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table 1: Cost comparison
Cost/m² (GIFA)
100%
Technical Area		 % Installed
100%
Technical Area		 Cost/m² (GIFA)
100%
Technical Area
Disposal installations      
Rainwater: downpipes and gutters 16 200 m² at £3 3 100 3
Condensate drainage from ccu 9700 m² at £3 2 50 2
Soil, waste and vent to plant areas 5500 m² at £2 1 100 1
Soil, waste and vent to support areas 1000 m² at £9 1 100 1
     
Water installations      
Hot and cold water services to support areas 1000 m² at £28 2 100 2
Hot and cold water services to plant areas 5500 m² at £5 2 100 2
     
Space heating and air treatment      
Chillers, 12 x 1000 kW including integral pumps and controls (N+1) 12 at £130,000 96 50 48
CHW distribution within plant areas including insulation, valving etc item at £500,000 31 70 22
Close control units to UPS and switchgear rooms, including connections and ductwork etc. (70 kW each) 18 Nr at £12,500 14 75 10
CHW ring main distribution to technical space including insulation, valving etc. 1700 m at £500 52 25 13
Close control units, including ductwork and connections etc (70 kW each) 150 Nr at £12,500 116 25 29
Allowance for frost protection to plant areas 5500 m² at £13 4 100 4
Allowance for frost protection to vacant areas 9700 m² at £10 – 75 4
Ventilation to plantrooms, including air handling plant, ductwork distribution and grilles etc item at £40,000 2 100 2
Ventilation to technical space, including air handling plant, ductwork distribution and grilles etc. item at £150,000 9 50 5
Gaseous and smoke extract systems to technical spaces complete 9700 m² at £10 6 50 3
Toilet extract installation item at £20,000 1 100 1
Air conditioning to office areas; two pipe fan coil unit with electric reheat; chilled water distribution; condensate drainage; fan coil units; ductwork; terminal units; heater batteries; insulation; grilles and diffusers 1000 m² at £150 9 100 9
   
Electrical Installations      
High voltage switchgear, transformers and distribution based on requirement for a 12 MVA supply Item at £800,000 49 30 15
Main and sub-main installation comprising switchgear, power factor correction, cabling, busbar and distribution equipment item at £3,800,000 235 30 71
LV power distribution to support areas 1000 m² at £15 1 100 1
PDU's complete with isolating transformer and an average of 160 SP outgoing ways, based on requirement of 80 units Item at £200,000 12 25 3
Emergency power off installation Item at £30,000 2 75 1
Smallpower distribution to technical spaces for general use 9700 m² at £5 3 25 1
Smallpower distribution to plant areas 5500 m² at £15 5 100 5
Smallpower distribution to support areas, busbar and floorbox to office areas, wall mounted elsewhere 1000 m² at £25 2 100 2
Lighting installation (luminaires and lamps) 16 200 m² at £35 35 70 25
Allowance for luminaires and lamps to support areas 1000 m² at £50 3 50 2
Emergency lighting installation 16 200 m² at £8 8 50 4
Power and containment to cooling units in technical spaces, based ona requirement for 150 units with dual feeds Item at £220,000 14 30 4
Power and containment to mechanical services in plant rooms Item at £50,000 3 50 2
Containment in plant rooms, trunking, tray and ladder rack 5500 m² at £20 7 50 4
Power and containment to serve bems, cctv and fire alarm systems in technical areas 9 700m² at £10 6 50 3
IT containment to technical spaces using 600 mm basket 9700 m² at £15 9 25 2
IT containment to support areas 1000 m² at £8 1 100 1
Standby generator installation based on 9Nr 2 MVA sets, providing N+1, including exhausts, silencers, controls etc and including 72 h fuel storage Item at £2,880,000 178 30 59
UPS installation based on 20nr 1000kVA (4 x 5 MVA) static units, providing N+1 redundancy Item at £4,000,000 247 30 82
UPS input/output panels and distribution Item at £1,500,000 93 30 31
     
Lift Installations      
Passenger/goods lift; hydraulic; 21 person; 1600 Kg; serving 2 stops 2Nr at £120,000 15 100 15
Allowance for dock leveller Item at £10,000 1 100 1
     
Protective Installations      
Gaseous fire suppression system to technical area 9700 m² at £260 156 50 78
Pre-action sprinkler installation to plant areas 5500 m² at £35 12 100 12
Leak detection 9700 m² at £5 3 50 2
Lightning protection 16 200 m² at £1 1 100 1
Earthing and Bonding 16 200 m² at £4 4 70 3
     
Communications Installations      
Addressable fire and smoke detection and alarm system to plant and support areas 6500 m² at £20 8 100 8
Allowance for integration of fire and smoke detection system with gaseous extinguishing installation 9700 m² at £2 1 50 1
VESDA installation to technical areas 9700 m² at £50 30 30 10
Intruder detection (monitored doors, windows and passive infrared detection) 16 200 m² at £5 5 100 5
CCTV installation to technical spaces, based on requirement for coverage in all aisles between cabinets Item at £950,000 59 30 20
Allowance for cctv installation to plant and support areas Item at £140,000 9 100 9
Access control system to technical spaces, based on a monitored entry/exit system, integrated with the intruder detection system Item at £55,000 3 70 2
Allowance for access control system to plant and support areas Item at £65,000 4 100 4
Containment for security system 16 200 m² at £5 5 100 5
     
Special Installations      
Building management system 16 200 m² at £40 40 60 24
     
TOTAL COST 1618 679