Drain pipe cleanout callout IE 601.5+- 1

[Yagonyonok]

Sorry if this is a dumb question, but it is outside my normal area, so I’m not real familiar with this callout.

I have been asked to prepare a set of site drawings for a small project, and have been given an old drawing to use as a reference. On the old drawing the drain cleanout is labeled
“CLEANOUT
IE 601.5±”

Looking it up on Google makes me think it is some sort of materials requirement for drain cleanouts, but I haven’t been able to find the actual standard, only vague references to it.

Can anyone tell me where I can find the standard? I really don’t want to call out a spec when I have no idea what it is. Thanks in advance.

 

[jgailla]

That could mean "Invert Elevation at Elevation +601.5 feet".

 

[Yagonyonok]

I think you are right. Looking at the old drawing it shows elevations and it is right around the 600' mark.

Thanks for the quick help.

 

[AAEC]

The point the elevation is referring to is the inside bottom of the pipe.