Housing in Southern Africa March 2016

Roofing, Ceilings, Insulation and Cladding

Flagship projects

W ith a proven track record, quality products, perfor- mance and delivery, the company has an extensive supply network throughout the region. JubileeMall is located inHamman- skraal, 30km north of Pretoria and is a state of the art mall, which covers 52 000 m² and accommodates over 100 retail and speciality stores. Giant Engineering specified MiTek’s Ultra-Span roofing system. The project required 350 trusses and 4 600 m² of the MiTek Ultra Span system. The initial plan was to erect the roofing system in four weeks but Giant Engineering completed the project in just 14 days, which enabled the company to save almost 50% on labour costs. Architect Dirk du Preez of Grace- land Architects was taskedwith over- seeing construction of the Mediclinic in Kimberly. The project required 10 800 m² roofing structure and clear spans of 25mwere specified. Roofing specialist and MiTek licensed truss Leading roof truss system supplier, MiTek, has provided r oo f i n g s y s t ems on a number of flagship projects throughout South Africa and neighbouring countries.

supplier, Central Roof Industries, installed large shallow pitched Ultra- Span roof trusses. Timber trusses were obviously not considered due to the large spans and the fact that the roof had to be made of non- combustible materials. Trusses were assembled on site into braced pairs and hoisted into po- sition on the building in accordance with a strict time-line of the various buildings being completed for roof erection. Each installed roof section then had special purlin raiser blocks fitted (to allow for the required thick roof insulation) in conjunction with the support wires for the insulation blanket. This was followed by the fitment of the LGS purlins into the raiser blocks before the fitment of the roof covering of Klip-Lok sheeting. This method ensured that the roof sections were in fact fully completed in appropriate portions and were

accordinglyalso inspectedandsigned off by MiTek.All the required services inside the roof void (which included in some instances the support of medi- cal equipment) were easily installed and accommodated. This required some site alterations but it was easily and quickly accomplished. Both the architect and project en- gineer were impressed by the speed of completion as well as with the overall neatness of the roof structure. The entire 10 800m² roof structure with a mass of 125 tons of LGS plus sheeting and insulation was com- pleted in approximately 14 weeks. The speed of erection ensured a total saving of 16% compared to utilising a hot-rolled steel structure. The roof- ing structure cost R4,5 million of the R220 million project. For further information con- tact MiTek on 011 237 8700 or go to www.mitek.co.za ■

March 2016