NMDriver wrote:
soren wrote:
Assuming that this is in Florida, it's a pretty easy issue to deal with. If you have enough drop from the valve to the inlet, you can use an adapter to a thinwall rigid plastic plumbing pipe, often called "Schedule 10" or "Sewer and Drain". this stuff is inexpensive, available at HD and Lowes, and has a bell end, so you just glue it together without needing couplings. After you are done, it can be easily hand sawn into small pieces and tossed in the dumpster. To clarify, you need at least 1/8" per foot of drop to make this work, at least 5" overall, not 12, as another poster claimed. As a Fl. snowbird, I see this done frequently in these parts. I just pointed one of these set-ups out to the wife, while walking through a campground. It was an above ground run of the pipe I mention, about 90-100' long, with two 90* turns from the trailer to the inlet. If you do this, as mentioned, you still need to follow RV protocol of keeping the black tank closed until it's relatively full. I would also fill the gray tank, and use that water to flush the line, after you dump the black.
1/8th is a minimum for 3-6 inch pipe. For any run from 40-50ft 10-12 inches will be better. BTW: I am state certified in NM as a septic installer.
Yea, licensed builder, electrician and more, so I don't get too excited about expert opinions. As you well know, an 1/8" will work just fine, and a 1/4 would be more desirable. The point is thay the whole idea doesn't get scrapped, since the OP took a look and said, "well, that won't work, I'll never get a foot of drop". BTW, while doing remodeling and renovations, I have repeatedly seen 3" and 4" waste lines under homes, with zero and even slightly negative pitches. I always ask if there have been blockage issues in the past? If the pipe in question is PVC or ABS, the answer is always no.