Abstract

On 15 May 1991, a landslide occurred at Gacharage Village in the Murang'a District of Kenya; it buried a house near the toe of a cliff, killing all eight residents in their sleep. The principal determining factors of the slide were a high, mechanically unstable slope of deeply weathered volcanic soil and a high sorption capacity of the surface soil layer. The slide was triggered by rapid saturation of the soil following a heavy downpour. Based on field investigations and laboratory studies, this paper discusses the physical properties and environmental factors that affected slope stability at Murang'a. It also points out the economic and social impact of landslides in the region and suggests remedial measures.

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