oa Civil Engineering = Siviele Ingenieurswese - Design and construction of the Kowyn's Pass rockfall shelter



The site of the Kowyn's Pass shelter is situated on the road traversing the escarpment between Graskop and Bosbokrand in the north-eastern Transvaal. The area was subject to a major fall of rock In 1973. Further falls, however, continued after the suspect area was anchored. The Transvaal Provincial Roads Authority decided towards the end of 1977 to construct a reinforced concrete rock fall sheller as a permanent and fall-safe protective measure. The design of the structure, of which construction was completed in August 1980, is discussed in the paper. A brief review of the state of the art of designing rockfall shelters against impactive loading is also presented.


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