Rolling out Cape Town’s BRT network

C&CI-concrete-pouring-on-CT-BRT-constructionThe first phase of Cape Town’s new Bus Rapid Transport (BRT) system provides extensive links from the inner city to Paarden Eiland and Bloubergstrand with stops at strategic points such as the new Cape Town Stadium and Century City. By 2018, after the completion of all seven phases of the project, the BRT network will extend all over the peninsula, including Atlantis.

For the construction of the city’s BRT network, the Cement & Concrete Institute (C&CI) was called on to provide consulting services and training. The BRT’s dedicated lanes, running mainly along the middle of existing streets, are built as continuously reinforced concrete pavements – marked with a distinctive red pigment. The stations are constructed in concrete and enclosed with glass, providing shelter from the weather.

 

Bryan Perrie, managing director of C&CI, says the continuously reinforced concrete pavements (CRCP) were designed using cncPave, a purpose-designed computer program developed by C&CI. cncPave, which is a Fulton Award winner for excellence in concrete, facilitates competent decision making in the design of concrete pavements.

“C&CI was also consulted during the design process and provided input on ways of countering plastic shrinkage cracking in the concrete that could be caused by the hot, dry winds of the Cape summer.

“At AfriSam’s request, the institute also ran a half-day workshop on CRCP construction for all the parties involved,” Perrie adds.

Cape Town’s BRT system is designed by civil engineering consultants, Hawkins Hawkins & Osborn in association with Vela VKE. The readymix concrete for the first phase of the project was supplied by AfriSam from its Woodstock and Peninsula Quarry facilities. Jaco Cokart, works manager for AfriSam’s Aggregate & Readymix Cape division, designed the concrete mix.

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