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-   -   Riser clamp size (http://www.diychatroom.com/f7/riser-clamp-size-194549/)

dgfit 01-22-2014 09:38 PM

Riser clamp size
 
I need a riser clamp to hold a section of my cast iron stack while I cut it. The outer dimension of the stack is 5" so I asked for a 5" riser clamp. But it seems to big. I expected it to wrap pretty close around the pipe but it doesn't. Did I ask for the wrong size?

joecaption 01-22-2014 09:47 PM

Sure it's not a 4" pipe?
http://www.engineeringtoolbox.com/ca...ns-d_1751.html

dgfit 01-22-2014 10:17 PM

I'll check the measurements. Thanks.

joecaption 01-22-2014 10:39 PM

If this is a residential house you have 4" cast not 5".

plummen 01-23-2014 12:29 AM

Quote:

Originally Posted by joecaption (Post 1295301)
If this is a residential house you have 4" cast not 5".

Ive never even seen 5" pipe .
3-4-6-8-10.........

TheEplumber 01-23-2014 12:36 AM

Quote:

Originally Posted by plummen (Post 1295324)
Ive never even seen 5" pipe .
3-4-6-8-10.........

Its rare but it does exist, seen it twice in 25 years.
OP- get a clamp for 4" CI. Lengthen the bolts if needed

tonysteve66 01-23-2014 06:24 AM

Agree with TheEplumber..
We not have much uses of drain iron stack. but if size is your're sayin..5"
the best option in a 4" riser clamp ..
A normal riser clamp have 2" screw.. so it is good with that

dgfit 01-23-2014 09:33 AM

Yeah I remeasured and I don't know how I convinced myself it was 5 inches. Going back to get a 4 inch clamp.

Bondo 01-23-2014 01:00 PM

Quote:

Originally Posted by dgfit (Post 1295271)
I need a riser clamp to hold a section of my cast iron stack while I cut it. The outer dimension of the stack is 5" so I asked for a 5" riser clamp. But it seems to big. I expected it to wrap pretty close around the pipe but it doesn't. Did I ask for the wrong size?

Ayuh,.... There's yer Problem,.....

Pipe is sized by it's Inside Id,...

dgfit 01-23-2014 08:28 PM

The 4" clamps fit great :)


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