Alright, chickitout
Wiki page about fireIt's probably outdated, but I believe the thing I'm getting at is still true: It says a dwarf on fire will usually head for the barracks to rest and heal his injuries.
That's what I assumed and that's why I originally talked about a central crossing in the living area, which everybody has to pass. If bein on !!fire!! creates a high priority "omg I'm tired job" and makes every !!dwarf!! path home it's the way to go. IF (and that's a big if) 4/7 water extinguishes fire. I think an airlock system that showers automatically would slow down general pathing to much. Unless I build 20 of them next to each other, like a big toll station. But I guess it would be rather tricky to get down, actually, an airlock style shower in a major pathway, no matter how its built, sounds like a CPU cycle eating night terror to me. Also, I'm not sure whether constant short time drowning before going to bed makes dwarves sadish or not. I know I wouldnt like it.
Now here comes the "unless!". I feel kinda stupid for all those basic questions, but this is stuff I never bothered to check.
First of all I play with "zero rent" but I tend to leave the economy on. I assume a dwarf always will prefer to get his own room, rather than live in the barracks. Right? Now, a dwarf that is injured and has his own quarters ... will he rest in his own room or in the barracks? Because if I only use my barracks as a "hospital", the question where to put the airlock shower is easy. Or the pool. Airlock shower just in case the pool wouldnt work. And if injured dwarves go to their own rooms rather than to the barracks, the airlock shower is out again, anyway.
What's the deal with burning dwarves anyway? They will never try to intenionally put the flames on themselves out, even if they had a 3/7 - 7/7 pool with a stair to get out, right?