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Hi everyone, I'm looking to install new ceiling (first floor) joists to my bungalow to be up to to the job to have a room in the loft to give us some more space. In the future we will be looking to add dormers and create a few bedrooms however funds don't currently allow. I've looked at span...

Lined up like so - but now I am considering your routing.might be better. Not sure why I didn't consider it before.

A new venture maybe! But i'll have to learn tricks like emoticons in pipework first.... The stink pipe is currently outside the back of the house which we will be extending so it would have to be moved again in the not too distant future but that route is possibly a possible one. I've...

As shown here (love drawing on mac)... inspection chamber down the bottom, current vent stack is off the other run into it. Toilet> branch with AAV ontop > 92.5 bend > ~5m straight run at 1:40 > branch to connect to clay existing down pipe towards chamber.

Thanks guys. So assuming I can move the toilet above the main straight run with a 90 bend up to the toilet and an AAV which also provides access... Would a single T or 90 with access to make a drop shaft into the clay be passable?

Hugh, i'll have a look whether not using a 45 in the horizontal section is possible. Making a new system around the outside of the house is a lot more work as it would be in the concrete driveway. Why would laying the Y down and using a 90 be good? Just better flow? I'll only need that Y branch...

Maybe an access 90 degree bend would be my best bet in the living space on the PVC>Clay connector?

This is all a bit disappointing! How are the bends below pretty much all toilets acceptable then? Are the toilets 'removable appliances' giving direct access to the 90 below them? The two 45's at the clay end of the system are a necessity without big work to go under the house/make a new...

I was going to put access either at the toilet vertical stack bit (through the dashed AAV port in the pic) or further along outside the building (far left of the drawing). The AAV port would have to go around two 45's to get to the 45 under the bathroom (a 45 then through the Y branch) and...

Thanks for the reply. The 45 closest to the toilet would be a horizontal (with correct fall). The other 2 are to change the vertical clay pipe to a new horizontal run, rather than having a 90 bend (which would be easier!). Would the Y branch be permitted? Just considering what if any other...

I'm installing a new soil pipe from a new bathroom to connect to where the original pipe is under the old bathroom. The intention is for this to carry waste from the toilet, basin, shower and bath. I will need to ask building control to come out and inspect but don't want them to be wasting...

Hi all. I'm moving my bathroom and have installed a new soil pipe to connect to the old clay one at the other side of the house. This means it has the horizontal from the inspection chamber, verticle for 800mm, new horizontal to new bathroom and then toilet off that. Do toilets have to...

Crudely phone drawn...

The toilet is going to sit in the bottom right of this picture... The current toilet is behind the wall top left. I pulled some of the floor in the bathroom and the current toilet has an unvented clay soil pipe straight out the bottom of it, 900mm, then a ~90° turn to the invert which takes it...

I've spoken to building control and they say to go ahead with the work but don't cover up the new soil system so it can be inspected. So at this point I suppose I need the plumbing section to ascertain what routing/order I'm allowed by regs and what works practically? Is the wc allowed to...

It's more a case of getting plans together beforehand at the moment.

Ah yes sorry. The floor plan shown is pre-extension. I stuck the red around where the new bathroom would be.

Thanks for the reply. The house is a bungalow. There is a slope to the site which means there's sufficient space under the floor to get a good fall on the soil pipe. The blue ring is meant to show the soil vent stack, outside the 'left' of the house. Red ring is the toilet in the (new)...

Hi everyone. Apologies if this isn't the perfect section and it should be in plumbing, I realise it has both regs/plumbing queries. I'm a new home owner looking to move my bathroom from one side of the house to the other. The current soil system has the vent pipe outside the rear of the house...