Advancing the Employer’s Reference Design (adopted in February 2018), the Curzon Street Team with WSP as lead consultant, Grimshaws as building architect and Grants Associates as landscape and public realm lead has meticulously sought to achieve a modern, welcoming and striking architectural statement that also minimised impacts on the environment, while creating opportunities for businesses and communities alike.
WSP’s Tim Danson, lead for Environment & Sustainability on the project , started his journey on sustainability with the London 2012 Olympics in 2007-2008, following eight years in environmental management. Tim notes how the Olympic Delivery Authority approach to delivering sustainable design has advanced and evolved over the years, but with major building and infrastructure schemes now consistently applying the best of the collaborative, co-located and ‘exemplar contract requirements’ approach adopted for London. To this end, an office was set up in WSP’s flagship office in Birmingham’s Mailbox for HS2 and its Curzon Street delivery partners, where the team has worked in unison for over two years to engineer sustainable, resilient outcomes.
It was here that a ‘Future Ready’ workshop was hosted by WSP to kick start the RIBA2 design, with 40 delivery partners including David Symons (our Future Ready Lead) and Giles Perkins (our Future Mobility Lead) collaborating to consider what might be possible on the scheme across technological, community, resources and climate themes. The breadth of expertise at the workshop generated some 150 future ready ideas, many of which have proved fundamental in the success of the design, such as engineering flexibility into the station for a future connection to the Birmingham District Energy Scheme.
Responding to HS2’s ambitions, the Curzon Street team was responsible for weaving a sustainable, future ready thread throughout the design. Engaging, supporting and constructively challenging the design over a two year period demonstrated the intricate level of care and consideration needed to achieve a range of outcomes across community, carbon, climate, biodiversity, materials and waste themes, among others. For example:
Over forty opportunities for carbon reduction were approved and integrated within the Scheme Cost Plan, reducing the station’s lifetime emissions by over 87,000tCO2e. For example, the station will be net zero carbon for those assets that can be regulated(heating, cooling, lighting)
, through the use of PVs (2,855m2 solar panels will be located on the platform canopies), Ground Source Heat Pumps and LED lighting. Pre-fabricated timber soffit units (27x more carbon efficient than steel comparators) will be installed in the main station roof, and paving in the public realm has been reduced in depth by 38% (to 50mm) to reduce embodied carbon.