oa Civil Engineering = Siviele Ingenieurswese - The phenomenon of heaving foundations



It had been, shown that in the highveld areas of South Africa, where the problem was most acute, movements of structures showed a general upward trend on which was superimposed a seasonal variation, as opposed to the purely seasonal variation reported in England.1 It was therefore interesting to examine movements recorded in an area of South Africa which might approach English conditions. Fig, 1 showed the results of movement records on a badly cracked hall in Rosebank, Cape Town. The records were commenced approximately four months after completion of the hall, by which time severe cracks, of the order of 1 in wide had opened up, been repaired and had re-opened to the same extent


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