Construction of District Head Quarter office building for Excise and Taxation Department in Sector-19 Rewari in Distt Rewari(Pdg VRV system )

Amount

OUTDOOR UNITSupply Installation, Testing & Commissioning of modular type Variable Refrigerant Flow/Variable Refrigerant Volume air cooled Outdoor units suitable for cooling and heating, having all hermetically sealed inverter type Scroll Compressor(s), minimum two compressors for above 14 HP modules, microprocessor based Controller, top discharge type condensing unit(s), with R 410 A Refrigerant, vibration isolators, with suitable foundation etc. complete as required. The unit shall deliver the rated capacity at AHRI Conditions and work even at 50°C ambient temperature without tripping. The unit shall be suitable to work on 400V +/- 10%, 3 Phase, 50Hz AC power supply. The unit shall be filled with first charge of the refrigerant and ready for use as required. The ODU shall have low noise condenser fans with extrenal static pressure of the outdoor unit shall be more then 75 Pa to avoid hot air recirculation, auto address setting, auto check function for connection error and complete with indoor and outdoor units with individual controller and with fittings etc. The compressor and VRV/VRF Outdoor make should be same. For enhanced energy savings the COP of each refrigerant circuit system mentioned below shall be 7.10 minimum at 50% load, at AHRI Condition in cooling mode. The unit shall also have feature to automatically modulate the evaporative temperature between 6 deg C to 11 deg C with respect to load for better comfort and energy efficiency. The Unit should have free phase technology so that unit can work in case of phase reversal also without tripping of units. (Heat Pump)Makes - Daikin / Mitsubishi Electric / O General 22 HP

Anti Corrosion Treatment

Supply, installation, testing and commissioning of following minimum capacity 4-way/ round flow VRV/VRF Round Flow Sensing Cassette Type Indoor ceiling mounted unit equipped with synthetic washable media pre-filter, fan section with low noise fan/dynamically balanced blower, multispeed motor, coil section with DX copper coil, electronic expansion valve, outer cabinet, drain pan, drain pump, cassette grill, insulation, necessary supports, vibration isolation, corded remote control etc, suitable for operation on 230 V ± 10%, 50 Hz single phase AC supply, complete as required. All indoor Units should have force shut option to connect with fire alarm adaptor, so that the unit automatically stops in case or fire. The cooling capacity of indoor unit will be at air inlet conditions of 27 degree C DBT and 19 degree C WBT. All 4 louvers of the unit shall be independently adjustable for positiion as per user preference. The cassettes units shall also have dual sensors additionally which detect the presence of people and floor temperature to provide comfortable air- conditioning and energy saving. The multizone (minimum two) sensor should detects human presence and adjust the airflow direction automatically to prevent drafts. Room temperature should increase upto 4 deg C or switch off as required when no occupancy is detected (as per user preference). The other sensor should detect the floor temperature and automatically adjusts the airflow of the indoor unit to reduce the temperature difference between the ceiling and the floor. (Heat Pump) Makes - Daikin / Mitsubishi Electric / O General1.3 TR +- 5% Cassette Round Flow with Sensing Panel & wireless remote

1.6 TR +- 5% Cassette Round Flow with Sensing Panel & wireless remote

2.08 TR +- 5% Cassette Round Flow with Sensing Panel & wireless remote

3.3 TR +- 5% Cassette Round Flow with Sensing Panel & wireless remote

Ceiling Mounted Four Way Round Type Cassette Units :Supply, installation, testing and commissioning of following minimum capacity 4-way flow VRV/VRF Cassette Type Indoor ceiling mounted unit equipped with synthetic washable media pre-filter, fan section with low noise fan/dynamically balanced blower, multispeed motor, coil section with DX Copper coil, electronic expansion valve, outer cabinet, drain pump, grill, necessary supports, vibration isolation. suitable for operation on single phase 230 V ± 10%, 50Hz AC supply, complete, as required. The unit shall have automatic force shut down provision in case of fire on receiving signal from BMS System. The cooling capacity of indoor unit will be at air inlet conditions of 27 Degree C DB and 19 Degree C WB temperature.(Heat Pump) Makes - Daikin / Mitsubishi Electric / O General1.3 TR +- 5%

Treated Fresh Air handlimg Units with DX coil Supply, Installation, Testing and Commissioning of Treated Fresh Air Unit, Unit type: Floor Mounted TFA, DX Coil. Outer skin: 0.8 mm Pre- coated GI, Inner Skin: 0.8 mm Plain G.I Frame work: Thermal break Al profile with thermal barrier. Thickness of insulated panels: 43 mm thick, CFC Free PUF injected (Density: 40 kg / Cu. m.) Material of Drain pan: 22 G SS-304 Tray duly insulated with 13 mm closed cell Nitrile insulation. Unit Base: G.S.S Base Channel The face velocity across filter & coil has been considered 500 FPM.Fan outlet velocity up to 10 M/S.Motors should VFD compatible however VFDs are not in our scope of supply.Coil section with 6/8 row deep DX type cooling coil with single no. of distributor. Coil Casing / Blank off: GI , Material Of Tube: CopperFilter section with 25 mm thick (MERV-13) box type pre filter & 305 mm thick (MERV-8) flange type fine filter at combination with common GI filter frame.Fan section with Plug Fan outlet Dampers: Aluminium Low Leakage Dampers Makes - Citizen - Daikin / Flaktwood / Systemair6500 CFM, 32 TR, static pr 60 mm

Supply of following HVAC dedicated VFDs with IP 65 enclosures with Mains disconnect, complying with the tenderspecifications and having:1. active harmonic filters and accessories, required to limit THDi to 3% .2. built-in EMC Filters (electromagnetic compatibility filters) for for VFDs for restriction of conducted emissions to comply withIEC61800: 3 (unrestricted distribution):2004 Category C 3,3. Three-feedback PID controller having capability to simultaneously accept 3 feedback signals from temperature sensors or pressure sensors or CO2 sensors for process optimization and accordingly regulate the speed of the AHUs or pumps.4. Provision for additional 2 PID controllers to control external devices such as chilled water modulating valve, fresh air damper, etc. thus reducing the number of I/Os in DDC Controllers & improving system reliability.5. Automatic Energy Optimization / Load dependent flux optimization functionality for maximum energy savings.6. MODBUS RTU as the communication protocol between BMS & VFDs.7. VFDs not meeting above requirements shall provide external disconnect, external harmonic filters, additional external EMC Filters to comply with IEC61800: 3 (unrestricted distribution):2004 Category C 1 (50 m), external PLCs / DDCs to achieve 3Feedback PID Controller functionality and external devices controlling capabilities.

Expansion Kit, Communication PCB & Thermostat Supply, installation, testing and commissioning of Electronic Type Expansion Kit, Communication PCB with Sensors, Corded Self Diagnostic Type Digital Thermostat, Y-joints etc. as required Including all Taxes & Duties, Freight, Insurance etc. In INR.For VRF DX AHU Of Capacity 6500 CFM & 32 TR Refrigerantion Load

MAIN INTELLIGENT PROGRAMMABLE CENTRAL CONTROLLER:Supply, Installation, Testing and Commissioning of Central Controller of digital type of latest generation suitable for all VRV/VRF equipments/AHU to operate, Monitor, Scheduling Programme, On/Off, Temperature Setting etc as per specification complete as required to operate all the indoor units.Makes - Daikin / Mitsubishi Electric / O General

Supply Installation, testing, commissioning of supply & return Y-joints sets of required size for refrigerant piping as per manufacturer standards. Makes - Daikin / Mitsubishi Electric / O General

Fire free/ Brazing free gas tight joints for connecting copper piping. The joint shall have double sealing method ensuring secure joing under conditions of pressure upto 4.3 Mpa and temperature from -45 to 130 Deg C and shall be suitabe for R410A refigerant. The pull out resistance by leverage method shall be upto 17 Mpa6.4 mm Inner DiaMakes - Daikin / Mitsubishi Electric / O General

9.5 mm Inner Dia

12.7 mm Inner Dia

15.9 mm Inner Dia

19.1 mm Inner Dia

22.2 mm Inner Dia

28.6 mm Inner Dia

COPPER PIPES Supply& Fixing of Interconnecting copper refrigerant pipe work 19 mm / 13 mm thick between indoor and outdoor units as per specifications.Covered with cross linked closed cell Oxide Acetate Foam Thermal insulation on Copper pipe having density 0f 30 to 33 3 Kg/ M³ ,having K value 0.029 W/m ° K at 0°C Deg temp and temp range of -70°C to +100°C and fire rating Class O as per BS 476 Part 6 from CBRI,Roorkee as per the approved specifications. Smoke & Toxicity index of material shall be passed as per IMO MSC 307 ( 88 ) 2010 Anexx 1 Pt 2.• Material shall be CFC/ HCFC free as per US EPA 5021 A(2014 ). MAKE : Copper Pipes : Mexflow/Rajco/Jobu Insulation : Paramount/Trocellen/Thermobreak Fastner : Hilti/fisher06.35 mm with 13mm Oxide Acetate XLPE Insulation

09.52 mm with 13mm Oxide Acetate XLPE Insulation

12.70 mm with 13mm Oxide Acetate XLPE Insulation

15.88 mm with 13mm Oxide Acetate XLPE Insulation

19.05 mm with 13mm Oxide Acetate XLPE Insulation

22.22 mm with 19mm Oxide Acetate XLPE Insulation

25.40 mm with 19mm Oxide Acetate XLPE Insulation

28.58 mm with 19mm Oxide Acetate XLPE Insulation

31.80 mm with 19mm Oxide Acetate XLPE Insulation

34.92 mm with 19mm Oxide Acetate XLPE Insulation

38.50 mm with 19mm Oxide Acetate XLPE Insulation

41.30 mm with 19mm Oxide Acetate XLPE Insulation

Supply and installation of Lag Coating for Insulation that is mechanically protected with two layers (07 mil thick each layer) of green building compliance adhesive and Glass Cloth on following Rrefigerant pipes with InsualtionMAKE: Paramount / Pidilite06.35 mm with 13mm Oxide Acetate XLPE Insulation

09.52 mm with 13mm Oxide Acetate XLPE Insulation

12.70 mm with 13mm Oxide Acetate XLPE Insulation

15.88 mm with 13mm Oxide Acetate XLPE Insulation

19.05 mm with 13mm Oxide Acetate XLPE Insulation

22.22 mm with 19mm Oxide Acetate XLPE Insulation

25.40 mm with 19mm Oxide Acetate XLPE Insulation

28.58 mm with 19mm Oxide Acetate XLPE Insulation

31.80 mm with 19mm Oxide Acetate XLPE Insulation

34.92 mm with 19mm Oxide Acetate XLPE Insulation

38.50 mm with 19mm Oxide Acetate XLPE Insulation

41.30 mm with 19mm Oxide Acetate XLPE Insulation

CONTROL & TRANSMISSION CABLESupply, installation, testing & commissioning of transmission cabling between indoor & outdoor in PVC Conduit as per approved make2 C x 1.5 sq.mm Cable with PVC heavy Conduit

3 C x 2.5 sq.mm Cable with PVC heavy Conduit

4 C x 1.5 sq.mm Cable with PVC heavy Conduit

DRAIN PIPINGMAKE : Drain Pipes : Supreme, Prince, FinolaxInsulation : Paramount/ Trocellen/ ThermobreakSupply, Installation, Testing and Commissioning of uPVC pipes of 6kg/sqm2 presure rating cut to required lengths and installed for condensate drain. Quoted price shall be inclusive of supply and fixing in position the necessary fittings like elbows, tees reducers etc., and supporting arrangement in accordance with the approved shop drawings and specifications. Pipes shall be insulated with 9mm thick Oxide Acetate XLPE insulation with and density 40-60 Kg/CUM in tubing form . Pipes shall be of following sizes mechanically protected with two layers (07 mil thick each layer) of green building compliance adhesive and Glass Cloth on following Rrefigerant pipes with Insualtion25mm

CABLE TRAY FOR REFRIGERANT PIPESSupply, installation, testing & Commissioning of Plain GI Cable tray with perforation for protection of refrigerant pipes exposed to environment. Pedestel to provided by civil agency.As per aprroved make300 mm (w) x 75 mm (d) x 1.6 mm (t)

GI Plain Cover for Above Tray

Factory Fabricated DuctSupplying, installation,balancing and commissioning of machine fabricated GSS sheet metal rectangular ducting as per SMACNA Standrads of following Guages24 Gauge GSS Duct

22 Gauge GSS Duct

AIR REGISTERSMAKE: SYSTEMAIR/RUSKIN TITUS/TROXSupplying & fixing of powder coated extruded aluminium air registers (grills/Diffusers) as per specifications.

Supplying & fixing of powder coated extruded aluminium Collar Dampers for Air Registers as per specifications.

Supply, installation, testing and commissioning of GI volume control duct damper of G.I. Sheet with Linkages Quadrants damper should have 20G Blade and 22 gauge frame.

Supply, installation and testing of Aluminium exhaust air louvers with bird screen for Fresh air intake or exhaust Air.(Minimum Area to be considered is 0.1sqm)

Supply, Installation, testing & commissioning of Constant Airflow Regulator. CAR shall have regulation mechanism with a stainless steel spring and a silicone membrane.CAR shall have a tool-free airflow setting mechanism. CAR shall be classified UL 2043, CAR shall have a temperature range for use from -10° to 60°C. MAKE : Aldes/Trox50 CFM

Supply, Installation, testing & commissioning of Spigot DampersMakes - Systemair / Trox / Ruskin100 mm

CANVASS CONNECTIONMAKE: EASYFLEX/SHPERE/AIRFLOWSupply, Installation, Testing of 125mm deep antivibration flexible joints at the outlet of air handling units/ductable split units//inline fans. Flexible connections shall be constructed using imported fire retardant fabric with extruded aluminium frame/flange on both sides.

Acoustic Insulation on DuctSupply and installation of cross linked open cell acco isolate acoustic insulation for duct & AHU k having density of 30 to 55 Kg/ M³ ,having K value 0.029 W/m ° K at 0°C Deg temp and temp range of -70°C to +100°C and fire rating Class O as per BS 476 Part 6 from CBRI,Roorkee as per the approved specifications. Smoke & Toxicity index of material shall be passed as per IMO MSC 307 ( 88 ) 2010 Anexx 1 Pt 2.• Material shall be CFC/ HCFC free as per US EPA 5021 A(2014 ). Makes - Paramount / Trocellen / Thermobreak 15mm thick acco isolate acoustic open cell insulation on one side for Duct acoustic insulation

Thermal Insulation on DuctSupply and installation of cross linked closed cell Oxide Acetate Foam Thermal insulation on ducts having density 0f 30 to 33 Kg/ M³ ,having K value 0.029 W/m ° K at 0°C Deg temp and temp range of -70°C to +100°C and fire rating Class O as per BS 476 Part 6 from CBRI,Roorkee as per the approved specifications. Smoke & Toxicity index of material shall be passed as per IMO MSC 307 ( 88 ) 2010 Anexx 1 Pt 2.• Material shall be CFC/ HCFC free as per US EPA 5021 A(2014 ).The above insulation shall be covered with 7 mil glass cloth and 2 coat of UV protection paint shall be applied on the same.Makes - Paramount / Trocellen / Thermobreak 16 mm with Fibreglass and UV coating for ducts exposed to environment

16 mm with factory laminated Aluminum Foil for internal ducts

ELECTRICAL PANEL Design, fabrication, supply, installation, testing and commissioning of LT Panel / Sub-distribution panels fabricated out of 2mm thick for structural members and 1.6mm thick for door and covers CRCA sheet in cubicle compartmentalize free standing floor mounted, dust and vermin proof Cable gland plates shall be provided on top as well as at the bottom of the panels. Panels shall be treated with all anticorrosive process before painting as per specifications 2 Nos. earthing terminals shall be provided for all distribution panels. Panels shall be suitable for 415V, 3-phase, 4-wire, 50Hz supply system and lifting hooks shall also be provided in case of large panels. Degree of ingress protection of IP-54. This panel shall be Type tested assembly panel Make: Advance/Tricolite/RR Controls/AdlecODU Panel at TerraceINCOMERMain incomer 1no. 1000A TPN MCCB ( 35 kA) terminal suitable cable connection on one side and Busbar connection on the other side. Floor cum Wall mountedBUSBAR1200A TPN busbar of suitable length with Aluminium busbars. All busbars and interconnections shall be of suitable size aluminium strips current density of aluminium shall not be more than 0.8 Amps/ sq.mm provide 100% capacity for neutral bus bar. INDICATING PANEL3 nos phase indicating lamps (LED Type) each backed up with MCB and switch shall be provided for each incomer.Provide Intelligent Panel Meter - Enercon EM 6400 with RS 485 port for all incomming feeder01 Nos Digital Volt and Amper Meter OUTGOINGS2 Nos.VFD Panels for TFA 3.7 KW Rating (VFD considered seperately)1No, 20A TPN RCCB (10 kA) for 6HP ODU2Nos, 32A TPN RCCB (10 kA) for 10HP ODU36Nos, 40A TPN RCCB (10 kA) for 12HP ODU

CABLESSupplying & laying of following 1100 volt grade XLPE insulated PVC sheathed copper conductor armoured cables including, anchor fastners on wall with suitable clamps, saddles fixing bolts connecting testing and commissioning etc as per specification complete as required. 4.0 core 6 Sq mm

4.0 core 10 Sq mm

Supply and erection of hot dip G.I. cable tray perforation not more than 17.5% for specific dimensions along with tees, bends. The cable tray shall be hang from ceiling/ fixed to wall with necessary angle/flat iron / hanging rod, for ceiling suspensions, clamps, anchor fastner, nuts, bolts, washers, not mor than 1.5 mtr. apart complete as per specification to complete the job. The tray shall be as follows :-100 x 40 mm x 1.6mm thick

150 x 40 mm x 1.6mm thick

Supplying and fixing of following sizes of steel conduit along with accessories in surface/recess as required.25 mm dia. ISI marked, steel conduit

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 dia. ISI marked, PVC conduit

EARTHING SYSTEMEarth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required Providing and fixing 6 SWG dia G.I. wire on surface or in recess for loop earthing as required.

Inline Fans (Accoustically Insulated)Supply, installation, testing and commissioning of ducted Inline Fans of GSS construction duly powder coated (rectangular box type for upto 20 mm WG SP and circular type for 10 mm WG SP) with centrifugal blower and motor encased in sheet metal casing, canvas connection etc. The Fan motor shall be suitable for operation on 220 V± 10%, 50 Hz, 1 phase AC supply. The Fan assembly shall conform to specifications and in accordance with requirements of drawings and Schedule of Quantities.Air Quantity : 600 CFM Static Pressure : 10 mm wgMotorrating : As Required

AXIAL FLOW FANSSupply, installation, testing and commissioning of AMCA certified for sound and air performance (FEG) Tube Axial fan complete with tube casing in MS standard construction powder coated, aluminium impeller with adjustable blade angles,vibration isolator and directly coupled to TEFC Sq.cage induction motor, suitable for 415V±10%, 50 Hz. 3 phase electric supply complete with required hardware etc. as per specification complete as required. Make: Humidin, System Air, Green heckFans for Staircase PressurizationAir Quantity 28000 CFM Static Pressure : 25 mm wg

Fans for Lift PressurizationAir Quantity 24000 CFM Static Pressure : 25 mm wg Duty : Fresh/Exhaust

Basement Car Ventilation (Fire Rated)Zone -1Air Quantity 4500 CFM Static Pressure : 25 mm wg Duty : Fresh/Exhaust

Zone -2Air Quantity 2500 CFM Static Pressure : 25 mm wg Duty : Fresh/Exhaust

Zone -3Air Quantity 12500 CFM Static Pressure : 25 mm wg Duty : Fresh/Exhaust

Zone -4Air Quantity 9000 CFM Static Pressure : 25 mm wg Duty : Fresh/Exhaust

SHEET METAL WORK (FACTORY FABRICATED)Supply, fabrication, installation & testing of Factory Fabricated sheet metal ducting complete with Spliter Damper vanes as required duly supported by 20 Gauge C channels and therded rods and Construction as per SMACNA specifications and as per approved shop drawings. All duct to be with 120 GSM Zinc coating MAKE : JINDAL, TATA, SAIL 24G (0.6 mm) GSS

22G (0.8 mm) GSS

20G (1.0 mm) GSS

AIR REGISTERSMAKE: SYSTEMAIR/RUSKIN TITUS / TROXSupplying & fixing of powder coated extruded aluminium air registers (grills/Diffusers) as per specifications.

Supplying & fixing of powder coated extruded aluminium Collar Dampers for Air Registers as per specifications.

Supply, installation, testing and commissioning of GI volume control duct damper of G.I. Sheet with Linkages Quadrants damper should have 20G Blade and 22 gauge frame.

Supply, installation and testing of Aluminium exhaust air louvers with bird screen for Fresh air intake or exhaust Air.(Minimum Area to be considered is 0.1sqm)

Supply, installation and testing of Powder coated Linaer Fixed louvers Aluminium extruded grill with collar damper.Size 200mm x 200mm or Lower Size (Minimum Area to be considered is 0.1sqm)

CANVASS CONNECTIONMAKE: EASYFLEX/SHPERE/AIRFLOWSupply, Installation, Testing of 125mm deep antivibration flexible joints at the outlet of air handling units/ductable split units//inline fans. Flexible connections shall be constructed using imported fire retardant fabric with extruded aluminium frame/flange on both sides.

Ventilation SystemSupply, installation, balancing and commissioning of CO Sensor having Measuring range : 0-300 PPM, Sensing element : Electrochemical Diffusion, Measuring Gas: Carbon Monoxide Gas + Enhanced CO+ radicals Detection. Sensor element (cell):- Electrochemical Diffusion, Electrolyte type Gel based Gold plated Plug-in type Sensor transmitter. Connection: - Two wire sensor (for 4-20mA) and three wire for 2-10 VDC, Response time T90:- ≤ 50 Sec. Protection Class: IP 44 Stability & resolution: - ± 3 ppm Sensor life expectancy:- ≥ 5 years Calibration Interval: 1 Year. Sensor Coverage Area: - 700 m2 to 750m2, ideal condition. Humidity non-condensing : 15-90% RH Working temperature :- -10°C to 50°C Power supply:- 18 - 28 VDC ( Overload protected) Analog output signal :- 4-20 mA or 2-10 VDC Make: Honeywell, Allen Bradley, Siemens

Supply, installation, balancing and commissioning of Main Centralized CO Gas Monitoring Master PLC HMI Control Display Alarm Panel having • 4x Analog input (4-20mA from Sensor) • 6x Digital output (potential-free relay contacts) • 8x Digital Input • 2x Analog Output • Modbus RS-485 output connect to Salave Panel • HMI 7 inch display with user-friendly Touch Screen Keypad • Operating voltage 220 VAC • Panel isolation using MCB & Fuse & Alarm Hooter (95dB) Audio Visual Alarm. • Rising / Falling alarm facility to trigger the relay for alarm hooter and Fire detection system • Housed in wall mount Rittal Metal Enclosure • Fully pre-programmed as per global standard and as per customer demand.Make: Honeywell, Allen Bradelly, Siemens

Supply and Laying of 2 Core X 1 sqmm unarmoured copper cable for slave panel to sensors communication

Supply and laying of 3 Core X 1 sqmm unarmoured copper cable for master panel to slave panel communication

Supplying and fixing of 20mm 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.

MS Cable TraysSupplying and installing following size of perforated paintedwith powder coating M.S. cable trays with perforation not more than 17.5%, in convenient sections, joined with connectors, suspended from the ceiling with M.S. suspenders including bolts & nuts, painting suspenders etc as required.100 mm width X 40 mm depth X 1.6 mm thickness

Supply of LT cableSupply of following size of 1.1KV grade multicore Copper conductor XLPE insulated & PVC sheathed armoured power cable as per IS: 7098 (Part-1) 1988 complete as required.4C- 10 sq mm

4C- 6 sq mm

4C- 4 sq mm

2x 1.5Sq mm

Supplying and fixing of following sizes of medium class PVC conduit along with accessories 25 mm Dia

Supplying and fixing of following sizes of steel conduit along with accessories in surface/recess including painting in case of surface conduit, or cutting the wall and making good the same in case of recessed conduit as required.25 mm Dia

EarthingEarth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required Providing and fixing 6 SWG dia G.I. wire on surface or in recess for loop earthing as required.

GLOBAL ENGINEERS