Posted 11/19/2009 23:36 (#931193 - in reply to #931071) Subject: Re: tiling question on grade for mains and laterals
SE MN Still in Pothole Country
In theory the main is where you shoud try and keep grade. BUT there will probably be enough water flow in the main to keep silt clean. It you have flat laterals they will be more prone to silt up.
tiling question on grade for mains and laterals
