Just like plumbing a DWV system. One may be able to find a retired HVAC guy or teacher in the area by posting on craigslist or asking at supply houses. In all the trades I’ve learned there is always someone who has the knowledge to share but isn’t in business anymore. Just make...
installation, sewer gases produced in the septic tank find their easiest escape path back up through the scum layer and into the septic tank inlet tee and from there up the drain waste vent (DWV) system to the building plumbing vent stack system where gases are vented above the building ...
Many plumbing installations use sch40 with DWV fittings. Check out http://www.harvel.com They have information on burial, and they make schedule 40 and SDR pipe. The other one to look at would be Charlotte Pipe ( http://www.charlottepipe.com) Upvote 0 Downvote May 29, 2007 #3 ...