Most of the corrugated roofing sheets have damaged due to tearing out at its corrugations by high wind loads and impact loads. The strength of these corrugations can be improved with fibre reinforcement, as the fibres are the crack arresters and absorbs energy. In this paper natural fibre namely sisal fibres are used as reinforcement in cement matrices for producing corrugated roofing sheets has been investigated and reported. Flyash-based sisal fibre roofing sheets were cast manually and the

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... rength of the corrugations of the above composite sheets in terms of splitting, due to direct and impact loads, were experimentally evaluated. It is found that the strength towards splitting of corrugations of the flyash based sisal fibre corrugated roofing sheets due to direct and impact loads was improved as compared to the corrugated sheets without sisal fibres. Also it is observed that flyash based sisal fibre reinforced sheets are comparable to the splitting of corrugations due to direct and impact loads of a commercial roofing sheet, available in India.