The Bangalore Water Supply and Sewerage Board (BWSSB) will soon issue guidelines on restoration of roads after water and sanitary pipelines are repaired. BWSSB Chairperson T.M. Vijay Bhaskar said that currently, mud from the same spot is filled in after the repairs. “There may be some loss in mud. Road repairs can be taken up only after proper soil consolidation. Under the new guidelines, we have suggested use of quarry dust. This will add to the strengthening process and ensure that the road does not cave in,” he said. The guidelines are expected to be issued some time next week.