frozen city sewer line

06-16-2010, 07:48 PM	#1
marystrand Newbie   Join Date: Jun 2010 Posts: 1	frozen city sewer line how far below the ground does the freezing that causes problems begin at

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06-16-2010, 07:56 PM	#2
concretemasonry Member     Join Date: Oct 2006 Location: Minneapolis/St. Paul, Minnesota - Latitude 45.057 Longitude -93.074 Posts: 3,320	frozen city sewer line If you connecting to a city sewer line the elevation of the existing line is what controls. THis is not the same as the frost level because of the heat normally carried by a sewer line contnts and the. - Not like preventing a footing in an unoccupied building from heaving. Dick

06-17-2010, 07:13 AM	#3
The Engineer Member   Join Date: May 2010 Location: Massachusetts Posts: 133	frozen city sewer line It depends on where your located, up here in the northeast, drainage piping is required to be installed 4 feet below grade, water piping 5 feet below grade. The further south you go, the frost line is higher, so the drainage piping can usually be installed higher in the ground.