather strip/gasket seal at perimeter, and all hardware as per CPWD specifications, complete in all respects.Size: 900 × 2100 mm for AHU/ODU room access — 1.89 sq.m. |
| 50 | Providing and fixing galvanised iron louvers for ventilation of approved design (fixed chevron/inverted-V blade type, 75–100 mm blade pitch, minimum 0.8 mm GI sheet for blades, minimum 1.6 mm GI sheet for frame), including bird/insect mesh (GI woven wire mesh — 12 mm × 12 mm aperture) on inner face, all necessary self-tapping screws, bolts, and expansion fasteners for fixing to masonry/steel frame, one coat zinc-chromate primer and two coats synthetic enamel paint to match AHU room colour scheme. Complete in all respects.For AHU/ODU room ventilation openings to ensure adequate airflow for condenser heat rejection. |
| 51 | Providing and applying polymer-modified flexible cementitious negative/positive-side waterproofing coating with elastic waterproofing polymers, comprising: scraping and properly cleaning the surface to remove pre-existing paint film, loose particles, laitance and contaminants till sound substrate is visible; one coat of self-priming cementitious waterproofing polymer (dilution with water in ratio 1:1); and two coats of cementitious waterproofing polymer (dilution with water in ratio 3:1) at total consumption of 14.35 kg per 10 sq.m; complete in all respects as per the direction of the Engineer-in-Charge. Including treatment of all construction joints, pipe/conduit penetrations, and junction with existing terrace waterproofing membrane — ensuring continuity of waterproof barrier. Minimum 24-hour curing between coats.On terrace around AHU/ODU room base pad and at all junctions with existing terrace waterproofing — 25 sq.m. |
| 52 | Painting with synthetic enamel paint of approved brand and manufacture (conforming to IS:2932) to give an even shade: Two or more coats on new work. Including cleaning, preparation of surface, and applying coats until even coverage is achieved. Colour as directed by Architect/Engineer-in-Charge.For all exposed steelwork (columns, beams, purlins, bracings, base plates) of AHU/ODU room on terrace — 80 sq.m. |
| 53 | Core cutting through reinforced cement concrete slabs and beams: diamond core cutting using water-cooled diamond core drill machine through RCC of any thickness up to 300 mm, for pipe/duct/cable penetrations of 75 mm to 100 mm diameter. Including marking and approval of cutting location by structural engineer, setting up and securing core drill rig, continuous water cooling and slurry management, extraction and disposal of concrete core, and cleaning of hole. The contractor shall verify location of existing reinforcement using rebar detector/cover meter before cutting and shall not cut through main structural reinforcement without prior written approval of the structural engineer. Including making good any surface damage around the core-cut hole. |
| 54 | Core cutting through reinforced cement concrete slabs and beams: diamond core cutting using water-cooled diamond core drill machine through RCC of any thickness up to 300 mm, for larger pipe/duct penetrations of 150 mm to 200 mm diameter. Including marking and approval of cutting location by structural engineer, setting up and securing core drill rig, continuous water cooling and slurry management, extraction and disposal of concrete core, and cleaning of hole. The contractor shall verify location of existing reinforcement using rebar detector/cover meter before cutting and shall not cut through main structural reinforcement without prior written approval of the structural engineer. Including making good any surface damage around the core-cut hole. |
| 55 | Cutting holes up to 30 × 30 cm in brick masonry walls including making good the same: with common burnt clay F.P.S. (non-modular) bricks in cement mortar 1:4, including plastering the repaired area to match existing finish, and all incidentals as per CPWD specifications, complete in all respects.For horizontal pipe/cable tray runs passing through internal brick masonry walls — 25 nos. |
| 56 | Cutting holes up to 15 × 15 cm in R.C.C. floors and roofs for passing drain pipe, refrigerant piping, cable conduit etc. and repairing the hole after insertion of pipe etc. with cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size), including finishing complete so as to make it leak-proof. Including waterproof sealant application at repaired location where hole is in roof slab/wet area, and all incidentals as per CPWD specifications, complete in all respects. |
| 57 | Providing and fixing MS sleeve pipes at all pipe/cable penetrations through fire-rated walls, slabs and beams: MS pipe sleeve of 75 mm to 150 mm internal diameter, 3 mm minimum wall thickness (conforming to IS:1239 or IS:3589), cut to length equal to wall/slab thickness plus 25 mm projection on each face. Including packing of annular space between service pipe/cable and sleeve with mineral wool (density 48 kg/m³ minimum) to full depth, and sealing both faces with intumescent fire sealant/mastic (tested and certified to BS 476 Part 20 or equivalent, minimum 2-hour fire rating, UL listed or equivalent certification). Sleeve to be painted with one coat red-oxide primer. Including all cutting, welding of sleeve to embedded plate if required, and all accessories as per NBC 2016, complete in all respects. — 50 nos. |
| 58 | 12 mm cement plaster of mix 1:4 (1 cement : 4 coarse sand) for making good wall and ceiling surfaces around core-cut holes, sleeve installations, and hole-cutting locations. Including hacking of existing plaster to provide key, wetting the surface before application, proper curing for minimum 7 days, and finishing to match existing adjacent plaster surface, complete in all respects as per CPWD specifications. |
| 59 | Providing and applying non-shrink cementitious grouting compound (conforming to ASTM C1107 or equivalent, minimum compressive strength 40 MPa at 28 days) for sealing gaps around sleeves and penetrations after pipe/cable installation. Including mixing as per manufacturer's instructions, pouring/packing into gaps, finishing flush with surrounding surface, curing, and cleaning of surplus material. Rate includes cost of grouting compound, mixing equipment, and all labour. |
| 60 | Supplying and installation of 300 mm width × 50 mm depth × 1.6 mm thickness perforated mild steel cable tray with powder coating (minimum 60 microns polyester powder coat), with perforation not more than 17.5%, in convenient sections, joined with connectors (splice plates with minimum 4 nos. bolts per joint), suspended from ceiling with two numbers MS/GI suspenders (threaded rods minimum 8 mm dia with channel/angle base) of suitable size, MS/GI angle brackets, bolts and nuts, painting of suspenders, fasteners etc. as required. Including all bends (horizontal and vertical), tees, reducers, risers, end plates, earth bonding jumper across each joint, and all accessories as per CPWD specifications, complete in all respects.For main/common routing of power and control cables from HVAC panel to indoor and outdoor units — 120 Rmt. |
| 61 | Supplying and fixing of cable tray wall/ceiling mounting brackets — MS hot-dip galvanised (minimum 86 microns zinc coating as per IS:2629) cantilever brackets and/or threaded rod (minimum 8 mm dia) ceiling hangers with channel/angle trapeze supports, at maximum 1.5 m centre to centre along cable tray run. Including all expansion anchors/fasteners (stainless steel or galvanised), base plates, all bolts/nuts/washers, and any additional strengthening for ceiling-mounted arrangements in false ceiling voids, complete in all respects. |
| 62 | Supplying and fixing of MS pipe clamps and supports — hot-dip galvanised (minimum 86 microns zinc coating as per IS:2629), split-ring type with rubber lining (minimum 3 mm EPDM/neoprene) to prevent copper-to-steel galvanic contact, for supporting copper refrigerant pipes. Various sizes from 12 mm to 35 mm internal diameter to suit all refrigerant pipe sizes in the project. Clamps to be fixed at maximum 1.2 m centres (1.0 m centres for vertical runs) using threaded rod hangers from ceiling/slab or wall brackets as per routing. Including all threaded rods, ceiling anchors, wall plugs, bolts, nuts, washers, and any channel/angle support framing for grouped pipe runs, complete in all respects. |
| 63 | Providing and fixing UPVC drainage pipe — ISI marked, Type-A (conforming to IS:4985), 75 mm nominal bore, complete with all UPVC fittings (elbows, tees, couplings, reducers, clean-out plugs) jointed with solvent cement conforming to IS:9271. For condensate header/collection piping. Pipe shall be laid with minimum continuous fall of 1:100 (1%). Including pipe clamps/saddles (PVC/MS galvanised) at maximum 1.2 m centres, 9 mm thick closed-cell nitrile rubber (Class 'O') tubular insulation with continuous vapour barrier on all piping running through conditioned spaces and false ceiling voids, pressure testing for leak-tightness, and all accessories complete in all respects. |
| 64 | Providing and fixing UPVC drainage pipe — ISI marked, Type-A (conforming to IS:4985), 110 mm nominal bore, complete with all UPVC fittings (elbows, tees, couplings, reducers, clean-out plugs) jointed with solvent cement conforming to IS:9271. For main condensate drain header collecting from all 75 mm branch headers. Pipe shall be laid with minimum continuous fall of 1:100 (1%). Including pipe clamps/saddles (PVC/MS galvanised) at maximum 1.5 m centres, 9 mm thick closed-cell nitrile rubber (Class 'O') tubular insulation with continuous vapour barrier on all piping running through conditioned spaces and false ceiling voids, pressure testing for leak-tightness, and all accessories complete in all respects. |
| 65 | Providing and fixing floor traps/funnel receivers — CI (cast iron conforming to IS:3989) or heavy-duty PVC, with removable grating/jali (stainless steel or CI), integral water seal (minimum 50 mm), at each condensate drain termination/discharge point. Including necessary PVC/CI short pipe connection from condensate header to floor trap inlet, cement concrete bedding (1:2:4) for CI traps, connection to building drainage system, and all accessories complete in all respects. |
| 66 | Providing and fixing mineral fibre false ceiling tiles at all heights, of size 595 × 595 mm, of approved texture, design and pattern. Tiles shall have: Humidity Resistance (RH) of 99%, Light Reflectance ≥85%, Thermal Conductivity k = 0.052–0.057 W/mK, Fire Performance as per BS 476 Part 6 and Part 7. With 16 mm thick beveled tegular mineral fibre tile (NRC 0.55 to 0.60). In true horizontal level, suspended on interlocking T-grid of hot-dipped all-round galvanised iron section of 0.33 mm thick (galvanised at 120 gsm) comprising main T-runners of 15 × 32 mm of length 3000 mm, cross-T of size 15 × 32 mm of length 1200 mm, and secondary intermediate cross-T of size 15 × 32 mm of length 600 mm, to form grid module of 600 × 600 mm. Suspended from ceiling using galvanised mild steel (galvanised at 80 gsm) — 50 mm long, 8 mm outer diameter M-6 dash fasteners; 6 mm diameter fully-threaded hanger rod up to 1000 mm length; and L-shape level adjuster of size 85 × 25 × 2 mm, spaced at 1200 mm centre to centre along main T. System shall rest on periphery walls/partitions with GI perimeter wall angle. Including all cutting to size around columns, walls, services penetrations, provision of openings for light fixtures, diffusers, grilles, access panels, and all accessories as per CPWD specifications, complete in all respects. |
| 67 | Providing and fixing false ceiling with 12.5 mm thick tapered-edge gypsum plaster board conforming to IS:2095 Part-1:2011 (board with BIS certification marks), on concealed GI metal frame system comprising GI perimeter channel (0.55 mm thick) fixed to walls with nylon sleeves at 610 mm c/c, GI ceiling sections/furring channels (0.55 mm thick) suspended from ceiling slab using GI threaded rods and cleat angles at 1200 mm c/c (maximum), and cross-channels at 410 mm c/c. Board fixed to GI frame with 25 mm countersunk ribbed-head self-tapping drywall screws at 200 mm c/c. All joints finished with specially formulated jointing compound and 48 mm wide paper jointing tape to provide seamless Level-4 finish (as per GA-214 standards). Including one coat primer and two coats acrylic emulsion paint of approved brand to achieve uniform finish, all cutting around services/columns, provision of openings for light fixtures, AC cassette units, access panels, and all accessories as per CPWD specifications, complete in all respects. |
| 68 | Providing and fixing aluminium-framed hinged access panels of size 600 × 600 mm (clear opening) in false ceiling, for maintenance access to concealed HVAC equipment, valves, dampers, filters and junction boxes. Panel frame shall be extruded aluminium (minimum 1.2 mm thick), with concealed piano/barrel hinge, magnetic or spring-loaded latch for secure closure, gasket seal to prevent air leakage, and infill panel to match surrounding ceiling tile/board (mineral fibre tile for grid ceiling areas; gypsum board with finish to match for gypsum ceiling areas). Including all necessary framing reinforcement in ceiling grid/GI framework to support access panel, and all accessories complete in all respects. |
| 69 | Providing and fixing powder-coated aluminium louver screening (fixed type) around outdoor units on terrace for visual screening while maintaining adequate airflow for condenser heat rejection. Louvers: extruded aluminium blades of minimum 1.5 mm thickness, 75 mm blade pitch, angled at 45° to prevent direct line of sight while permitting free airflow (minimum 50% free area). Framework: MS post frame (minimum 50 × 50 × 3 mm MS square tube, hot-dip galvanised after fabrication), base plates with anchor bolts fixed to terrace pad, horizontal rails for louver panel mounting. Height: 1.8 m from finished terrace level. Louvers to be set back minimum 600 mm from ODU condenser face to prevent short-circuiting of condenser airflow. Polyester powder coat finish (minimum 60 microns) on all aluminium and MS components, colour as approved by Architect. Including all fixing hardware, touch-up paint on site-drilled holes, and all accessories complete in all respects. |
| 70 | 12 mm cement plaster of mix 1:4 (1 cement : 4 coarse sand) for making good wall and ceiling surfaces along pipe/cable chases and at support bracket fixing points. Including hacking of existing loose plaster to provide key, wetting the surface before application, proper curing for minimum 7 days, finishing to match existing adjacent plaster surface, and all incidentals as per CPWD specifications, complete in all respects. |
| 71 | Distempering with 1st quality acrylic distemper (ready mixed) having VOC (Volatile Organic Compound) content less than 50 grams/litre, of approved brand and manufacturer, including applying additional coats wherever required to achieve even shade and colour — on old work. Including cleaning and preparation of surface, removal of loose/flaking distemper, filling minor cracks with putty/filler, rubbing smooth, and all incidentals as per CPWD specifications, complete in all respects. |
| 72 | Painting with synthetic enamel paint of approved brand and manufacture (conforming to IS:2932) to give an even shade: Two or more coats on new work. Including cleaning, preparation of surface, and applying coats until even coverage is achieved. Colour as directed by Architect/Engineer-in-Charge. |
| 73 | Applying priming coat with ready mixed red oxide zinc chromate primer of approved brand and manufacture on steel/galvanised iron/steel works, conforming to IS:2074. Including cleaning of surface to remove all rust, scale, oil, grease and other contaminants (wire brushing/scraping to Sa-2 standard minimum), and application of one coat primer to all surfaces before application of finish paint, complete in all respects as per CPWD specifications. |
| 74 | Removal, loading, transportation and disposal of all construction debris, malba, packing material, cut pieces of pipe/conduit/cable/duct, concrete rubble from core cutting, GI sheet off-cuts, and all waste material arising out of HVAC, electrical and associated civil works under this contract. Including sweeping, collection from all floors and terrace, loading into vehicles, transportation to approved municipal dump site/disposal location (all leads and lifts), and obtaining disposal receipt where required by local authority. Contractor to maintain clean working area throughout the contract period with daily clearing of debris from work zones. |
| 75 | Thorough cleaning of all rooms, corridors, terrace, stairways and surrounding areas after completion of all HVAC, electrical and associated civil works under this contract. Including removal of all dust, cement stains, paint marks, adhesive residues, and construction dirt from floors, walls, ceilings, false ceiling tiles/boards, glass surfaces, door frames, and all surfaces affected by the works. Including wet mopping/scrubbing of all floor areas, cleaning of all installed HVAC equipment exteriors (grilles, diffusers, cassette panels, ducting), cleaning of all electrical panels and fittings, and handing over the premises in a clean and ready-to-use condition to the satisfaction of the Engineer-in-Charge. Please Enable Macros to View BoQ information |
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