StametsOct 20

Fucking math...

https://lemmy.dbzer0.com/post/55914172

Show threadidegenszavakOct 20

My engineering brain says it’s 3.25.

4% is ~ 5%. 10% of 75 if 7.5. To get the 5% I have to divide it by 2, so 4% of 75 is close to 3.25. I will have to multiply it with some safety coefficient at the end, so the exact value doesn’t matter.

Show threadSatansMaggotyCumFartOct 20

That’s why you can always double the maximum limits engineers give.

60 mph roadway?

I can do 120 on it no problem.

Eight person elevator? Sixteen.

0.08 BAC? 0.16 easy peasy.

Show threadidegenszavakOct 20

Yes, in elevators usually one cable could hold far more than the full weight, than they add 6 more for the safety.

For rail speed limits this is the exact way they calculate it. For road speed limits they consider break distance, which grows by the square of your speed, so if you go 120 on 60 road, you will need 4 times the distance to stop. I wrote 1.5 as a safety factor, not 4, With a 1.5 safety factor you can go by 75 though, but I would use a 1.1 safety there, as in my country the speed cameras are set up that way, you can go +10% of the official speed limit, they only send a cheque if you went even quicker than that.

Show threadatomicbocks
That’s because elevators use counter weights usually equal to the weight of the car and half the occupancy load so that it takes less energy to lift it and if it falls for any reason it won’t hit the bottom as long as the counter weights are still attached. The occupancy load is determined by the counter weighting system not the cable load capacity.
Oct 20 at 6:17pmWeb
Show threadBuddahrifficOct 20
Yeah, as I understand it, the elevator will refuse to move instead of collapse, and hopefully you’re not between floors when it happens because it was close and someone shifted their weight or bounced slightly or they might write a sitcom episode about what happens next (and the reality will be far more boring).