A high profile and large-scale refurbishment conducted in a live airport environment, the project provided passengers with a modern, high quality terminal building that delivers a world class passenger experience.
A high profile and large-scale refurbishment conducted in a live airport environment, the T4 Tomorrow project provided passengers with a modern, high quality terminal building that delivers a world class passenger experience. It kept a busy terminal fully operational throughout the construction of the 180-metre extension, providing Heathrow with new airline accommodation, lounges and baggage system upgrades to deliver passengers a vastly improved experience.
Working in close collaboration with the architect, civil and structural engineers and BAA, BakerHicks provided building services for the project from brief to build.
Design of lighting, electrical, heating, ventilation and air conditioning (HVAC) and energy systems
Design of a new electrical substation
Integration of safety measures into building services’ designs
With Terminal 4 seeing more than 10 million passengers pass through its gates every year, it was imperative that the terminal was kept operational throughout the works and passenger safety and comfort was not compromised. Our engineers worked with the wider design team to implement phasing throughout the works, minimising the impact and downtime of services to other parts of the airport. This was particularly important with the build of the new substation, designed by our engineers to secure resilience in future electrical supply. We also designed in measures to protect passengers in the event of a terrorist attack, without increasing the prime cost.
The passenger experience and comfort was also a key requirement on the project. We worked closely with the architect to develop a glazed façade that optimised natural daylight, creating an enjoyable space with an architecturally striking structure. Our engineers also designed energy and air conditioning systems that maximised air infiltration and reduce solar heat gains, ensuring comfortable internal conditions whilst reducing the space and plant required for HVAC. This resulted in energy savings of around 20% below Part L Building Regulation requirements, as well as reducing the need for structural steel reinforcement through smaller plant sizes which reduced the cost of the project.
The project was delivered in the high-profile environment of a major international airport without disrupting operations. It provides a secure, comfortable and architecturally striking terminal, giving Heathrow’s passengers a first-class travel experience.