This won't help you immediately, but in the near future the ACI website
should have the proposed ACI 350.3, "Standard Practice for the Seismic
Design of Liquid-Containing Concrete Structures" posted for public comment.
(Go to "aci-int.org", click on Committees, then Standardization Actions.) It
won't be "official" until comments are received and reviewed for potential
revisions. I have been told that the document is currently being formatted
to be posted on the website. This document will be based on the 1994 UBC
force levels and seismic methods - once published the committee will
immediately work on an update, probably based on IBC 2000.
The draft of the proposed ACI 350 "Code Requirements for Environmental
Engineering Concrete Structures" is also due to be posted for public
PCA is also preparing a publication to address seismic design of
liquid-containing structures, which will partly be based on ACI 350.3 but
will also discuss applicability of other codes. But this is just in draft
stages and won't be completed until 350.3 is finalized.
> -----Original Message-----
> From: Frank Griffin [mailto:fsg(--nospam--at)freese.com]
> Sent: Tuesday, January 30, 2001 6:59 PM
> To: 'seaint(--nospam--at)seaint.org'
> Subject: "Sloshing Effects"
> Can someone guide me to any reference materials pertaining to seismic
> effects of liquids in storage tanks? UBC '97 makes mention
> of, "inertial
> effects of the contained fluid." IBC 2000 (which is the code
> in effect for
> my project) makes mention of, "sloshing period of the stored
> liquid," and
> states that, "The tank shall be designed to resist the
> effects of sloshing."
> Furthermore, AWWA D100-96 states, "The design of ground-supported
> flat-bottom tanks recognizes the reduction in seismic load due to the
> sloshing of the contained liquid. This design procedure is
> referred to as
> the effective mass method." There are some references in the
> Appendix, but
> nothing more recent than 1984.
> Thanks in advance for any help you can provide.
> Frank Griffin
> Ft. Worth, Texas