overturning stability of rectangular tank with 4 legs
overturning stability of rectangular tank with 4 legs
(OP)
Hello every body,
Does anybody know how to investigate overturning stability of rectangular tank which is mounted on the ground with 4 legs?
BR.
Does anybody know how to investigate overturning stability of rectangular tank which is mounted on the ground with 4 legs?
BR.





RE: overturning stability of rectangular tank with 4 legs
I'll recommend that you contact a third year mechanical engineering student. Or second year... in many parts of the world they should be half way thru the second year and have a course called "Statics" under their belt.
RE: overturning stability of rectangular tank with 4 legs
It is not as simple as you think.
Refering to EN14015, Section 12, you can find some complicated formula for tank with circular cross section.
Check the attachment please
RE: overturning stability of rectangular tank with 4 legs
Based on your other posts, you appear to be attempting to do something with little experience, no in-house oversight, and a severe dependence on the internet for your consulting. For example, two months ago you asked essentially the same question in thread507-399609: Rectangular storage tank leg design. The work you are attempting to perform can put people in harm's way. It seems that you are operating outside of your area of competency, keep in mind that this is one of the requirements which goes with offering mechanical engineering services as a PE. If this is some sort of senior project effort, let us know, because that's about the only excuse.
RE: overturning stability of rectangular tank with 4 legs
At its most basic this is simple moment diagram.
you find your forces (wind is probably the worst), work out the force from your design wind load (force on a bluff body) then work out the weight and a few assumptions and hey presto - it works or it doesn't work.
Tanks on legs will be much more prone to overturning than tanks sitting on a base as the C of G is much higher.
You probably also need to assume that the legs won't buckle before overturning, but that could be a big assumption.
All in all this seems a simple exercise.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.