art 5 Power to deviate
In constructing or maintaining any scheduled work, the Council may— (a) except in relation to Work No. 1B, deviate laterally from the lines or situations shown on the works plans within the limits of deviation for that work; (b) in relation to Work No. 1B, construct the works within the limits of widening for that work; and (c) deviate vertically from the levels shown on the deposited sections to any extent not exceeding 3 metres upwards or downwards.