I refer to the letter Nether Regions from David Howarth (NCE last week) commenting on the debate on disruption caused by services in urban areas, and what the Dutch do to overcome the problem.
From the planning and execution of Stevenage new town from 1946, standard layouts of all services in the combined footpaths and grass verges were carried out, even following the sweeping curves of neighbourhood roads where these were required. This included the surface water and foul sewers.
As far as I am aware no difficulties arose in maintenance since, from a location viewpoint, all services could be measured from the road kerbs.
Not only did the eminent engineer in charge, Eric Claxton, have the foresight to adopt this design, he also instigated roundabouts at all major road intersections and cycle tracks adjacent to all such roads in the town.
Allan Atkins (M), 153 Tolmers Road, Cuffley, Herts, EN6 4JP