The failure rate for AC pipe increases dramatically with post installation age.
After 50-years of potable water distribution, the national AC pipe failure rate is about one failure per 10 miles of main per year.
That is thousands ofbreaks and repairs per year ! Aged AC pipe is brittle and is vulnerable to bending fracture due to soil movement.
Operational fractures tend to be circumferential, resulating in larger breaks with larger than usual damage consequences. Between 1950 and
1970, Asbestos Cement Pipe was so popular as to become 45% to 75 % of all driniking water pipe installed in that period. Today, AC pipe is
about 16% of all water mains installed. Several hundred thousand miles of AC pipe have exceeded their 50-year design life, and urgently need
to be replaced.
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To make an inquiry on AC pipe bursting , fill in the form at www.asbestospipebursting.org and click submit.
Then watch the video at : http://youtu.be/zbHRMF4hIbk
There are many excellent sources on Asbestos pipe information from the EPA, NESHAP, Water research Foundation, Battelle Labs, and others.