Impact of Ringwall size on center to edge differential settlements - API 650 Tanks
Impact of Ringwall size on center to edge differential settlements - API 650 Tanks
(OP)
thread256-327302: Ring wall and Tank Center Differential Settlement
I am designing a 144' by 60' API 650 tank on firm to stiff clay soils.
I read that it's common practice to size the ringwall width such that the bearing pressure is same as that under the tank base - to minimize differential settlements. I wonder how much impact does width of ringwall have on differential settlement between tank center and edge?
Behaving as a flexible footing and following elastic theory, the settlement at tank center and edge will be different (center almost twice edge) even if the bearing pressure under ringwall is made same as that of the tank base.
Need clarity on this issue. Thanks
- KapoA
I am designing a 144' by 60' API 650 tank on firm to stiff clay soils.
I read that it's common practice to size the ringwall width such that the bearing pressure is same as that under the tank base - to minimize differential settlements. I wonder how much impact does width of ringwall have on differential settlement between tank center and edge?
Behaving as a flexible footing and following elastic theory, the settlement at tank center and edge will be different (center almost twice edge) even if the bearing pressure under ringwall is made same as that of the tank base.
Need clarity on this issue. Thanks
- KapoA





RE: Impact of Ringwall size on center to edge differential settlements - API 650 Tanks
If you haven't already, you should read "Oil Storage Tank Foundations" by Boberg. Here's a link: http://www.slideruleera.net/TankFoundations.pdf
Jenny
RE: Impact of Ringwall size on center to edge differential settlements - API 650 Tanks
Geotech recommendation says ringwall foundation and have given settlements. What I was really trying to know is how much impact does width of ringwall have on differential settlement between tank center and edge?
KapoA
RE: Impact of Ringwall size on center to edge differential settlements - API 650 Tanks