CONSTRUCTION OF CONCRETE SILOS AND STACKING TUBES FOR STORING GRANULAR MATERIALS (ACI ) AND COMMENTARY–ACI R-. ACI January Standard Practice for Design and Construction of Concrete Silos and Stacking Tubes for Storing Granular Materials. Does anyone have experience with ACI and designing steel bins? I am specifically concerned with calculating loads on bins and the.
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Appears on pages s: I get the impression when reading the Gaylord text that the value of K is sometimes used as a fudge factor to skew results towards where the researchers want to end up anyways. For those so inclined the Jenike and Johanson site at www.
Concrete; Filing Info Accession Number: A company I worked for years ago doesn’t even have an engineer on staff anymore. It’s easy to join and it’s free. His arguement is that he is confortable with his designs based on his experience and therefore sees no reason axi utilize a seemingly more conservative approach. Based on test results shown in Gaylord the ACI equations are as good as any and it is an actual written specification.
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Bin design with ACI – Structural engineering other technical topics – Eng-Tips
Close this window and log in. Download Now Defense manufacturing is all about project manufacturing and project accounting. I haven’t made it through all of it yet but plan to do so ack see if they have changed any of their procedures, or if there is anything else new.
Gaylord, and I believe the old ACI calculated the lateral pressures based on active pressures with the charted overpressure coeficients. Very true about the older designs. Appendices; Figures; References; Tables; Pagination: Bin design with ACI It looks to me at this point that I will be using a combination of methods depending on if it’s a shallow bunker or deep bin, filling or emptying, funnel-flow or mass-flow, or a vertical wall or hopper.
Buzek as the author. It seems to me that many bins have been sucessfully designed in the past just using filling pressures per the Janssen equation, but on the other hand, published literature does clearly indicate that pressures during emptying are greater.
It looks to me at this point that I will be using a combination of methods depending on if it’s a shallow bunker or deep bin, filling or emptying, funnel-flow or mass-flow, or a vertical wall or hopper.
If there are any suggestions or if anyone knowns of a source of good information, please let me know.
ACI utilizes at rest pressures larger. The structure got built, it didn’t fall down, but does anyone really know how safe it is? This ACI 31-397 practice gives material, design, and construction requirements for concrete silos, stave silos, and stacking tubes for storing granular materials, It includes design and construction recommendations for cast-in-place or precast and conventionally reinforced or post-tensioned silos.
Students Click Here Join Us! He uses the Gaylord’s infomation. This document was replaced by Prior to that the people I knew were using equations published by Ketchum about a hundred years ago based on Janssen’s work.
You can make more money that way. Does anyone ai experience with ACI and designing steel bins? Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors.
Thanks for the help. I think they difference is the horizontal pressure coeficients. My designs are always either comparable or slightly conservative to him.
Are you an Engineering professional? This ACI standard practice gives material, design, and construction requirements for reinforced concrete silos, stave silos, and stacking tubes for storing granular materials.
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Any help will be appreciated. When I first saw the 77 spec I was not comfortable with increasing the designs by a factor of 2. It’s possible that many of the ‘old’ designs exist with a reduced factor of safety.
The standard includes requirements for seismic design and hopper bottom design. ACI Committee Publication: This should be good enough for me at least for cement, sand, and gravel where I am now working.
The Eng-Tips staff will check this out and take appropriate action. For hoppers both the Jenike and Walker equations are probably satisfactory. While this recommended practice refers to “Building Code Requirements for Reinforced Concrete” ACI for many requirements, it puts forth special requirements and ways of considering the unique cases of static and dynamic loading from funnel flowmass flow, concentric flow and asymmetric 3113-97 in silos and the special loading on stacking tubes.