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Life Expectancy of Steel Casing Pipe

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cvg

Civil/Environmental
Joined
Dec 16, 1999
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Doing a jack and bore in Phoenix, Arizona. City of Phoenix is concerned about the life expectancy of 48" Steel Casing Pipe. The City is requesting a life expectancy of 75 years. Field resistivity is 4711 (ohm/cm). Will a 1/2" thick casing pipe be thick enough?
 
Something to investigate is cathodic protection. It will require maintenance (replacement of the anodes) over time; but, saves the casing.
 
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