oa Civil Engineer in South Africa - Dolomites : problem soils in South Africa - state of the art



Damage to structures and loss of life have been far more severe on dolomite than on any other geological formation in South Africa. The subsidence which occurs on dolomitic terrain following development or during dewatering has given dolomite a notorious reputation and many developers have become reluctant to build on it. The problems experienced in this country have led to the pioneering of investigation and founding methods for dolomite sites. In this paper methods of site investigation best suited to the different types of dolomite site are presented. A method of classifying the site in terms of overburden thickness is given, followed by a review of the evaluation methods in use. The paper also discusses various methods of construction.


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