Modern Quarrying Jan-Feb 2018

FACE TO FACE WITH GKC

The Kalbaskraal project is located on the N7 Section 1, between Atlantis South (26,3 km) and Kalbaskraal (39,1 km) north of Cape Town.

Tait says that although the group focuses mainly on new roads, bridges and resurfacing, it has also moved into struc- tural concrete.“We entered the renewable energy market in 2013 and have to date completed turbine wind farms on the N7 near Vredenburg (47), a 43-turbine wind farm just before Port Elizabeth and three at Komga, north of East London. “We have also moved into the marine construction environment with the reha- bilitation of keys, construction of small craft harbours and large jetties and reser- voirs,” he adds. H&I’s expansion and diversification of construction services over the past 33 years has led it to market-leading status, but with innovation and entrepreneurship

The project is located on the N7 Section 1 between Leliefontein (39,1 km) and Abbotsdale (49,1 km) close to Malmesbury, north of Cape Town. It comprises upgrading the existing sin- gle carriageway to a dual carriageway with 2 grade separated interchanges at Abbotsdale andTierfontein. It includes the construction of minor and divisional roads to provide controlled access to adjacent properties, in the order of 12,0 km. Before any construction could commence, 10 km of Telkom optic fibre had to be rerouted from the RHS to LHS of the new carriage- way alignment. These optic fibre lines tra- verse all the way back to Atlantis and enter the sea at Melkbos, and then run up the East Coast under the sea to the UK.

deeply ingrained into its fabric, the com- pany is certainly not resting on its laurels. Some of the structures currently underway by H&I include: • Bonnievale: The work included the fixing of 10mx 350mm steel strength- ening plates to the soffit of the exist- ing bridge around the top section of existing piers, jacking up the existing bridge and replacing all the bearings and finally widening the existing deck to both sides; all of which was done over the environmentally-sensitive Kogmanskloof River. Although not a big contract in volume or in monetary terms, it was technically challenging with the key to success being detailed planning and adaptability to change. The bridge jacking operation was car- ried out by H&I and the team lead by Robert Dawson and Stephan Nel is looking at a planned completion date of March 2018. • N7 Hopefield Interchange: The scope includes reinforced earth-re- taining walls, three post-tensioned The Bonnievale project is located on the provincial road connecting Robertson and Bonnievale. Work started at the Kogmanskloof Bridge going through Bonnievale and stops 2,0 km on the other side of town. The project is 17,5 km long and consists of a rural section (13 km), peri-urban section (4,0 km) and urban section. The project is situated in the heart of the Robertson Wine Valley, where it is surrounded by hectares of vineyards overlooking the Breede River.

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MODERN QUARRYING Quarter 1 / 2018