Ok I’ll bite. @MedicalConsensus You seem to be getting excited about design. And you like the medical stuff.
So you’ve decided your cheap chemical plastic loo painted in bright colours isn’t the way to go.
You are now onto the universal toilet. And you’re going to kit it out with all sorts of AI alarms and suck up the maintainance costs. It’s still private and now it has to be in a room off a main circulation space ideally. This may require an expensive fire door on each unit. Fire doors have to stay shut. A good way of knowing whether a toilet is occupied is for the door to rest in the open position.
Physically space wise, it’s going to be difficult to change from single sex to universal without losing lots of units but we’ll ignore that. It’s still private. How do you do the ventilation? Often there’s no natural ventilation through windows or door gaps off a main corridor so you’re going to need mechanical ventilation for building control regs and safety. But you said you didn’t like the false ceiling tiles that typically house ventilation pipes?
There’s some cool experiments you can do with lasers that show where faecal plumes go when you flush. Experiments have shown they will disperse around the room to around 1.5m which covers the sink and dryer area in a universal toilet. Now you are faced with a quandary in public health terms. Do you wash your hands and dry them (microbes breed in air dryers in needs filters changing etc to stop you ending up with more microbes on your hands than when you started)? Or don’t you bother to wash and dry your hands in the area that’s been covered by faecal plumes of the previous occupants? There’s been experiments in hospitals with timed sensors on toilets and sinks to show how little men wash their hands compared to women so toilet door handles are definitely a point of concern so that disease doesn’t spread from when you touch the door handle when exiting the unisex toilet.
In fact, it has been shown that unisex (universal) designs are so much worse for hygiene in hospitals that academics have said that they are not a good idea. Does that extend to schools and other services too?
Obviously having more staff cleaning the universal rooms would be expensive but useful to keep on top of this. However. There’s a problem. Your doors and walls don’t have a gap. This gap is really useful when using a mop, bleaching floors (and walls) and letting it drain for a really good clean to kill pathogens. You can’t do that without leaving everything damp and detritus building up against the edges. One of the big problems is that doors get jammed at the bottom as they get damaged - sometimes by expanding through cleaning liquid they have touched from the floor if someone has had to mop out vomit or faeces. That too means that unit is out of order. A way to get round this is to have a gap at the bottom of the door as it prolongs the useful life with less maintenance costs.
In short, it’s much healthier to be washing your hands outside the area of the toilets. And to use paper towels rather than warm air dryers. All scientifically proven. It’s also cheaper. And safer.
Here’s a science bit:
https://salus.global/article-show/pathogen-findings-raise-concerns-about-move-to-unisex-hospital-facilities
The reason I came back is now you are on to universal toilets (and mentioned schools) you may be interested to know that The Good Law Project (also with no health and safety experience) thought it was a ‘sophisticated’ solution for schools in a consultation document for Keeping Children Safe in Education.
When I was a secondary school teacher, I was allowed 1 pritt stick per class. For the year. Where is the money coming from for these less hygienic and less safe designs?