Specification
General
Clear floor to ceiling height
3rd – 5th floors – 2.70m
Ground Floor – 5.05m
The above allows for:
• Lighting zone including ceiling depth–150mm
• Raised floor zone including raised floor panels –150mm
Means of escape ratio
1 person per 10 m² net area for standard office floors.
WC provision
WC provision on every upper office floor based on an occupancy of 1 person per 10 m2 at 60/60 male/female split.
STRUCTURE
Floor loading: typical office levels
• Imposed Load 3.50 kN/m2 + 1.00 kN/m2 (partitions)
MEP − OFFICES
Passenger lifts
• Two (17 persons) machine-room-less (MRL) lifts will serve ground level to level 5 and will operate at a speed of 1.6m/s
• One of the passenger lifts will be designated as a firefighting lift and serve one additional floor at level BM
Goods lifts
1 No 1600 kg goods lift will serve all floors.
Performance
Population density: 1 per 10 m2 NIA.
Design conditions
External design conditions
• Summer: 29°C/20°C db/wb
• Winter: -4°C db 100% saturated
Internal design conditions
• Summer: 22°C ± 2°C
• Winter: 22°C ± 2°C
Heating systems
The office will be heated by means of a Variable Refrigerant Flow (VRF) System.
Cooling systems
Cooling loads:
• Lighting: 10 W/m2
• Small power: 25 W/m2
• Additional spare capacity 10 W/m2
• The offices will be cooled with fan coil units by means of a Variable Refrigerant Flow (VRF) System
Ventilation systems
Primary Air Supply Rate (Outside Air)
• 12 l/s per person at 1 per 10m2
Electrical supply/power/lighting systems
• Building design maximum demand load – 650 kVA for office area
• Separate incoming electrical utility substation located at Lower Ground Level
Power allowances
• Lighting: 10 W/m2
• Small power: 25 W/ m2 + 10 W/m2 in riser capacity
• Lighting levels office areas: 350–450 Lux to CIBSE SLL Guide LG7