Edge Settlement.
Edge Settlement.
(OP)
What is the correct formula to calculate the maximum allowable edge settlement. (Or what is the PRACTICAL formula to use)
These are a few a know (the most conservative first
API uses B=0,37R. But this is not realistic.
There is also a method used by AEC B=0.41R^2
EEMUA uses B=2R.
Table B10 and B11 is only used for lapwelded plates. So this isnot used for tanks with a annular ring. Is this correct?
And what does ASME say about settlement? I have not found anything about.
Bron Hekkema
These are a few a know (the most conservative first
API uses B=0,37R. But this is not realistic.
There is also a method used by AEC B=0.41R^2
EEMUA uses B=2R.
Table B10 and B11 is only used for lapwelded plates. So this isnot used for tanks with a annular ring. Is this correct?
And what does ASME say about settlement? I have not found anything about.
Bron Hekkema





RE: Edge Settlement.
Don't bother looking in ASME, stay in the tank Codes and Standards.
Steve Braune
Tank Industry Consultants
www.tankindustry.com
RE: Edge Settlement.
But should I ignore the formula B=0.37R. and only use the figure. As for I understand is this formula based on the
tank diameter and useless for edge settlement. (B=D/64).
And what is your experience with the API criteria.? Is it realistic?
In the Netherlands the soil is very soft. And the limit is allready reached with new tanks.
Bron Hekkema
RE: Edge Settlement.
Steve Braune
Tank Industry Consultants
www.tankindustry.com