Soil pipe cutting/routing

[Painters10]

I am fitting out a new bathroom in an extension. The soil pipe for the toilet has to run around a wall edge and then drop down into a socket in the floor space. Due to the next drop this runs at an angle in the ceiling space below. It's all been OKd with building control but I have a problem with drop heights. I have to have an access rod point and so I need to use a RA bend with access hole. But once this is inserted the horizontal pipe position is too high. Working to the minimum 18mm per metre that the building regs state for a 110mm pipe I need to drop my pipe by about 50mm

This is very hard to explain so I've uploaded a picture:

RA access bend goes into the floor point about 70mm and I think there is about 30mm of gentle bend that could go in. So is it OK to chop 50mm off the RA access bend so that once it's inserted it will drop my pipe height?

Thanks for reading.

Painters10

[dom]

Yes, chop your access bend about a bit if necessary.

Alternatively, if you're willing to go without that rodding point at that location, use 2 obtuse bends in place of the 90 degree and obtuse you have now.

2 obtuse bends will give quite a bit lower profile, and can be twisted about each other to give a lot of angular flexibility.

If there's an appropriate spot, you could then use a straight pipe section rodding point in the soil branch pipe.

[Nightjar]

Check first that there will still be enough straight to plug into the socket. It won't work well if, as I suspect, removing 50mm will put the seal on part of the bend.

Colin Bignell

[The Natural Philosopher]

just welly it full off silicone then.

[Fredxx]

Would this give you a tighter bend radius?

would also need a plug.

[Nightjar]

If you want to try that, check whether the BCO would accept it first.

Colin Bignell

[dom]

radius?

looked at that to solve a similar problem myself, and no, they're all the same size.

Even the floplast adjustable bend introduces a similar sized offset (it's also double socketed).

Only making the 90 degrees (or about that) up with a couple of obtuse bends worked.

[Painters10]

Thanks for the suggestions. BCO want a rodding point at that position and I can't change the access branch easily, so I think my only course is to chop the pipe and silicone it so that it's not just the rubber seal.

[JimK]

BCOs IMHO are very pragmatic and I would expect them to *assist* you with a solution rather than insist on a sceme that would not actually work out...unless you've wound him up? :>))

Give him a call and chat about it ?

Cheers JimK

[nafuk]

Can you rotate the socket in the floor space and then use a 45 or adjustable connector (not sure if these come with access points)? You may have to cut some of the flooring away to allow rotation.

[<me9]

I used similar, but without the access, but with an access plug in the top which in my case is easier ti use if necessary. Bottom of inlet comes in at about 100mm from floor, outlet is into spigot of a manifold which protrudes about 50 mm from the floor