Comment on Broken stair step
callcc@lemmy.world 4 weeks 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 4 weeks 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 4 weeks 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 3 weeks ago
Makes sense.