Bearing Pressure for Ring Wall Foundation
Bearing Pressure for Ring Wall Foundation
(OP)
I am designing a ringwall for a steel tank. The tank is 110 ft in diameter and 45 ft high, filled with liquid asphalt. I am trying to determine my bearing pressure below to size the ringwall width. I am assuming that the weight of liquid resting directly on the ground goes into the ground and the weight of liquid directly above the ringwall goes into the ringwall. Is this a reasonable assumption? Based on my weight and moment due to wind (controlling moment) and a bearing capacity limit of 2500 psf, I need a ringwall that is 3'9" wide. For those of you who have a lot of experience with this type of design, does this width sound reasonable?





RE: Bearing Pressure for Ring Wall Foundation
http://www.slideruleera.net/foundations.html
On projects with soft soils sometimes we would size ringwall thickness for hoop stress and construct it on a footing of the appropriate width to meet allowable soil bearing pressure.
Cost of the above approach versus a thick ringwall, like you have proposed, are probably about equal.
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RE: Bearing Pressure for Ring Wall Foundation
RE: Bearing Pressure for Ring Wall Foundation
When the time comes to dig up these buried utilities a ring wall makes it possible to excavate immediately adjacent to the tank (often on short notice for piping or electrical failure) without concern that that the tank will be undermined.
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RE: Bearing Pressure for Ring Wall Foundation
RE: Bearing Pressure for Ring Wall Foundation
RE: Bearing Pressure for Ring Wall Foundation