§ Mr. Spearing
asked the Secretary of State for the Environment what experiments are being conducted by the Road Research Laboratories and the Building Research Station into the effects of heavy vehicles on sewers, water mains, and building foundations; and when he expects to publish the results of such trials.
§ Mr. Eldon Griffiths
Current trials are concerned with the vibrations generated by heavy vehicles and their effects on road pavements. The data obtained will be studied in relation to effects on pipes beneath roads and adjacent buildings.470W
I cannot at present say when the results of his work will be completed.