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.


Floor loading: typical office levels
• Imposed Load 3.50 kN/m2 + 1.00 kN/m2 (partitions)


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.


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