Abstract
Any occurrence of cracking in masonry structures needs the correct diagnosis of the cause to be made in order that suitable remedial action can be taken. In order to do this a wide range of expert knowledge is required by the investigating engineer. This paper describes the development and testing of an intelligent knowledge based system (IKBS) which will aid engineers carrying out these types of investigations. Particular emphasis is given in the paper to knowledge acquisition and the subsequent testing of the IKBS and these issues are addressed in some detail. The paper also highlights the importance of not only using knowledge to prove causes but also to disprove causes.The use of knowledge to disprove causes is shown to lead to shorter consultations and more accurate conclusions.
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