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Leisure NSC 11 September 15 the uppermost level. Either side of the three-storey section are two open column-free zones, one containing the two pools and the other measuring 45m × 36m accommodating the sports hall. The large sports hall is formed with a series of 36m-long trusses, brought to site in two sections, bolted together on the ground and lifted into place as one large member. The trusses incorporate a pitch to form the roof and so their depth varies from 1.1m up to 2.8m deep at the apex. The bowling area is another large columnfree area and it is formed by a series of 20m-long rafters, linked together by tubular bracing. The design of the floor of the bowling area, which is also the roof for the first floor fitness suite, had to take vibration into account. “Although we largely designed the steelwork, Ramboll oversaw the project and had a lot of input for loadings and vibration. For the bowling rink, floor vibration could be an issue so we had to use large 914UKBs to help absorb any movement,” explains EvadX Project Manager Steve Morris. “If for instance line dancing was to take place, that would cause far more vibration than bowling so we had to over-design the steelwork for all eventualities,” adds Mr Lane. The most interesting and challenging steelwork is positioned above the main pool and takes the form of a large girder truss. Weighing 15t and measuring 32m-long by 2.8m deep, the truss was brought to site as two fully fabricated halves that were then bolted together and then craned into place by two mobile cranes in a tandem lift. This large steelwork element is an essential part of the steel design as it supports a second floor plant deck that is adjacent to the bowling rink and overhangs the pool. Positioned at 90 degrees to this large girder truss is another truss that performs two tasks. Its lower boom supports the first floor dance studio, while the top boom supports the pool’s roof. “This truss had to be brought to site piece-small and then erected on site. It is 3m deep because it will incorporate windows overlooking the pool and consequently it would have been too large to be transported by road,” explains Mr Morris. Both of these trusses connect back to a large 500mm diameter tubular column that forms the cornerstone to the pool area’s steelwork. EvadX also installed the project’s metal decking and precast lift shafts and precast terracing units for the pool’s seating. Oldham Sports Centre is due to be completed in October and the facility will open before Christmas. Oldham has produced a rich vein of steel-framed projects for Willmott Dixon. Recently the company has constructed three academies and a building for Oldham College, while in 2014 it completed the Greater Manchester Sustainable Engineering UTC, which is located adjacent to the Oldham Sports Centre. A total of 233t of steel was fabricated, supplied and erected by Leach Structural Steelwork for this project. Leach also installed metal decking, precast stairs and lift shafts. The £9M building opened in September and houses full-time education facilities for 14-18 year-olds providing opportunities for them to earn qualifications and experience for in-demand skills and become the next leaders in engineering. Olympic legacy at Royton Sports Centre A few miles down the road from the Oldham Sports Centre, Willmott Dixon is currently constructing another similar project that is reusing equipment from the London 2012 Olympics. Royton Leisure Centre is a two-storey steel-framed building containing a 25m-long six-lane swimming pool; a learner pool; an 80-station fitness gym, and two exercise/dance studios. Filtration equipment used at Royton has been sourced from training and warmdown pools that were dismantled after the London Olympic Games. EvadX has erected a total of 200t steel for this project. Educating in steel


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