Two toilets on same pipe run

[daunker]

I've read the building regs guidance about y junctions under buildings but I think this is where two horizontal runs connect and then not able to rod both. I am converting a building so wanted both bathrooms on the same run as only have to cut the slab once and go under cast founds.

 

Is this ok? I've searched here fairly extensively and think it is. Should I have used a Y and then 45 bend rather than a T triple socket equal junction (it's the right way round) for the second bathroom? Thanks!

 

There's an IC about a metre outside the building. I've Building Control coming on Friday would like everything to be right as I plan to fill with pea to crown as Friday afternoon is wet weather coming. Thanks!

Edited July 12, 2023 by daunker

[Dave Jones]

use a rest bend at the head of the run and a swept T (not a normal T) for the second one. 

[daunker]

Thanks! Happy days that's what I have- thank you!! I mean it was a swept tee when I said it's fitted the right way around. Outfoxed by terminology will remember that thank you! The first bathroom with the rest bend is the main ensuite one so probably primary anyway. Would have needed a longer pipe length if it was a y-junction required!

Edited July 12, 2023 by daunker

[Mr Punter]

You should have a y and a 45, so the flow is in the right direction.

[daunker]

1 hour ago, Mr Punter said:

You should have a y and a 45, so the flow is in the right direction.

Thanks this is what I'm thinking. Will pick one up tomorrow, and some new pipe 🤦‍♂️

[Temp]

Is the fall ok? Looks a bit flat in the photo?