Company: B & K Structures
Technology: Glulam and CLT
Under the banner of Believe in Better Buildings (BiBB), BSkyB’s new educational facility for
graduates, apprentices and staff training, reflects the company’s sustainable aspirations. Based at the Campus at Osterley, West London, the 3,800m2 development encompasses a three storey linear building with an additional storey accommodating a restaurant and roof terrace - all providing an inviting multi-functional amenity.
Mace appointed B & K Structures to provide an optimised hybrid structure for the build – comprising a glulam frame with cross laminated timber (CLT) floor, roof and stability walls, together with perimeter wall cassettes. The structure was designed to deliver permanent quality, adaptability and long term energy efficiency, to meet the sustainability objectives. The build
was to be completed in time for BSkyB’s 25th anniversary celebration making speed and ease of construction vital - however, it was important not to compromise on the quality of design and materials as a result.
An engineered timber industrial system was specified as it allows for rapid assembly and offers excellent airtightness through insulated panel facades. The solid timber frame was able to meet the natural look and feel that BSkyB were looking for and timber cassettes were again able to offer the low thermal resistance and high airtightness that the structure required to meet the design brief.
The building was positioned to sit at the centre of Sky’s Campus and therefore is testament to the company’s core values and ecological ethos. BSkyB had specific sustainability targets mapped out for the structural framing options. The targets included a 15% reduction in embodied carbon of construction, 27% of recycled content, responsible sourcing of materials through PEFC or FSC timber and 80% of key materials by mass manufacture within a given radius, depending on
Due to construction taking place in the midst of Sky’s fully operational headquarters, extensive planning was essential – particularly with regard to noise levels and safety. Flexibility was also crucial to the project’s success, as part of the brief stated that the spaces should be adaptable over the long term.
The system took the form of a glulam frame with visible grade CLT panels providing core stability to the walls and floors, which were to be left largely exposed within the finished structure. The building featured a green roof with a CLT structure, covered with PV Panels and sedum. The timber cassettes were utilised to erect the walls, ranging from 0.7m– 2.5m in width to 1.5m – 12.5m in length to accommodate the window arrangement. The connections used were galvanized steel
bracketry, with connection timber plugs and covers - boarded to provide fire protection to the connections.
Shell and core cost for the building was £14.5M. The fit-out contains state-of-the-art IT and media equipment, pushing the total project cost (including adjacent plaza) to £25M.According to Timothy Snelson, Associate Engineer of Arup, the big timber facilitated the best build for this project, with the CLT slabs and insulated panels providing the ‘real big win’ in programme
Outcome / results / success factor
According to Timothy Snelson, Associate Engineer of Arup, the big timber facilitated the best build for this project, with the CLT slabs and insulated panels providing the ‘real big win’ in programme terms.