April 2017

28 BUILD / April 2017 , More Than Just a Pretty Façade Comar Architectural AluminiumSystems is the largest British, privately owned aluminium systems company in Europe. We’ve profiled these innovators in design to learnmore about the secrets behind their success. Comar designs, extrudes and distributes over 700 integrated profiles to a nationwide approved fabricator network for use in aluminium curtain walling, window, door and ground floor treatment applications. The firm has built its reputation on delivery, and as such over £5m of mill, white polyester powder coating, silver, bronze and anodised profiles are kept in stock. This ensures that 99% of orders are fulfilled by its customers’ weekly delivery. Leveraging the vast industry expertise and reach of its parent group, Comar is able to offer clients so much more than just aluminium solutions. The Parkside Group incorporates Comar Architectural Aluminium Systems, Alu-Timber, Axim and Duco Solar Shading & Ventilation. This provides a unique opportunity for specifiers and fabricators to rely on a single source for architectural aluminium systems, hardware and ventilation control products. Drawing on this vast network, Comar has been able to attract some of the most talented Project Managers, who specialise in providing architects and specifiers with project support and NBS specifications, on the market. Therefore, once Comar has been specified as the supplier for a particular client or project, a nationwide network of approved fabricators ensures the successful completion of projects. Comar Project Managers can provide fabricators who specialise in commercial, new, refurbishment or public building work. Among the firm’s recent success, the University of Birmingham’s new Chamberlain Hall Student Accommodation, an impressive example of regeneration which is in keeping with the landscape as well as providing all essential capacity growth for the future. Consisting of 2 linked tall towers at 17 at & 21 stories and 5 “finger” blocks. With the modern financial implications of studying and attracting international students, accommodation needs are changing. The University of Birmingham now has a building which gives good quality architecture and a landmark to Birmingham’s skyline that advertises the quality of the institute to perspective students and their parents. Feasibility studies indicated that to increasing the density could not be achieved with the existing floor-plan therefore a new building was commissioned. The design concept was to maintain the links to the previous building tower yet create a design that was modern, light; creating a place where students would want to live, socialise and study. The Façade concept was to ensures that the palette of colours is sympathetic to the landscape, using rich coppers, and an intelligent use of brickwork the building merges into the landscape and maintains cross corridor views to the lake. The façade had to provide function as well as form. Day-lighting is vital to aid with studying, no dark gloomy corners, a light and airy interior is desirable. Natural ventilation was a must, however, in keeping with the structured façade open- in windows were required fronted with ventilation panels, to allow ventilation yet not impact on the façades integrity, maintaining the clean lines and sleek elevations. Making the façade work and integrate with all the cladding elements involved Comar designing new methods of fixing. The flush façade was a must and all the elements: Comar Glazing, Mesh and Copper panels needed to integrate. One of the engineering challenges on the project was the connection of the perforated copper cladding panels to the Comar 6EFT curtain walling. This connection had a few considerations, such as the metals being at opposite ends of the galvanic table, aesthetic demands, thermal performance and the structural considerations of loading panels to Comar 6EFT curtain walling Continental Installations worked closely with Comar and main contractor Balfour Beatty on the complex façade. The team designed a bespoke capping profile which was extruded with re-enforced walls capable of fixing the copper panels directly to it. A heavy-duty pressure plate with a fixing port arrangement, was used to mechanically fix the capping to the pressure plate. Subsequent regular fixings then transmitted the applied loads back to the rear structural mullion member to ensure there was no thermal bridging. All connections were fully isolated to prevent bi- metallic corrosion. This bespoke design then included inward full height opening windows which sat behind the façade, Comar 5Pi Advanced Tilt/Turn open in windows were selected. These windows were perfect for the application as they offer slim sight-lines, thus maximising daylighting as well as the profiles themselves have thicker walls that provide robustness and large spans to ensure they stand the test of time. On the window elements Comar 5Pi Advanced Tilt/Turn open in 1703BU17