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PROJECT REPORT: TRANSPORT FACILITIES & PUBLIC REALM
ensure the concourse area was unheated and uncooled (with only natural ventilation provision), while achieving the HS2 internal temperature criteria for both winter and summer. Controlling the relative humidity of the concourse was also crucial to guarantee the durability of the timber roof and reduce the risk of condensation on the facade. The building physics, architecture and engineering teams have collaborated closely to achieve this, and simulations were carried out to predict the internal temperature and relative humidity of the space, against the structural timber requirements and condensation risk on the facade.
The building envelope provides the primary level of protection against adverse external conditions, both in summer and winter. During the early stages of the project, a key priority was to determine the required U-values and air permeability of the envelope to ensure thermal comfort and reduce the condensation risk. During periods of high footfall in cold weather, where the main entrance doors are open for extended periods, air curtains will be used when required to further reduce the risks of cold draughts and discomfort.
Project into the future
This significant contract for both client, Laing O’Rourke and Arup is valued at
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The overall design vision for the station and site is “rooted in an ambition to work with the nature that surrounds it”
around £370m, and will require more collaboration between O’Rourke and HS2 Ltd, across its two distinct stages. Initially, the teams will finalise the detailed design, followed by the construction of what is likely to become an iconic station in the area over the following several years. As well as being highly sustainable, the station is set to boost the local Solihull economy. Arup’s inclusion of what is a grand public forecourt has been designed to allow for future development to help support this growth. Stakeholders such as Arden Cross, the Urban Growth Company (on behalf of Solihull Council), the West Midlands Combined Authority and others, are developing opportunities to help maximise the economic potential. According to HS2, the ambition is to create of 30,000 jobs as a result of the new Interchange Station and its ancillary facilities, as well up to 3,000 new homes, and 70,000 m2
of commercial space. g ADF OCTOBER 2023
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