Not covered on the site: The fact that San Francisco experiences earthquakes. Unlike all those other cities it sources as being perfectly fine with completely different building standards.
As the other comment mentions, Japan is listed as not having a maximum, making this more or less lose relevance.
On top of that, the stated motivation for the two stairwell rule is fire safety, which is only really adjacent to earthquake safety. Other locations have figured out that two stairwells are very much not necessary to achieve appropriate levels of fire safety, and San Francisco would do very well to learn from them.
Not covered on the site: The fact that San Francisco experiences earthquakes. Unlike all those other cities it sources as being perfectly fine with completely different building standards.
True it didn’t, but Japan got earthquakes like they’re going out of style.
Yeah but that’s just because of all the sumo wrestling matches going on.
As the other comment mentions, Japan is listed as not having a maximum, making this more or less lose relevance.
On top of that, the stated motivation for the two stairwell rule is fire safety, which is only really adjacent to earthquake safety. Other locations have figured out that two stairwells are very much not necessary to achieve appropriate levels of fire safety, and San Francisco would do very well to learn from them.