Here in Central Calif, we have had some way above average rainfall, and with lots of rain comes leaks not detected before. I do service plumbing on 13 school sites and am running into cracked 3" and 4" no hub C.I. pipe on horizontal runs of roof drain piping. The cracks are long (sometimes 6 feet!) and are always near the top of the pipe in the 10:00 o'clock or 2:00 o'clock position. The buildings are 20 to 30 years old and State inspected and built origionally. The pipe has proper pitch, and supported correctly, no excesive dirt buildup was on the bottom of the pipe. Most piping is run above heated spaces so I don't think freezing was the issue. I'm kind of stumped on this one and would love some of your input.
No announcement yet.
Mysterious cracks in no hub cast iron pipe