On 05/07/2019 09:37, Jim GM4DHJ ... wrote:
"Harry Bloomfield" wrote in message
...
Jim GM4DHJ ... explained on 04/07/2019 :
why not? ... most people put it into a rainwater gully and complain when
it freezes up ... mine goes to a horizontal 100m run under the suspended
floor that only serves the utility room sink ....so no freezing up
problems...

That's an awfully big utility room..

that is the professional way to describe a run of pipe....a 100mm run of
pipe ...is that what you meant? It is quite long as well ....



You mean a run of 100mm pipe then.

And the connectors for those pipes have angles of 87.5 degrees for
a reason, it's to allow a lateral pipe to have the correct fall and
join a vertical stack without twisting the seal in the socket.