Comment on Broken stair step
callcc@lemmy.world 6 days agoI’ll give that a try. Why do you mean that they are meant to break? They have lasted for 60 years now, that’s not too bad.
Comment on Broken stair step
callcc@lemmy.world 6 days agoI’ll give that a try. Why do you mean that they are meant to break? They have lasted for 60 years now, that’s not too bad.
wetbeardhairs@lemmy.dbzer0.com 6 days ago
Those stairs have a bullnose that juts out and the whole thing is made from mortar. Mortar is very strong in compression but weak in tension. So a load on the tip of the stairs will put a large tension load on the top of that bullnose where it meets the stair corner. At some point it will break off.
callcc@lemmy.world 4 days ago
Makes sense.