3 ms·
The ground pressure from a truck is around 150 PSI. A woman wearing high heels can match, and even exceed that. So the sidewalk would need to be just as strong
by ars 7y ago
The ground pressure from a truck is around 150 PSI. A woman wearing high heels can match, and even exceed that.
So the sidewalk would need to be just as strong as the road.
- egdod 7y agoThe woman in heels doesn’t ever slam on her brakes and skid.
- asdfasgasdgasdg 7y agoThat applies sheer stress to the road, but it doesn't really impact the compressive force or pressure applied, right?
- mensetmanusman 7y agoSurprised this is getting down voted, this is a common example in physics 101 describing the concept of point pressure. Architects have to consider the point pressure of heels when designing certain walkways.
- RadioHacker 7y agoI think it's getting downvoted because why does it have to be a _woman_ who's wearing the high heels?
- kbutler 7y agoCommon physics example, but it disregards how women actually walk and stand in heels. They walk on their forefoot, rather than balancing their weight on the heel. https://www.semanticscholar.org/paper/The-higher-the-heel-the-higher-the-in-ten-healthy-Speksnijder-Munckhof/9547d261aea7401caad230ecca180363ff13f0b4/figure/1 https://www.semanticscholar.org/paper/The-higher-the-heel-th... Shows less than 30 N/cm^2 (40 PSI) for women in heels - and higher heels result in lower heel pressure. Forefoot pressure is higher, despite the larger surface area.
- reitzensteinm 7y agoYeah, and a heel surface area of 32.3 +/- 4.4 cm^2. There are shoes with heel surface area of sub 1cm^2. I don't think the study invalidates parents claim, if anything it more it less supports it.
- mbrumlow 7y agoEven so. It would be a flaw to not consider that at some point in time a women may put full force on the heel. Thus the example is valid. Also I have seen high hees being abused by walking mostly on the heel.
- mirimir 7y agoIt's not that simple. Looking at the damaged roadway, I see lots of punctate damage. That puzzled me until I read your comment. I'm pretty sure that it's gravel under truck tires. So the same force-concentration dynamic as high heels.
- pjc50 7y agoNot only that, a common problem round here (UK) is that trucks park partially on the pavement. They routinely crack two-inch/50mm thick concrete paving slabs. I'd like to see a solar panel that can withstand that.