Ton Crane
February 7th, 2005
calculating psf in regaurdto crawler cranes?
i have a 100 ton american crawler crane. how do i calculate the psf, for this equipment.
Not sure what you are asking exactly…
Are you saying that you have a crane with a capacity of 100 tons and you want to know the pressure on the soil where the crane is positioned?
In this case, you take the capacity (in pounds) plus the weight of the crane (in pounds) then divide their sum by the area of the tracks on the crane (in square feet). This will result in pounds per square foot or psf as you wrote above.
These are example estimates, they may not be anywhere near the correct answer, this is simply how to do the calculation.
Assumed Capacity 100 ton = 200,000 lbs.
Assumed Weight 105 ton = 210,000 lbs.
Assumed Area of Track = 200 square feet
Note: 1 U.S. ton = 2,000 pounds = 2,000 lbs.
410,000 lbs / 200 square feet = 2,050 psf
There’s a start, now you just need to find out how much it actually weighs and how long and wide the tracks are to get the area of the track on the ground.
I hope that answers the question you were asking.
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