African Design Magazine October 2015 | Page 56

Feature Steel Awards 2015 Joint Winners of Light Steel Frame Category: House De Clercq & Cottage and Mediclinic Nothing emphasises more the coming of age of light steel frame building (LSFB) in South Africa than the record number of LSFB project entries for Steel Awards 2015. The judges had great difficulty choosing between these two projects so they opted for Joint Category Winners in the Saint Gobain Light Steel Frame Building category. Mediclinic, Midstream, Centurion Due to the early involvement of MiTek, the detailer and profile supplier, the architect was convinced that the design should include a LSF roof structure to reduce the total load on the supporting structure. The Ultra-Span (a light gauge steel roof truss system by MiTek) roof structure covers 9100m² of the roof structure and weighs in at almost 68 tons of steel. This comes to just below 7.5 kilograms per square metre, including purlins, which is extremely light considering some of the roof trusses span 19 metres with considerable live load and bottom cord loading requirements. The design also allowed for supporting 100mmthick FBI insulation between the truss top chords and the purlins. The long-span, Ultra-Span trusses were supplied and assembled on site by Hi-Tech Nail Plate (a licensed MiTek supplier), thereby eliminating transport problems of the large components. Read more here 56 africandesignmagazine.com