In New York City, we typically put a 36" (or approx 1000mm) landing every 10 steps.

isn't it @ 12' vertically in IBC?

i think @ 5000mm (16', roughly) it would be good to have a landing @ halfway point @ 2500mm (8')

if it's for public use both mid-landing and main landing will have to be 1200 mm or more deep.

that is, if the stair turns 180 deg, which i now upon reading the post again realize it might not. but anyway, for when you make one that does.

what is a mm?

it's something people used to use back when they still felt the need to relate measuring to abstract quantities rather than to their bodies. it's approximately 5/127 of an inch.

depends on size, but in japan a landing is required for vertical rise of 4 meters though the number changes depending on project size/type. a landing at 2500 sounds reasonable. can't recall for sure, but shouldn't it say explicitly in part K code?

You're in school! You don't need no stinkin landings!

of course you do.

i hear zaha hadid was very big on landings when she was at the AA. Which was a good thing cuz when she got work 25 years later she was like totally prepared.

Here's the answer:

In the uk you can have up 15 steps (16 in Wales) of straight flight stairs without a landing on the condition that the stair is less that 1000mm wide and riser/treads of 184/250mm. Anything more than any of those categories requires a landing