I am laying down DWV piping under concrete slab. How do I ensure proper constant slope from a fixture to main stack? There are a lot of fittings used.
Ensuring proper slope
Aug 10, 2003
3 Replies
If it's in a straight line, lay a long 2 X 4 along the pipe to ensure the run is reasonably straight. You want approx 1/4" per foot slope. Mark your level at the
1 foot length and tape a 1/4" shim there and you can check individual sections.Jim
OR you could just use an angle finder at or about 40 degrees is what most building codes for. Terry Lewis Contracting
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required