Pilot Study to Test Site Use of Pipe Defect Classification and CRODISS Systems

摘要

The report describes a Pilot Study to test the feasibility of using a coding system and suite of computer programs (CRODISS) for recording the defects observed in closed circuit television surveys of pipe sewers. The system was tested in surveys at four sites, totalling 6.7 km in length, with sewers under highways from 150 mm to 300 mm diameter. Both winched and self-propelled closed circuit television camera methods were used for the surveying operation.