oa Civil Engineering = Siviele Ingenieurswese - Spreading quality on SANRAL road overhaul : on the cover
The South African National Roads Agency SOC Limited (SANRAL) is known for demanding only the best from the country's road-building fraternity. This is exactly the case with the rehabilitation of the N1 section from Sydenham (km 28.8) to Glen Lyon (km 62.4) near Bloemfontein in the Free State. When completed in May 2017, this road will have a life of up to 20 years, mirroring innovative design characteristics and outstanding workmanship. Johan Acron, project manager at Raubex Construction, Africa's largest road builder, says the high-level design specifications for this road makes it one of South Africa's many flagship projects in terms of road rehabilitation works. Designed by consulting engineering firm, Worley Parsons, the road is made up of 350 mm G4-stabilised sub-base, 120 mm bitumen-treated base (BTB) course and 20 mm ultra-thin friction course (UTFC).
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