Abstract

Several aspects of the urban geology of Kuala Lumpur, the principal metropolis of Malaysia, are discussed. The topics of discussions range from problematical soils to foundations in limestone as well as landslides in hilly terrains. Problematical soils comprise mine tailings, municipal wastes and the collapsed soil zone above limestone bedrock. They are characterised by very poor engineering properties and have been responsible for various incidences of ground settlements and failures. Foundation problems in limestone are attributed to the various solution features that are inherent and are especially well developed in tropical karst, namely the pinnacled bedrock profile, cavities, overhangs, thin limestone slabs and boulders. Landslides in hilly terrains can be related to various geologic features such as the nature and orientation of the rock joints, the soil—rock interface, the thin residual soil cover, seepage and the grades of weathering. The influence of grades of weathering on various physical properties of the rocks are also discussed. The various topics of discussions are illustrated with actual examples or case histories in the Kuala Lumpur area, based mainly on the authors' experiences or personal involvements with the construction industry in the last decade.

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