Monitoring the long term deterioration of the arches of ribblehead viaduct (TM-CES-042)

This report details one of the several tests being conducted on the Ribblehead Viaduct. This particular test monitors the long term deterioration of arches 1, 2 and 4 of the viaduct. The measure of deterioration is assessed by determining the permanent displacements of several specially positioned targets around the arches.