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RE: Tank wall coefficients

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I didn't see the cases Joe wanted in my copy of the Bureau of Reclamation
publication, but it does appear that Roark and Young's book has cases for
most boundary conditions with linearly increasing loads. 

William C. Sherman, PE 
(Bill Sherman) 
CDM, Denver, CO
Phone: 303-298-1311
Fax: 303-293-8236
email: shermanwc(--nospam--at)

> -----Original Message-----
> From: Michael L. Hemstad [] 
> Sent: Tuesday, July 06, 2004 9:33 AM
> To: seaint(--nospam--at)
> Subject: Tank wall coefficients
> Joe Grill wrote:
> "I have a copy of a document from PCA for rectangular concrete tanks.
> Does anyone have coefficient tables similar to those for a 
> rectangular plate with all four edges hinged and a fluid load 
> and a plate with the bottom and ends hinged with the top free 
> also for a fluid load?
> Thanks
> Joe Grill"
> Joe,
> The Bureau of Reclamation has a set of tables similar to the 
> PCA tables but much more extensive (90 pages, actually).  The 
> copy (of a copy of a
> copy) I have is at least 20 years old, but it may be worth 10 
> minutes looking at their website.  Upon checking, mine was 
> published by the US Gov't Printing Office in 1966, and the 
> Preface notes that "solutions of the simultaneous equatons 
> were performed using an electronic calculator..."
> Also, Salvadori's book "Structural Design in Architecture" 
> has tables for plates.
> Or, you could bite the bullet and try "Roark's Formulas for 
> Stress and Strain" by Warren Young.
> Finally, if none of that works for you, use tha PCA tables V 
> and VI with the transverse wall set very long.  It's close 
> enough.  If you think you're modelling real plate behavior 
> with any tabulated solution (especially for reinforced 
> concrete design), you should examine the underlying 
> assumptions more closely.  But, it's close enough.
> HTH,
> Mike Hemstad, P.E.
> St. Paul, Minnesota

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