Sir Robert McAlpine
Grimshaw and KSS
The Wimbledon No.1 Court redevelopment has been undertaken to provide a bespoke new roof structure to support the sliding roof system - like that of the Centre Court.
Alongside the development of the roof structure there are extensions to the hospitality levels around the stadia, to accommodate an increase in the numbers of hospitality suites and to provide the suites with large open spaces for viewing of the surrounding Wimbledon complex. Further works also include the new Walled Garden and Aorangi Café plus an upgrade to the building facade to create a more modern environment around No.1 Court.
Severfield’s scope of works on this project includes 5 large truss units to support a complex inner roof structure. These trusses were installed in manageable sized sections, using our own temporary works system and bespoke units, designed to work in harmony for the gradual de-jack of each portion of the roof.
Tying the trusses together is the inner roof. This comprises of a braced lattice structure which cantilevers off the larger trusses and is fixed by a tension ring at the innermost portion of the roof. The tension ring itself posed one of the more challenging operations of the project, whereby a gradual de-jack and lowering of the roof was executed professionally and successfully, in conjunction with the engineer and main contractor.
To the rear of the trusses there are plant decks with an outer roof system, which when creating, we utilised both our Seversafe temporary edge protection and in-house metal deck system. These plant decks are to support the stadia’s vast plant and air conditioning units to give the court an ambient temperature.
The new roof system has an element of 11 moving trusses, with each truss being approximately 75 metres long and having an average lift weight of 93 tonnes. This section was pre-assembled on two of the practice courts in preparation for the installation during Severfield’s 2018-19 works.
Severfield’s operations have been highly successful given the complexity of such a unique structure and is a credit to all involved from our internal staff and our supply chain partners.