4 ms·
Stability is a big issue for chairs especially. Rolling office chairs are afaict all 5 legged these days, unless you happen to find an old one. OSHA mandate.
by asteli 8y ago
Stability is a big issue for chairs especially. Rolling office chairs are afaict all 5 legged these days, unless you happen to find an old one. OSHA mandate.
- mikeash 8y agoI think that’s for failure tolerance. Five isn’t much more stable than four, but if a wheel falls off then five remains stable.
- gotocake 8y agoFrom experience, if you lose a caster the chair won’t balance on the remainder, it will thud down on the leg. What more legs does however is more evenly distribute the load, which is important when rolling around, leaning back and all, of the other things we do in office chairs.