Stress and thermal analysis of the 'Muela Dam, Lesotho Linear, thermal and nonlinear analysis Crack propagation evaluation Dam stability and optimum curvature proved LUSAS Civil & Structural analysis software has been used by consulting engineers Mott MacDonald in conjunction with FEA's consultancy services department to prove the stability and optimum curvature and pro?le of the 'Muela Dam, part of the Lesotho Highlands Water Project. The 55m high dam with a crest length of 200m forms the tailpond of the 'Muela hydropower project.A full 3D model of the dam and its rock foundation was de?ned in LUSAS Civil & Structural using 8-noded enhanced strain elements with 4 elements across the width of the dam and at 2.5m height intervals. In all 9528 elements were used to de?ne the dam model inclu

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