I need to replace an old cast iron drain line. The house has a finished basement with concrete floor, partiton walls used for rooms and closets. Digging up the existing drain line to run the new line along the same route would involve a lot of work a demolition.
I would like to re-route the new line in ABS and run it through walls.
This would involve more turns than the existing line has.
It looks like the existing line has one turn at the bottom of the stack as it goes to horizontal.
For simplicity sake, lets call the bottom of the stack point A, and the point where the line exits the house point B.
I would be adding approximetly 5 more turns on the new line to get from point A to point B.
Can I do this so long as I keep the correct drop?

Jesse M
[email protected]

Hus4950: ABS pipe is easy to work with and fittings are cheap. To make 5 turns on your new pipe, use 45 degree bends to get from point A to point B. If you are tight on space, use Street 45 degree bends. They will give you few more inches work with. Now, if you have plenty of space than try no to cluster them in one space: spread them over the length of the run. Let us know how you did...

Please explain farther. What size is the drain line? What fixture, or fixtures will it service? I will give you my opinion on using five elbos in a drain after you tell me what it's draining. Regards, Tom

I need to replace an old cast iron drain line. The house has a finished basement with concrete floor, partiton walls used for rooms and closets. Digging up the existing drain line to run the new line along the same route would involve a lot of work a demolition.
I would like to re-route the new line in ABS and run it through walls.
This would involve more turns than the existing line has.
It looks like the existing line has one turn at the bottom of the stack as it goes to horizontal.
For simplicity sake, lets call the bottom of the stack point A, and the point where the line exits the house point B.
I would be adding approximetly 5 more turns on the new line to get from point A to point B.
Can I do this so long as I keep the correct drop?

Explained another way:

The house has only one bathroom. I will be replacing cast iron 3" servicing a toilet, lavatory and shower.
The existing stack goes into the ground and turn horizontal in a straight line to the city connection.
Since I cannot dig up the existing drain line which is under earth and concrete floor, I would like to run it above which would be under the floor joist of main floor.
As I said, I would be running it through partition walls in the basement which envolve about five ninety degree turns more than the line has from stack (point A) to the point where it exits the house (point B).
My main concern was, am I putting too many turns on a 3" drain line servicing a full bath or am I OK so long as I keep the proper 1/4" drop per foot and use long sweeps for horizontal turns?

Ouch!
How much fall from point A to B
Have ever had problems with slow drainage? Do you have a good vent system now and if necessary can a new vent be added onto new proposed line?
Along this new "run" is to keep new line along the walls and punch through the partition's and or just build a soft through a room to get trough that room and eliminate some bends. Then paint soffit and better finished run?
IS there room for a "long sweep 90" This is a 90 that is a much longer elbow to soften the 90 and turn waste better Also is there room for a T connection in the design for a clean out to be installed for possible problems to snake it out for a clog?
Can two 45 elbows be used together to make a 90 turn? Horizontal runs with a turn can be a low slope bit speed and gravity is the two Constance's. Can you get high on floor joist to start run? Important ( How many feet of travel on new run?

I think this is a double post.

As answered few days ago: use 45's . If lack of space, use them in combination with street 45's. If replacing vertical to horizontal fitting then use Y and 45. Keep clean outs. They are important feature on your sewer run.

I saw this post yesterday and I looked at it and it was directed to speedball so I left that one alone and not to get in between out of respect to speedball and Hus4950. Then I saw another post where speedball asked a question and was waiting for answer. Hear it is again.
Good day gentlemen
21 boat.