Help with Soil Pipe Please!!

[monkeywest]

Hi Folks

Experienced help and advice please.
I have a cast soil pipe in small riser about 50mm from the wall.I would like to replace the connections section with plastic but would like to know if i can cut just above the flange which is only just above floor level because i can't cut any lower because of the concrete floor,and connect a rubber coupler to join a plastic pipe and boss section? cutting the upper part of the pipe dosen't appear to be a problem.

can take some better pictures tomorrow if needed

many thanks

jon

Untitled

• monkeywest
• 12 Mar 2014
• 1

 

[newbuildinstaller]

http://www.drainageonline.co.uk/Pan...onnector.htm?gclid=COGd3I77jb0CFQEXwwodxUAAcg

cut it and use one of these (if the cast is 4") you can get em with 1.5" side connections too

 

[monkeywest]

http://www.drainageonline.co.uk/Pan-Connectors/Grey-110mm-Drain-Connector.htm?gclid=COGd3I77jb0CFQEXwwodxUAAcg

cut it and use one of these (if the cast is 4") you can get em with 1.5" side connections too

Thanks - wasn't sure if the ribbed end would go above the flange.I'll measure it tomorrow.when you say 4'' is that the external measurement? ive added another picture showing the waste pipe coming in.i hope the bend from this ends with enough room left to cut the soil pipe?

Untitled

• monkeywest
• 12 Mar 2014
• 1

 

[Blagard]

The 4" is internal size the outside is usually at least 4 1/4" on the plain pipe.

In one of your photos it looks like the top of a joint collar at the very bottom of the stack.

The following connector sits inside the collar without the narrowing of the finned type of connector and is cemented in place - ideal if you can access such a joint collar by taking out the old cast pipe going into it. Then you can fit all manner of PVC fittings like a branch with a side boss similar to your cast iron arrangement.

http://www.ukhps.co.uk/products/FloPlast-SP107G-110mm-Ring-Seal-Drain-Connector-Grey.html

One way to extract a cast iron pipe from a collar is to cut the pipe just above the collar then drill out the jointing material until you can extract the remaining pipe stub like a rotten tooth!

 

[monkeywest]

The 4" is internal size the outside is usually at least 4 1/4" on the plain pipe.

In one of your photos it looks like the top of a joint collar at the very bottom of the stack.

The following connector sits inside the collar without the narrowing of the finned type of connector and is cemented in place - ideal if you can access such a joint collar by taking out the old cast pipe going into it. Then you can fit all manner of PVC fittings like a branch with a side boss similar to you cast iron arrangement.

http://www.ukhps.co.uk/products/FloPlast-SP107G-110mm-Ring-Seal-Drain-Connector-Grey.html[/QUOTE]


It is a joint collar i think - yes but it is below the floor.How do i get the pipe out? leaving the collar intact? i can't cut it flush as there is no room to get a saw in there

Thanks again

 

[Blagard]

See edit above

One type of joint, that is typical, lead and fibre sometimes capped with a cement fillet so fairly easy to drill
http://encyclopedia2.thefreedictionary.com/caulked+joint

If your remaining pipe is a bit long you could try a long masonary drill but I would suggest 5mm max diameter e.g.
http://www.ebay.co.uk/itm/Irwin-160...l-Bit-4mm-5mm-5-5mm-6mm-7mm-8mm-/110741172576 or longer

 

[monkeywest]

Thanks guys seems like i have a couple of options there to solve the problem

Now all i have to do is make sure the people in the flats above don't have a dump whilst i'm working on it!!!!

Many thanks again.

Jon

 

[monkeywest]

Thanks Blargad