connecting a three toilets in a row

[Markusbydark]

I'm currently converting a pub into a children's nursery. We are ground work for block paving out the back and need to sort out the soil pipes for a bank of three toilets. As it stands there is one toilet and I need to remove and plumb 3 junior toilets in series. Am I right in thinking its not going to be as simple as them sharing the existing single outlet? Cant seem to find the answer and it seems a bit ott having three ugly soil pipes coming out the back of the building.

Tia,

 

[keego]

No problem with sharing one soil pipe, I've seen up to 6 sharing one pipe before & they never had any problems.
In all honesty would you expect every toilet to flush at the same time as each other?

 

[picasso]

I would run a single pipe horizontally outside the building about a foot lower than the outlets from the toilets, then drop each outlet into the pipe, that way you get a good drop on the pipe and no danger of the toilets backing up on the each other.

 

[Newboy]

The standard for infants is a 300 mm pan height with a spigot centre of 140mm - the usual difficulty is getting fall on 4" waste behind the pans

Rim heights are (usually):

Infant 300 mm
Junior 350 mm
Adult 380 mm
DDA 480 mm