2000 lbs per sq ft is the lowest limit I found for allowable load. My foot is about 0.22 sq ft, meaning that 440 lbs is the safe allowable load for construction.
For reference, a car tire is ~35 psi which is 5000 lb/sq ft. That puts a 1100lb creature on 1 foot leaving a similar dent to a car tire.
I think your “for reference” might be incorrect. The psi of the tyre is the air pressure inside, pushing against the inside walls of the tyre; the relevant numbers here would be weight of the car, divided by the sum of surface area of all tyres on the ground. Tyre pressure shouldn’t factor into that at all. edit: I mean it does, because the flatter the tyre the more surface area is in contact with the ground, but if we’re talking about that more maths is required.
Right, there’s that “more maths” I was talking about; I knew this would be a convolution and I really didn’t feel like figuring it out so early in the morning, so I appreciate the source haha.
The paper doesn’t really contradict me (I did note that inflation pressure changes surface area contact), but that 10-20% is a really good rule of thumb for figuring it out on the fly 🙌
2000 lbs per sq ft is the lowest limit I found for allowable load. My foot is about 0.22 sq ft, meaning that 440 lbs is the safe allowable load for construction.
For reference, a car tire is ~35 psi which is 5000 lb/sq ft. That puts a 1100lb creature on 1 foot leaving a similar dent to a car tire.
I think your “for reference” might be incorrect. The psi of the tyre is the air pressure inside, pushing against the inside walls of the tyre; the relevant numbers here would be weight of the car, divided by the sum of surface area of all tyres on the ground. Tyre pressure shouldn’t factor into that at all. edit: I mean it does, because the flatter the tyre the more surface area is in contact with the ground, but if we’re talking about that more maths is required.
https://static.tti.tamu.edu/tti.tamu.edu/documents/0-4361-1.pdf
Page 47, it’s typically 10-20% higher than inflation pressure.
I forgot that the fantasy world was full of pedantics
Right, there’s that “more maths” I was talking about; I knew this would be a convolution and I really didn’t feel like figuring it out so early in the morning, so I appreciate the source haha.
The paper doesn’t really contradict me (I did note that inflation pressure changes surface area contact), but that 10-20% is a really good rule of thumb for figuring it out on the fly 🙌