Tubes: Site 13A, Paradise Street Development, Liverpool One

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Tubes Ovals hit the aesthetic benchmark The use of concrete filled oval sections for the construction of a cinema’s facade not only allowed for an airy and light open area but also provided the client with the required two-hour fire rating. The £900M Grosvenor Liverpool One retail-led re- generation scheme, rapidly transforming the city’s heart and skyline, is unique both in scale and ap- proach. The development will create six distinct retail districts incorporating leisure and residential opportunities, each with its own character and all based on an existing street layout. The main leisure anchor of the project is a 14- screen Odeon Cinema which comprises of a 25m- high three-storey steel-framed structure clad in copper and stainless steel, housing the two level cinema, which is constructed upon a terracota clad 13m-high retail base. Jeremy Wedge, Principal Engineer for Waterman Structures, says one of main design criteria for this structure was to ensure a clear open space for the building’s two-level foyer. “This glass clad entrance hall contains lifts and escalators to the next level, otherwise it is a clear space of 10m in width,” he adds. In order to achieve this design requirement, Mr Wedge, says the design for the foyer’s facade evolved gradually during consultations with the ar- chitects BDP and the steel contractor William Hare. “We wanted the facade to let in natural light while the open plan design of the foyer needed Oval sections were minimal propping,” explains Mr Wedge. chosen for their “Oval sections were aesthetic appeal, and finally chosen for their aesthetic ap- because they also peal and importantly saved on width. because they also saved on width.” “Using round sections would have meant at least double the width and a more bulky look for the overall facade,” adds Mr Wedge. “And these col- umns also needed no propping on the major axis, which was another important architectural consid- eration.” The 15m-high two-storey facade measures 65m long and intermediate 500mm x 250mm x 16mm Above: Oval sections in the facade will allow more OHSs were erected at 8m intervals, with 300mm x light to penetrate into the Cinema’s foyer than tradi- 150mm x 12.5mm OHS horizontal beams at 5m and tional circular sections. 10m heights. NSC March 2007 25


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