Allowable Bearing Capacity
Allowable Bearing Capacity
(OP)
This might be simple to many, but I have some difficulties. I will build an area (which will be backfilled with soil material) which will house the cranes I have. I have a maximum component load of 125 metric tons of 4-wheel cranes. The crane has a wheel with an area of about 1 square meter each when it sets/touches the ground. Question: What should be the allowable bearing capacity of the ground (soil) to hold all my cranes?





RE: Allowable Bearing Capacity
If you have some allowable tilt angle under those circumstances, then you provide the geotech some information as to how much that compacted fill can settle. Thus, the allowable bearing capacity that someone may say you need, will depend on the allowable settlement under load.
Do you have adjustment potential for taking up such settlement at each support? Is this just a temporary job thing or a permanent support situation? What tire pressure do you require, since that may be the required bearing capacity of the ground below, as a rough answer.
RE: Allowable Bearing Capacity
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Allowable Bearing Capacity
The area will just be a place where I can park the heavy equipment. It may also be a place where we can fix and maintain the equipment (some sort of a workshop). So the plan is to fill the area with earth fill and compact it, no more concrete.
There is no occasion where all the load will apply to only 1 tire. We are assuming that the weight of the crane which is 125MT will be divided equally to 4 (number of tires), so each tire will carry 31.25 metric tons.
I believe this will be a permanent support situation. I will be using this for about 1.5 to 2 decades.
Is it safe to assume, having said 31.25MT per square meter (area of 1 tire), I will have about 306kPa of allowable bearing capacity?
RE: Allowable Bearing Capacity
RE: Allowable Bearing Capacity