Parabolas can be the only conic sections that are considered functions because they pass the vertical line test. We have worked with parabolas before in quadratic equations, but parabolas formed by conic sections are a little different.
Toilet drainage rough-in steps. 1  Cut a hole in the subfloor just large enough for the bottom part of the toilet flange to sit. 2  If your installing the drainage underground, excavate the trench and have a supply of clean backfill ready (sand or gravel) to grade and cover the pipe.
Newest Subjects. I want to put my toilet 8 feet from the main plumbing stack with a 8 foot run of 3 PVC. right behind my toilet I have access to a 2 plumbing vent from the washmachine which is in my basement right below where I want to put the toilet.Would tapping into that vent provide any better flow? Edited 1 times. want to put my toilet 8 feet from the main plumbing stack with a 8 foot run of 3 PVC. right behind my toilet I have access to a 2 plumbing vent from the washmachine which is in my basement right below where I want to put the toilet. Would tapping into that vent provide any better flow? Edited 1 times.