It was measured using a parallel hose C-factor test and we intend to do the same after it is lined. I am looking for what numbers to expect after lining. Yes the numbers are now very low (there are two different streets) hence the need to clean and line the mains.
We are cleaning and lining old 6" dia. cast iron water mains. What Hazen-Williams C factor should I expect once completed? They are currently 16 and 31.
