Sewer Sense No. 16
by NCPI, 9/1/2004
Pipe stiffness-what is it/a case of permanence-100 years of service for San Francisco's cable cars and clay sewers/a case of impermanence-20 year old substitute materials sewer lines fail/NCPI was there in a big way/from pit to pasture
concrete sewer, lining, truck sewer, cement bonded, sulfide, EPA, Water Pollution Control Federation, 42" diameter pipe, pit mining, conservation