oa Civil Engineering = Siviele Ingenieurswese - Practical experiences of piled foundations in expansive soils

Volume 5, Issue 9
  • ISSN : 1021-2000



With the discovery of gold in the Odendaalsrus, Welkom and Virginia areas, a considerable building programme became necessary. The sub-strata in these areas were found to consist of expansive clay formations, which tended to heave upwards under the centre of newly constructed buildings with resultant cracking of both the foundation beams and the superstructure. As a result of subsequent research and experience, it was found that several possible methods of construction gave a reasonable measure of safety. This paper is confined to a discussion on the use of concrete piles with greatly enlarged bases to act as anchors against the upward movement.

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