Paradise is the biggest and the most radical development scheme Birmingham has seen for a generation. The seven-hectare site has many complexities including a dual-carriageway, a district heating plant room as well as the adjacent Grade I listed Town Hall. When delivered in 2028, the development will comprise 1.8 million ft2 (167,225 m2) containing a new public realm as well as up to ten new high-quality buildings offering offices, shops, bars, cafés, restaurants and a hotel.
Our services are wide ranging from ensuring that the development is well protected from fire, carrying wind tunnel tests, advising on the structure and fabric of the buildings to meet stringent environmental and energy targets to creating a comprehensive digital model of the site and all of its current and future buildings.
We have provided all engineering and specialist designs for masterplanning and delivery of the first two phases of the development. The first two buildings that form Phase 1 (One and Two Chamberlain Square) will provide 350,000 ft2 of Grade A office space as well as ground-floor retail outlets. Phase 2 includes One Centenary Way, a complex 12-storey 265,000ft2 commercial building directly over the Queensway Tunnel supported with 30m long steel trusses totalling 1000 tonnes.
£700 million investment
1.8 million ft²mixed use development
7 hectaressite in the heart of the city
One Centenary Way is possibly the most complex of all the buildings on the Paradise site. It spans over a dual carriageway tunnel and has a non-structural core. Our structural engineering team worked closely with the architect to evaluate numerous options for integrating a stability system into the building’s façade. We drew upon the expertise of in-house experts to provide detailed information on fire resistance, materials specification and fabrication methodologies to ensure the evaluation of each option was detailed and complete. Close attention was paid to construction sequence and progressive deflection of the individual structures from the earliest stages. Our fire engineering solution for the One Centenary Way structural frame saved over £400,000 of intumescent paint costs. 2,000 tonnes of steelwork in the perimeter frame of One Centenary Way provide stability in lieu of a structural core above the Queensway tunnel.
Complexity of the city centre site
The site has presented the team with many technical challenges with several level changes, buried services, interfaces with the city fabric, and the A38 arterial road passing directly beneath it in a tunnel. The team also had to consider the adjacency of Grade I listed Town Hall and ensure that the existing hotel remains operational throughout. To manage this complexity, we used our BIM skills and sophisticated 3D LiDAR surveys to create a virtual 3D model of the whole site. This gave stakeholders a quick and thorough understanding of the site and how it will evolve. You can see the project take shape on the Paradise Birmingham website.
Assessing flood risks
To support a multi-phased construction programme and meet the requirements of existing infrastructure, Arup carried out a comprehensive flood risk assessment including drainage strategy for the site. The most appropriate discharge locations from the surrounding sewer networks were selected to best accommodate development proposals. Through this assessment, flood risk was effectively mitigated by design, proposing a surface water drainage strategy that ultimately reduced discharge by 40%.
Arup have been excellent and are up there with the best engineering firms I have worked with in terms of the relationship and getting things done. The staff are really professional. ” Rob Groves Regional Director, Argent