Remote sensing diagnostic techniques
Cost and time saving preliminary inspections
Main premise is that most of sewer problems occur at or near maintenance holes
Provide good quality imagery up to 20-75 m pipe length
Able to survey 150 to 1525 mm diameter sewers
Colour videos and digital images saved on optical storage devices
Calculate the average wastewater flow, Qavg = (70-80) % of average water consumption.
Select a peak factor, PF = [(18+√P)/(4+√P)], where P = population in thousands.
Calculate the peak wastewater flow, Qpeak = (PF * Qavg)