To SteveWag and bimr:
Thanks for the suggestions. I should have stated that the district is the reviewing agency, our client is a major developer, and wants to operate and maintain the water and sewer systems themselves (having many such systems around the country). Therefore, while in general...
We are working with a sewage district that REQUIRES bar screens in sewer manholes under certain circumstances. Primarily, they require bar screens in the uphill manhole just before any steep section of gravity sewer. This seems like a very bad idea, with a lot of headaches for the system...
If the carrier (the pipe that actually has the water in it) is reasonably straight, AND you can reasonably get secure power to one end, you can insert a heat trace INSIDE the pipe, that should keep the pipe from freezing. The steel? pipe with the foam inside is typically called the "sleeve" or...
