MS Heavy Construction Practice Questions - Mississippi Heavy Construction Contractor Examination Exam

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On a buried ductile-iron water main in corrosive soil, DIPRA's generally recommended external corrosion-control method is:

Polyethylene encasement installed in accordance with ANSI/AWWA C105/A21.5 A full-length reinforced-concrete encasement of every pipe length Leaving the asphaltic shop coating as the only protection, with no additional wrap Wrapping only the bells with electrical tape after the trench is backfilled

Correct Answer:

Polyethylene encasement installed in accordance with ANSI/AWWA C105/A21.5

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