Nickfromwales

You robbed me of gold, and now he wants the silver too I doubt any mere mortal would ever get the flush pipe to soil pipe centres spot on enough to offer the pan on without issues.

Tres bien Rodney ??

Bugger. I meant to edit that out of his post so I won ☹️ ??

D'oh ? You'll be buying them ANYWAY. Take me now, Lord.

In an arrangement like the one you show in the Marley design, yes you can use equal branches, but I wouldn't in your situation as you have the opportunity to do a better and IMO more reliable install. Ive done as above in offices and nightclubs etc where there are 4 / 5 / 6 or more WC's in a row, tight together and no room to use y branches. The nightclub ones often blocked with any 'excess material' sent down so the rodding eyes we fitted got used a LOT. ( I know this because I DJ'd there and my ex boss did the install ). When you clearly have the opportunity to go Y branch......Y wouldn't you ??

So, another Geberit frame went in today. Looked to see how you can go rear horizontal exit with the gubbings supplied. @JIH Ok. So in the picture the black bits are : Left one is the pan connector which comes supplied too long and you cut it to length. That is inserted into the bent connector ( item on the right ) when you fit this as God intended. Middle is the 90x110mm reducer. Right is the bent bit ( pan connector receiver ) that gets clipped into the frame to make it a captive fitment. So, for this exercise we take the pan connector and affix the rubber seal. Then fit the reducer straight onto the pan connector as shown. That will take you out the back and push fit into a regular 110mm soil fitting. Bingo. No need to buy anything else as you have rear access to both the cisterns and can offer these on once the frames are in an the pans are on. With no rear access you'd need the captive element so the pipes don't push away from the pan when you offer it against the pan connector and flush pipe, but here you can just make the soil up in the service void and clip it all together nice and tight. If the pan ever has to come off and be refitted, then the pipework will be held by the fact the soil is all clipped / mechanically fixed appropriately.

@richi Why do you need the pump overrun ( POR )? Any residual heat will just go via the gravity hot pipes. POR is only required where lifting demand / call for heat closes any water path from the heat exchanger.

Result. Top bits of kit. ?

If I've read correctly then your thinking about the shower and bath going into one 40mm connection ? That's not a good idea ( if so ). Shower on its own 40 and bath on its own 40, and then tee the basin into the bath. Then put an anti syphon trap onto the basin to allow some air admittance for the when the full bath is emptying. Shower doesn't need one. I do go OTT with the wastes under the boards TBH, but I haven't lost a patient yet. The difference is I'm installing for customers so I always go belt n 2 braces as my ethos is "why buy a 40mm pipe when I can spend a tiny bit more on 50mm ". . If the ? is heading in the right direction then it'll be staying nowhere after the first few bends / junctions I ass-sure you.

https://m.ebay.co.uk/itm/DeWalt-DE088K-Laser-Level-ASH48112/263347619400?hash=item3d50bdc648:g:aEwAAOSwTO9aHDIM and https://m.ebay.co.uk/itm/BOSCH-PCL-20-SELF-LEVELLING-CROSS-LINE-LASER-LEVEL/162692585830?epid=1072996711&hash=item25e13bd966:g:FMUAAOSw-3pZz~R9 The dewalt ones take a real beating and just keep going. For £50-£70 I'd buy a used one or you'll get a cheap nasty laser.

So what we're all saying is that we're not going to go back to discussing solar farms then ?!? ??

That's lunch cancelled.

Spot on. Can you run 50mm waste for the shower? Makes a big difference to the discharge rates if running horizontal for any length over a metre.

Internet grab

It's the real world which means two tiny cold bridges on an otherwise thermally efficient existing dwelling = infinitely better . Sometimes you've got to accept a little compromise. Calculate the additinal energy loss from those two insignificant bridges, and then work out the cost of re-doing all the good work so far and you'll have your answer. Just simply not worth it imo. Is the elevation in question at the side / rear ?

@Triassic What's your budget? I may know of a nearly new Bosch GLL-3-80 P for sale, which is the one I have. It's the mutts nuts and it'll sell for good money afterwards.

I think it's down to lifestyle. If you like to entertain then they're great for extending the formal and informal parts (dining room and patio) together to form one larger function space. Probably good to have the option of opening up to the elements, but also more importantly not to forget that you can simply open the first unit, much like a regular single width door, for fast / easy access in or out, without having to slide the whole thing or open any other mechanisms.

Back to solar farms it is !?

Just extend them for now and EWI the walls. Then cut them back so they can be clipped onto the EWI and move on with the bathroom.

@daiking Agree in part but would you be so tentative to their situation if after 2 years they said "sorry, it's not for us" ? Some security wouldn't be asking the world, and I'm not blaming them for the situation, just right now it's seems win-win for them and fingers crossed for Dave. .

Dave. I'd snap my right arm off to be able to build my own home, so chin up mate. The glass is always half full so be glad your not employed by someone for one ( with the sword of Damocles swinging over your head ) and not unsure if your job and income was safe. If you have to have the turkey in the 'van then embrace it and enjoy it, the build isn't going anywhere. Just go on and listen to the horror stories of self builders shafted for all their money and left with nothing, life savings in tatters and non-mortgageable home etc, and youll soon realise your position is actually quite enviable. Your build is on a ratchet, it can only move up a notch every time you do a bit more, and you've saved a ? load of money already by being a tradesman, so by your own admission are further ahead than you thought you'd be which is a huge positive . If you have to drip feed it then at least it's still getting fed, so stay positive and keep your spirits up. It's the wrong time of the year to be gloomy ? What assurances do you have of the tenants buying after the 2 year period ? If it's zero and based on a handshake then put the house back on the market as if they don't buy you'll be kicking yourself. Being nice is one thing, but if their serious when they see the for sale sign in the garden they'll make good on the promise and chuck some money on the table as a deposit. Get them a contract that says it's non-returnable and tell them to piss or get off the pot. £10k sounds like an achievable amount and if their as serious as they suggest won't cause any problems. There's too much riding on faith otherwise Chin up

Another option with corner branch and no boxing in.

This option utilises the parts that came supplied, but only work if the sides are boxed in. Option with a corner branch.

The two WC's can't tee together as the image shows, as the left hand WC cannot discharge into an equal branch. You'll need a Y-branch and a 45o bend so the flushing water is directed towards the stack without stalling. The corner branch dave linked is the proper fitting to use here TBH, so each WC connects to the stack independently. Using 45o bends or even 90o bends is perfectly acceptable. Are the WCs boxed in in each room ? Eg can you use the factory bend to exit sideways on the left WC using the factory connector and then a bend turning left so then facing direct into the stack? Then you could also do the same on the right hand WC and connect into a y branch just after where the left WC enters the storage space.

Time for change, as you can only blame the management. What a shambles of an office we have running the country. Selflessness and integrity are not any of the 'qualities' residing behind the doors of no.10. My biggest worry is how much worse it'll get. .