Mott MacDonald, an engineering, management, and development consultancy, has revealed that construction has commenced on Changi Airport Terminal 5 (T5) in Singapore.

The new terminal will be integrated with the airport’s existing terminals, bolstering the site’s capacity to operate as a unified air hub.

Set to open in the mid-2030s, T5 is designed to handle approximately 50 million passengers annually in its first phase.

The ground-breaking ceremony was led by Singapore’s prime minister and minister for finance, Lawrence Wong.

For the first time at Changi Airport, T5 will feature a ground transportation centre that consolidates train, bus, taxi, and other transport services, thus improving connectivity to the rest of Singapore.

This development comes with the foresight to adapt to potential crises, drawing from the experiences of the Covid-19 pandemic.

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The terminal will have the capability to operate as smaller subterminals and include spaces that can be repurposed for health testing or segregating high-risk passengers if necessary.

T5 is also set to be a Green Mark Platinum Super Low Energy building, utilising clean energy and specific building management systems to minimise the airport’s carbon footprint.

The terminal’s rooftop solar system, projected to be one of Singapore’s largest, has the potential to generate enough energy to power roughly 20,000 four-room Housing & Development Board flats for a year.

The terminal will be part of the 1,080-hectare Changi East development, designed to withstand extreme weather and the effects of climate change.

Specifically, the airfield, elevated at 5.5m above sea level, and sloped aircraft taxiways are engineered to manage stormwater effectively during high tide and intense rainfall.

Wong said: “The construction itself of T5 is a significant, complex engineering project.”

SJ Group, a company specialising in infrastructure and managed services consulting, is collaborating with design consultancy Arup and Mott MacDonald to deliver full engineering services for the design of T5’s main and satellite terminal buildings, ground transportation centre, and primary landside roadways.

Additionally, a separate consortium will see Mott MacDonald serving as the Master Civil Consultants.

Arup and Mott MacDonald are also contributing to the development of Changi East’s airport systems and technology.

Mott MacDonald spearheaded the design of the two-storey terminal extension of Belfast International Airport in Northern Ireland, which opened earlier this month.