| Cost breakdown |
| Space heating ventilation systems | |
| Upgrade to base building chilled water plant for enhanced cooling to data centre, serving 375 W/m², with redundancy to n+1 standard: 1000 m² at £285/m2 | £285/m² |
| Chilled water distribution within data centre to free-standing cooling units, with associated water softening plant, condensate, insulation and humidification: 1000 m² at £325/m² | £325/m² |
| Space heating & ventilating systems total | £610/m² |
| | |
| Ventilation system | |
| Supply and extract ventilation, including dedicated gas extract system, low-level distribution, including floor grilles: 1000 m² at £135/m² | £135 |
| Ventilation system total | £135/m² |
| | |
| Electrical installation | |
| Mains distribution with single incoming hv, generator backed lv switchgear, busbar and cabling distribution through ups system: 1000 m² at £50/m² | £50/m² |
| Standby generators with redundancy to n+1 standard, controls, oil storage and distribution and flues. Generators located in the basement or on rooftops: 1500 kVA at £165/kVA | £250/m² |
| UPS back-up system, 10 minute autonomy, European batteries, controls and distribution equipment located in plant area, redundancy n+1: 1600 kVA at £215/kVA | £345/m² |
| Alternative specification | |
| Rotary diesel ups as alternative back-up to generators and ups, controls, oil storage and distribution and flues. Located in the basement or on rooftop areas, redundancy to n+1: 1500 kVA at £360/kVA saving of £55/m² | |
| Mains distribution | |
| LV switchgear, cabling, power distribution units and transfer switches to location in data centre. (six power distribution units at £22 000 plus allowance for distribution): 1000 m2 at £160/m2 | £160/m² |
| Local power supplies | |
| Underfloor supplies to cabinets, dual feed in armoured radial feeds, terminating in BS4343 outlets, dual radial-feeds to mechanical plant: 580 feeds at £300 each | £175/m² |
| Lighting | |
| Suspended luminaires, wiring and controls: 1000 m² at £35/m² | £35/m² |
| Data containment | |
| Underfloor cable basket: 1000 m² at £20/m² | £20/m² |
| Electrical installations total | £1035/m² |
| | |
| Protective installations | |
| Sprinklers (pre-action type), storage tanks, pumps, pipework distribution, control values, alarm panels and controls. Data centre installation incorporated into main sprinkler system: 1000 m² at £35/m² | £35/m² |
| Alternative specification: gaseous extinguishing system using inert gas. (An alternative to sprinkler systems, offering greater protection to equipment installed above and below the floor): 1000 m² at £280/m². Extra over-cost: £245/m² plus additional builder's work costs associated with strengthening partitions. | |
| Leak detection, installed adjacent to cooling plant pipework (generally to room perimeter): 250 m at £75/m | £20/m² |
| Earthing and bonding: 1000 m² at £5/m2 | £5/m² |
| Protective installations total | £60/m² |
| | |
| Communications installations | |
| Addressable fire alarm and detection system providing full L1 cover plus interface to sprinkler system: 1000 m² at £30/m2 | £30/m² |
| Extra for very early warning fire detection system, installation above and below raised floor: 1000 m² at £50/m2 | £50/m² |
| Security installation, cctv, intruder detection and access control linked to main system, (based on 20 cameras and four card access points): 1000 m² at £75/m² | £75/m² |
| Communications installations total | £155/m² |
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| Special installations | |
| Building energy management system, controls and monitoring; interface with main building management system: 1000 m² at £45/m² | £45/m² |
| Special installations total | £45/m² |
| | |
| Total cost of data centre services | |
| Installation: | £2040/m2 |
| | |
| Exclusions | |
| inflation beyond 4th quarter 2000 | |
| general builders’ work | |
| specialist builders’ work installations including: floor strengthening, blast protection, screening for electro-magnetic interference | |
| fit-out works beyond the boundary of the data centre except where stated in the scope of works | |
| external works, including enhanced hv supply capacity or dual hv feeds | |
| main contractor’s overheads, profit and attendance | |
| main contract preliminaries | |
| professional and prescribed fees | |
| contingencies and design reserve | |
| tax allowances | |
| vat | |
