Soil stack connection

[Rat]

Hello,

I've read a few websites and have tried to figure out the waste regulations, but i'm still slightly fuzzy on the exact rules, so thought I would ask the experts.

I'm about to plumb in a new shower with the connection to the shower carrying on through to a utility room next door.

1) Is it okay for a 40mm connection into the stack to be lower than (but within 200mm of) a toilet outlet as long as the connection is at right angles to the larger connection.

2) Is it okay for 1 washing machine and shower to share a single 40mm pipe? Should I use a bigger pipe? Or should they have separate runs to the stack?

3) Is the coram coratech quadrant shower tray any good? I will be needing to lift the shower tray so that I can run the pipe under it and through the wall. This seemed to be a good option. Would you recommend any other shower tray instead?

Thank you very much,
Graeme

 

[seco services]

1) Is it okay for a 40mm connection into the stack to be lower than (but within 200mm of) a toilet outlet as long as the connection is at right angles to the larger connection.

can be directly opposite
but any lower 200mm if opposite.

 

[Rat]

Thank you seco,

The soil pipe is in the corner, I have a toilet coming in from one wall and I want to connect the shower boss as low as possible. My new connection will be at 90 degrees along the other wall. Are you saying I should be either inline, higher or more than 200mm lower? As I said I'm not opposite, but at 90 degrees.

If I'm not allowed to be a little lower, how can people make connections like ... http://www.marleyplumbinganddrainage.com/diyer/content/2/223/boss-connections.html

That sort of indicates 90 degree connections at any height are okay.

Thank you again.
Graeme

 

[seco services]

if your doing it at 90 degrees to the wc not a problem.
can be level or lower no limit.
if you was directly opersite not a problem but any lower would need at least 200mm gap.

if you notice all the connections at right angle not a problem
but the connection opposite the wc is only one connection and thats level.

http://www.marleyplumbinganddrainage.com/uploads/gfx/350.jpg

 

[Rat]

Brillant thank you seco, that's what I was hoping.

Now for an answer on 2 and 3 and I'm off to buy bits.

 

[seco services]

2, i always prefer to try keep showers seperate.
wouldn't fancy a w/m connected to a shower waste due to w/m powder clogging in the waste pipe.

3, can't answer on coram coratech quadrant shower tray