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ARUP APPOINTS NEW LEADER FOR BUILDING ENGINEERING IN JOHANNESBURG
Effective 1st February 2017 , Heath Andersen will be the new Leader for Building Engineering at Arup South Africa . Andersen said “ This role focuses on identifying and facilitating business opportunities for the Building Engineering team in Johannesburg while ensuring the development of a cohesive and integrated Buildings team across the various engineering disciplines at Arup SA . Arup Southern Africa Leader , Poya Rasekhi added “ I am pleased to announce this new role for Heath . He has a passion for developing people , and he will be responsible for the welfare and social enrichment of the Buildings team while still contributing to his role as Mechanical and Building Services Lead for our Buildings , Johannesburg Group ”. www . arup . com
PERI ENGINEERS ELEGANT SOLUTION FOR SASOL HEAD OFFICE
The unique architectural shape of the new Sasol Head Office building in Sandton made for interesting and challenging solutions throughout the construction of the project . One of these included the roof slab – a 15m span with variously sized downstand and upstand beams , connecting two sections of the building and allowing for the feature inclined glass façade to join into this roof slab from below .
Initially , Aveng Grinaker-LTA considered 45m-high shoring of the entire bridge from the ground floor to the roof slab . This would require tiebacks into the slabs on each side of the building and additional lateral stability . This solution was not possible , as it interfered with the façade installation and programme ; the metric volume of shoring required was estimated at 9,500m 3 . The cost , transport and assembly time were deciding factors . PERI proposed the solution of creating a false soffit at 40m height , using steel beams to span the building . Another 5m of shoring could be safely installed from the false soffit . This solution had no impact on the façade or programme and the volume of material required was significantly less .
It proved to be an elegantly engineered solution , which was simple to erect and dismantle . PERI used their HDT primary beam with inclined HD200 props , which were assembled as individual frames and lifted into position . Premanufactured 533 I-beam units were lifted into position on top of the spreader beam and fixed into position .
MULTIPROP MP350 and MP250 towers were assembled and installed from the I-beam units , with MRK frames , used as working platforms to safely assemble the slab and beam soffits . PERI GT24 girders were used for the slab soffit and downstand beam sides . Stripping of the systems was done in reverse , and the speed and safety of the erection and dismantling at the 40m height made it very successful . www . peri . co . za
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