Architect and Builder Magazine South Africa Dec 2017 / Jan 2018 - Page 95

Nyeleti developed, others remained skeptical about the idea until the completion. However, BMW’s senior management (both locally and internationally) were convinced and Nyeleti received approval to continue with detail design and tender documentation. The working restrictions of this project had a significant impact on progress, and some portions of the work took longer than anticipated. The interface between the new and existing building was more complex than expected, and required an extensive group effort to resolve. Value Engineering Teichmann Structures proposed two value engineering options to the design concept which were adopted. Instead of assembling the columns in sections from the ground up, the columns – 600x600x16mm steel square hollow sections, each 12.8m long – were fabricated as a complete unit and lifted onto the roof structure. Each column was rolled horizontally into position, using a trolley on temporary rails on top of the roof structure. Once in position above the foundations, the column would be tilted 90˚ to a vertical position, and then lowered through an opening in the roof onto its foundation. The proposed working platform would have been a temporary structure spanning across one of the internal roads. This was revised to be a permanent (pre-cast concrete) structure located one bay westwards of the original position. Steel Awards The plant was programmed to commence vehicle assembly in the last week of January 2017. The entire team had to work 24-hour shifts over the December (during the construction fraternity break!) to meet the handover-deadline to the H-EMS contractor. Practical completion was achieved at the end of December 2016 and the assembly of vehicles started on time. The completion of the interface between the new and existing roofs took longer than anticipated, but operation of the assembly line was unaffected. Today BMW has an assembly plant that conforms to their specifications with an assembly process that is ready to start manufacturing the new X3-series in January 2018. Client: BMW South Africa Structural Engineer: Nyeleti Consulting Temporary Works Engineer: ARQ Consulting Engineers Main Contractor: Teichmann Structures Steelwork Supplier: Boksan Projects Steel Erectors: Teichmann Structures; Valoworx Cladding Contractor: Roofing Guarantee Company Corrosion Protection/Paintwork Contractor: Dram Trading Hyd