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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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6,868
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We are doing a jack and bore in Phoenix, Arizona. City of Phoenix is concerned about the life expectancy of 48" Steel Casing Pipe. We are thinking of using the casing pipe as a storm drain. The City is requesting a life expectancy of 75 years. Field resistivity of the soil is 4711 (ohm/cm). Will a 1/2" thick casing pipe be thick enough?
 
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