1/16 per inch BUT the pipe must be at least 8" diameter and then only 1440 Fixture units can be connected
If you increase pitch to 1/2" per ft then you can go up to 2300 fixture unites
Yes, termites can live in sewer lines.
Outside diameter (OD) of adjacent manholes (including the bottom slabs) should have minimum of five (5) feet horizontal clearance.
Of course.
4" is the standard house sewer main
1%
You DON'T
Yes, sewer lines can freeze during cold weather if the temperature drops low enough for an extended period of time. This can cause blockages and potentially lead to damage in the sewer system.
Yes, but normally it is an extra
A sewer contractor repairs and maintains existing sewer lines in addition to constructing and installing new ones. These jobs can be for residential and/or business clients.
1% pitch is min
yes
A little more detail about the sitsuation would help. New construction, remodel, sewer outlet in the house to street or sewer outlet in house to main going out of house.