BINS HOOPERS CALCULATION

[cica58]

Hi. Anybody know a web page for information of bins and hoopers calculations, fundamentals, spreadsheet, technical articles? I'm new in these themes and need to calculate and design it. Its very important and urgent. Thanks.

ciralca

 

[arto]

Look in Troitsky's "Tubular Steel Structures" available from J.F.Lincoln Foundation:

https://ssl.lincolnelectric.com/foundation/

 

The classic reference is Milo Ketchum's "The design of walls, bins and grain elevators", old and out of print but should be in a university library or used book store. Check out his website

http://www.ketchum.org.

Your best bet (accessible) is "USEFUL INFORMATION FOR THE DESIGN OF STEEL BINS AND SILOS" published by AISI (American Iron and Steel Institute). Try this link:

http://odin.syscomsrv.com/aisishop/product.asp?pf_id=T-189&dept_id=59&top_dept_id=2005

 

[JStephen]

Unfortunately, the design of bins and hoppers tends to get complicated for a number or reasons, and you're unlikely to find nice concise definitive answers like you'd want. There are a number of books that have been published on the topic, with a couple listed above. I believe there was a bin and hopper book by Gaylord & Gaylord as well. Their "structural engineering handbook" also has a chapter on the topic.

In silo design, you get hoop tension due to the pressure of the contents, and shell compression from friction of the contents. One design shortcut is overlooked in the references, though. IF your bin is fairly small, you can design for pressure as tho it was a fluid, and design for compression as though all the product were supported on the shell. These assumptions are conservative; if they make your shell too thick, you need to look at it in more detail.

One problem you have in bin design is that you often don't know the exact properties of the product, and then there is also a wide variation in the available pressure equations to choose from. So when you come up with design loads, be aware that they could vary significantly.

In the structural design handbook, Gaylord and Gaylord give a method of designing a tank supported by legs. If you look at their analysis of the circular beam, you'll notice they never deal with the torsion in the beam.

 

[olmedo]

Use Janssen's equations.