Three types of Kawneer’s curtain wall feature on the Atlas’ commercial element. Bespoke curtain walling by leading UK manufacturer Kawneer was preferred for an 11-storey office building at the heart of London’s architectural sector. Kawneer’s AA®265 unitised system was adapted by the company for the commercial element of the £200
Work has just begun on the installation of architectural glazing systems by leading manufacturer Kawneer on the second of three buildings at Bournemouth University. Approved dealer Leay is installing Kawneer’s AA®100 zone-drained capped curtain walling, along with AA®541 fixed light windows and two types of doors on the 5,000m2 Fusion
BDC 319 : Aug 2024
Three types of Kawneer’s curtain wall feature on the Atlas’ commercial element. Bespoke curtain walling by leading UK manufacturer Kawneer was preferred for an 11-storey office building at the heart of London’s architectural sector. Kawneer’s AA®265 unitised system was adapted by the company for the commercial element of the £200 million Atlas building – at 40 storeys the tallest tower in London’s Tech City area – at 145 City Road, Clerkenwell. Concept-designed by Make architects and delivered by the Design Delivery Unit of Scott Brownrigg, the commercial building actually featured a total of three types of Kawneer’s curtain walling – the traditional stick system AA®110 (zone drained) on the ground floor, the adapted AA®265 on the floors above, and standard unitised AA®201 on the tenth floor return elevation to the existing building. The adapted AA®265 modular system incorporated GRC and aluminium rainscreen cladding and glazed vision areas in each panel. Some 3m wide, 3.85m high and one tonne in weight, each unit was delivered to site and hoisted into position by a tower crane, complete with the cladding and glazing in place. Kawneer’s Technical Proposals Engineer Dave Fletcher said: “The basic AA®265 design was revised to accommodate the building movement that had been identified by the structural engineers as it could accommodate the size of units and the GRC rainscreen units being pre-fixed to the panels. “The system developments, including new profile and accessory design such as 19 project-specific dies, were all carried out by our Technical Department at our Head Office.” Installed by specialist sub-contractor Mace Facades for main contractor Mace, the Kawneer systems also included thermally superior AA®720 entrance doors on all floors. The Atlas’ commercial element is occupied by WeWork and features a strong emphasis on nature, with three roof terraces and external green walls. WeWorks’ coworking space allows members to enjoy 11 floors of collaborative work spaces, stunning private offices, welcoming event spaces, and modern conference rooms for hosting key client meetings. In addition to being dog-friendly, this super-accommodating office space features bike storage and on-site showers. Along with the Atlas tower, the WeWork building sits above the London Underground and Thameslink lines. This discovery at planning stage changed the concept for the structural strategy, resulting in the creation of a new superstructure design to prevent the buildings from twisting and leaning. Loads imposed by the buildings are kept clear of the tube tunnels by cantilevering the structures over the subterranean Victorian engineering. The mass provided by the frame, and by increasing the thickness of the ground-floor and mezzanine first-floor slabs, helped give the structure sufficient inertia to dampen the ground-borne vibration from the underground trains. The original planning concept was for a series of white and off-white shades of terracotta cladding. However, with the stability issues raised at post-planning, the weight of the terracotta posed a challenge with the cantilevered building. Design Delivery Unit at Scott Brownrigg demonstrated options that could be achieved using anodised aluminium, and following modelling and testing of the material, proved that given the scale, repetition and shape of the facade, a unitised system would work and still achieve the original vision.
Work has just begun on the installation of architectural glazing systems by leading manufacturer Kawneer on the second of three buildings at Bournemouth University. Approved dealer Leay is installing Kawneer’s AA®100 zone-drained capped curtain walling, along with AA®541 fixed light windows and two types of doors on the 5,000m2 Fusion 2/Poole Gateway Building (pictured) designed by Atkins architects. Leay’s team of up to 10 operatives, who are also installing AA®720 and series 190 heavy-duty entrance doors, is expected to be on site until January while the overall project is scheduled for completion by Willmott Dixon in September 2019. The new £27 million landmark building will target BREEAM “Excellent” and provide specialist facilities for two of the university’s internationally renowned faculties – Media and Communication and Science and Technology. The building will house state-of-the-art facilities on a series of tiered floors. This will include many multi-media areas, each with acoustically and visually sensitive areas, including TV and film studios, audio editing, media production spaces, green screen and motion capture suites, and animation studios. Leay’s business development manager Mike Watts said: “The project is in essence large triangular curtain wall screens to the front and rear elevations. These screens are 25m wide and 15m high at the tallest point and are located within the atrium. “The client was keen to see clean sightlines and minimal steelwork so we worked alongside the structural engineer to ensure the intermediate steels to tie the screen back to were kept to a minimum in quantity and also a minimum in size by calculating the screen to transfer and deadload itself down on to the ground-bearing slab. “We proposed the use of Kawneer products to the architect and Willmott Dixon from day one on this scheme as we knew they would provide the aesthetics the architect was requiring and also the structural integrity required for the spans of curtain wall.” Designed to form a new visual gateway to the university’s Talbot Campus and its parkland setting, it forms part of a wider £100 million programme to expand the university’s facilities. Work has also started on installing Kawneer systems on a third building at the university – a £40 million new home for the Faculty of Health and Social Sciences. Again designed by Atkins but this time with main contractor Kier, the Fusion 3/Bournemouth Gateway Building will feature Kawneer’s AA®100 zone/mullion drained curtain walling with feature face caps on tall atrium screens along with AA®720 window vents and entrance doors and series 190 doors. Kawneer approved dealer Aluminium Sashes will have a team of up to eight operatives on site until April 2019. Kawneer systems were also used in 2017 on the original £22 million Fusion building at the university which fuses education, research and professional practice through a mix of flexible informal study and social collaborative spaces including 27 seminar rooms, three lecture theatres, research space and a 24-station PC laboratory. Kawneer’s AA®100 zone-drained curtain walling, AA®541 top-hung casement windows, AA®545 low/medium duty swing doors and series 190 doors were installed by approved dealer AB Glass for Willmott Dixon to a BDP design. This 5,800m2* BREEAM “Excellent” building is topped with a glass dome, allowing maximum natural light into the building. Feature cladding bands were fixed to the Kawneer curtain walling by aluminium fins.
