Author(s)

J.G. Dickens & P.J. Walker

Abstract

The results of structural monitoring over a four year period of the dry-stone walls at Great Zimbabwe National Monument are summarised. The 'stick-slip' movements observed in the monitoring results are discussed in relation to rainfall records. Laboratory tests to determine the physical properties of the granite blocks and the joints between are briefly described. The laboratory test results highlighted the small contact area between blocks and the 'stick-slip' shear stress characteristic observed in shear box tests on mismatched joints mirrored the movement characteristics observed in the on site monitoring. 1 Introduction The authors have conducted a rigorous investigation into

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