Manhole Inspection

A manhole inspection is performed in order to accurately inventory the assets of the collection system, to update collection system maps and to determine the structural condition of each manhole. During manhole inspection, ADS Environmental Service"s field crews take a complete inventory of each manhole including construction materials, ring size, depth to invert, flow conditions and evidence of surcharge. All inventory information is recorded in the project database and can be used to develop maintenance and repair programs. ADS also uses digital camera equipment during manhole inspection to document defects that may be discovered.