[freeandfreezing]

The problem of insufficient bathrooms is rarely an issue in real estate other than facilities intended for performances, or sporting events, or other places with large crowds. It is a design problem of dealing with high peak demands, like those at a football game, and isn't really an issue for the millions of other buildings.

Trying to change the building code to solve a very uncommon problem doesn't make much sense. A better approach would be to focus on the places where the problem occurs, and design those facilities to reduce the problem.

That said, if you have enough of a crowd you end up with a line. Anybody who has tried to get out of the area around Gillette Stadium after a game knows that.

[MortMan]

And the male to female mix varies significantly from event to event, adding yet another variable.