I'm taking a branch off just above an SVP manifold so there is a soil pipe now running in the horizontal plane. I'm wondering if it is permissible to then use a double branch connector (or similar) to allow me to feed in two toilets into this pipe (see attached image)?
If not, how do you normally connect two toilets at the same height into an internal SVP?
If not, how do you normally connect two toilets at the same height into an internal SVP?