In order to mitigate against environmental impact, to satisfy the design criteria and to ensure the long-term integrity of the construction, the Transmission Department of Wales Gas sought geotechnical advice on the routing and design of a major gas transmission system. This system was being built to reinforce the gas supplies to the industrial valleys of South Wales. The opportunity was taken to apply geomorphological mapping at an early stage in route planning so as to avoid abortive design work on alignments which might subsequently prove unsuitable or too costly to engineer (Fig. 1). Pipeline engineers welcomed the approach, which commenced by obtaining an understanding of the client’s objectives and industry design guidance. Working as part of the project team, engineering geomorphologists provided guidance from initial routing studies through detailed design to construction, which was completed without contractual conflict arising out of unforeseen ground conditions.
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This volume presents a collection of papers on techniques and case studies in land surface evaluation for engineering practice written by specialist practitioners in the field. The volume arose out of deliberations by the Second Working Party on Land Surface Evaluation set up by the Engineering Group of the Geological Society in January 1997 and chaired by Dr. J. S. Griffiths. The book examples of cost-effective methods for collecting land surface and near surface data prior to carrying further detailed ground investigations of engineering geologist, geotechnical engineers, geomorphologist and planners who have the responsibility for planning a designing investigations of potential sites of development.