kmuddzy
Member
Hi. I am putting in 3" and 2" pipe underneath an existing 1st floor. there is a basement so I have full access to the floor joists bays but there is an existing plumbing line I that I need to slope to.
1) The 2" kitchen sink drain runs through the floor and transitions to horizontal with a sweep elbow. The 2" pipe starts snug against the subfloor so I can get the correct pitch and runs for 22 feet before another horizontal sweep wye connects to existing sewer line. I plan to put a cleanout at this sweep wye but it will obviously not be oriented toward the 22foot run.
Questions:
Do I need a cleanout in this 22' long run? If so, how long can I run before I need a cleanout?
How do I install the clean-out since I can't orient a Tee vertically and if I orient a wye horizontal I only have at most 12" of clearance between joist and cleanout (Bert's plumbing guide says 18")?
2) I have a 3" stack collecting the 2nd floor plumbing and it transitions to horizontal underneath the 1st floor with a vertically oriented long sweep ell. Before this sweep ell, I have a Wye cleanout. The vertical sweep ell is immediately connected to a horizontal sweep ell inside the joist bay and the pipe runs through the rim joist into the basement. The pipe connects another horizontal sweep elbow that turns down about 45 degrees while it turns 90 degrees horizontally.
You can see in the pics below that I stuck in a wye cleanout but it is almost horizontal and it is very tight behind it since it is inside a joist bay and faces the rim joist. Even if I was to move the wye next to the sweep ell it would still be oriented almost horizontal and access would be less then 18".
Questions:
I know Berts plumbing guide says a cleanout is required after 135deg of horizontal change but do I need this cleanout if the second sweep ell is only 6 feet from the stack cleanout?
If so, is there a better way to install the cleanout in this situation?
Last question: At what point is an elbow fitting not considered a horizontal change? i.e. is 45 degrees the magic number where greater than 45 is considered vertical and less than 45 degrees considered horizontal?
3" elbows from stack
3" piping from 3" elbows in pic above
1) The 2" kitchen sink drain runs through the floor and transitions to horizontal with a sweep elbow. The 2" pipe starts snug against the subfloor so I can get the correct pitch and runs for 22 feet before another horizontal sweep wye connects to existing sewer line. I plan to put a cleanout at this sweep wye but it will obviously not be oriented toward the 22foot run.
Questions:
Do I need a cleanout in this 22' long run? If so, how long can I run before I need a cleanout?
How do I install the clean-out since I can't orient a Tee vertically and if I orient a wye horizontal I only have at most 12" of clearance between joist and cleanout (Bert's plumbing guide says 18")?
2) I have a 3" stack collecting the 2nd floor plumbing and it transitions to horizontal underneath the 1st floor with a vertically oriented long sweep ell. Before this sweep ell, I have a Wye cleanout. The vertical sweep ell is immediately connected to a horizontal sweep ell inside the joist bay and the pipe runs through the rim joist into the basement. The pipe connects another horizontal sweep elbow that turns down about 45 degrees while it turns 90 degrees horizontally.
You can see in the pics below that I stuck in a wye cleanout but it is almost horizontal and it is very tight behind it since it is inside a joist bay and faces the rim joist. Even if I was to move the wye next to the sweep ell it would still be oriented almost horizontal and access would be less then 18".
Questions:
I know Berts plumbing guide says a cleanout is required after 135deg of horizontal change but do I need this cleanout if the second sweep ell is only 6 feet from the stack cleanout?
If so, is there a better way to install the cleanout in this situation?
Last question: At what point is an elbow fitting not considered a horizontal change? i.e. is 45 degrees the magic number where greater than 45 is considered vertical and less than 45 degrees considered horizontal?
3" elbows from stack
3" piping from 3" elbows in pic above
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