Andrew Wrote in message:
On 18/08/2020 14:39, Mike Halmarack wrote:
On Tue, 18 Aug 2020 13:53:58 +0100, Roger Mills
wrote:


Can you post a photo showing what it looks like?

https://i.postimg.cc/LssWL0T3/rising-main.jpg


If the whole vertical run of this pipe is not mechanically
supported then the compression joints will be constantly
trying to pull themelves apart, which is not good.



This is three floors?
How do compression joints "pull themselves apart" exactly?
--
Jimk


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