sink drain pipe pitch?

[61falcon]

how much of a downward angle is a drain pipe supposed to have. its x amount of drop per x amount of feet in length but what are the correct measurements. this is for a kitchen sink drain.

 

[davedriveschevys]

1/4 inch per foot

 

[KPSquared]

Yup. 1/4" per foot is all a plumber needs to know.

 

[davedriveschevys]

Yup. 1/4" per foot is all a plumber needs to know.

Hot goes on the left and **** goes downhill!

 

[KPSquared]

Oh Ya. And that. . .

 

[Tig Master]

Hot goes on the left and **** goes downhill!

Also payday is Friday.

T

 

[jhelrey]

and lunch is 1 hour... regardless!

 

[kbs2244]

I never had enough length to ever worry about it.

 

[Big-Foot]

I never had enough length to ever worry about it.

Exlax works wonders in that department!

 

[61falcon]

so a 45ft pipe should drop about a foot??

 

[Jbullfrog]

so a 45ft pipe should drop about a foot??

Yes, if you want it to drain properly

 

[61falcon]

the reason i asked this is i have a drain pipe leaking. i have a home warranty and the plumber they sent out said the copper pipe is leaking because the pipe isnt at the correct angle and the water is sitting in the pipe causing it to corrode and leak. he estimated the pipe at 45 feet. i measured and it drops almost 15 inches from from start to finish.

 

[nmk_61802]

Is the copper type K? Illinois plumbing code requires type K copper when buried. 1/4" per foot is the min. slope for up to 3" diameter. Larger than 3" varies according to IPC. Not sure of Ohio's Plumbing code.

 

[2-0turbo]

the reason i asked this is i have a drain pipe leaking. i have a home warranty and the plumber they sent out said the copper pipe is leaking because the pipe isnt at the correct angle and the water is sitting in the pipe causing it to corrode and leak. he estimated the pipe at 45 feet. i measured and it drops almost 15 inches from from start to finish.

What year is the house/plumbing? I've got a rental built in 1978 and I've had to replace several drain lines, especially the elbows at the outlets of the toilets. The waste just sits there and corrodes thep pipes. No idea what type of copper it was. But, the failure is pretty common. My plumber called it before opening up the ceiling.

 

[BD1]

Also payday is Friday.

T

DO NOT CHEW YOUR FINGERNAILS !!!!!!!!!!!!!

 

[rodm1]

What year is the house/plumbing? I've got a rental built in 1978 and I've had to replace several drain lines, especially the elbows at the outlets of the toilets. The waste just sits there and corrodes thep pipes. No idea what type of copper it was. But, the failure is pretty common. My plumber called it before opening up the ceiling.

urine is very corrosive and will eat threw copper. I believe it's code to use PVC in urinals do to this fact.

 

[Tim The Tool Man]

Your plumber is wrong, there is enough pitch unless you have a dip that you did not mention. Copper corrodes over time and is no longer used in drains because as rodm1 stated about urine and the like and primarily because of cost. I would cut that copper out and replace it with PVC. Take the scrap copper to the salvage yard and you'll get enough cash to pay for the PVC and a case of beer!

 

[brewchief]

the reason i asked this is i have a drain pipe leaking. i have a home warranty and the plumber they sent out said the copper pipe is leaking because the pipe isnt at the correct angle and the water is sitting in the pipe causing it to corrode and leak. he estimated the pipe at 45 feet. i measured and it drops almost 15 inches from from start to finish.

Sounds to me like home warranty company is looking for a reason to not have to pay for any repairs.