Expandable rings raise manholesto gradeProblemThe City of Winston-Salem, N.C., annually raises about 100 manholes to grade. “The risers were somewhat difficult to...
Editorial
Manholes and Catch Basins
Entries Tagged Manhole Inspection
Editorial
Manholes and Catch Basins
External sealThe Infi-Shield external seal from Sealing Systems prevents erosion and infiltration in manholes or catch basins. The one-piece molded seal is...
Editorial
Daily Progress
When Bob Donati started working forthe Department of Water and Wastewater Resources in Daly City, Calif., 23 years ago, sewer cameras were...
Editorial
Down the Tube
Accurate visual assessment of the interiors of manholes, boreholes, drilled shafts, or other vertical cavities is essential for efficient planning, maintenance, rehabilitation,...
