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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Geotechnology; Highways; Materials; Ai It’s possible that many of the ‘old’ designs exist with a reduced factor of safety. The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
The standard includes requirements for seismic design and hopper bottom design. Bin design with ACI What I recall from using the Gaylord book is that they give several different equations and factors, and then say “You can use this one, but some people use 313-9 one and this third method seems to work okay too”. I can live with that. If there are any suggestions or if anyone knowns of a source of good information, please let me know.
More often than not, when I’ve designed hoppers or silos, I’ve had very limited information on the flow properties of the product, and was doing good to have a density, which tends to make one reluctant to calculate stresses to 8 decimal points. I think they difference is the horizontal pressure coeficients. Bin design with 31397 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.
Appendices provide values for over pressure and impact factors form stored materials. Download Now Defense manufacturing is all about project manufacturing and project accounting.
Bin design with ACI – Structural engineering other technical topics – Eng-Tips
The point to be learned is that there is not just a wide variation in the methods 331-97, but in the loads themselves. Thanks for the help.
Are you an Engineering professional? Concrete construction ; Design standards ; Earthquake resistant design ; Granular materials ; Reinforced concrete ; Reinforcing steel ; Silos ; Stresses ; Structural analysis ; Structural design Uncontrolled Terms: You can make more money that way.
Thanks for your comments. This document was replaced by Click Here to join Eng-Tips and talk with other members! A company I worked for years ago doesn’t even have an engineer on staff anymore. He uses the Gaylord’s infomation. While this recommended practice refers to “Building Code Requirements for 313-977 Concrete” ACI for many requirements, it puts forth special requirements and aco of considering the unique cases of static and dynamic loading from funnel flowmass flow, concentric flow and asymmetric flow in silos and the special loading on stacking tubes.
It looks to me at this point that I will be using a combination ack 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. Silos and stacking tubes are special structures, posing special problems not encountered in normal building design. Resources Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors.
International Concrete Abstracts Portal
As a consultant I feel I need to follow guidelines established by nationally recognized authorities even thought there are few. While I find the science interesting, where I end up is more important than how I get there. To me Gaylord and Gaylord is the latest information because that was when I first became aware of the overpressure coefficients, although they do present several different ways to do the calcs. Join your peers on the Internet’s largest technical engineering professional community.
Appears on pages s: I think I’m with you on this in terms of the K factor and overpressure of 1. Bin design with ACI Very true about the older designs. I get slighlty higher lateral pressures, but he uses slightly higher impact factors Gaylords factors. When I first saw the 77 spec I was not comfortable with increasing the designs by a factor of 2.
For hoppers both the Jenike and Walker equations are probably satisfactory. The structure got built, it didn’t fall down, but does anyone really know how safe it is? The interesting thing is that I work with a guy who has been designing water-tanks and silos for 30 years.
By joining you are opting avi to receive e-mail. ACI utilizes at rest pressures larger. Oct 1 It’s easy to join and it’s free. While this standard refers to Avi Code Requirements for Structural Concrete ACI for many requirements, it puts forth special requirements for the unique cases of static and dynamic loading from funnel flow, concentric flow, and asymmetric flow in silos, and special loadings on stacking tubes.
But that’s just a guess. Ac such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. Defense manufacturing is all about project manufacturing and project accounting.
Unwillingness to change what has worked forever. International Concrete Abstracts Portal. I haven’t made it through all of it yet but plan to do so to see if they have changed any of their procedures, or if there is anything else new.
This section specifies the overpressure factor to be a minimum of 1. The standard includes requirements for seismic design and hopper bottom design. Any help will be appreciated. Silos and stacking tubes are special structures, posing special problems not encountered in normal building design. Download Now White Paper: