Need a book? Engineering books recommendations...

# RE: seismic design of storage tanks, UBC 97

• To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
• Subject: RE: seismic design of storage tanks, UBC 97
• From: "Sherman, William" <ShermanWC(--nospam--at)cdm.com>
• Date: Wed, 22 Jan 2003 09:52:18 -0500

```First of all, please note the following reference corrections per the
errata:

1. In section 1634.4, the reference to 1632 should be to 1634.

2. In section 1634.5-1., the reference to 1645.2 should be to 1630.2.

For a flat-bottom tank, equation (34-1) as given in 1634.3 may be used, as
permitted by 1634.4.

For an elevated tank, equations (30-4) thru (30-7) should be used with an
appropriate R-value (2.9 for bins and hoppers storing granular material);
and equation (34-2) should be applied as a minimum (not reduced by an
R-value).

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

> -----Original Message-----
> From: s s [mailto:steven1870(--nospam--at)yahoo.com]
> Sent: Tuesday, January 21, 2003 3:37 PM
> To: seaint(--nospam--at)seaint.org
> Subject: seismic design of storage tanks, UBC 97
>
>
> Which are the appropriate equations in UBC 97 for base
> shear in:
> 1) a bolted steel tank (flat bottom, anchored to
> foundation), and
> 2) a bolted steel tank (hopper bottom supported on
> braced legs), both storing granular material?
>
> 1) flat bottom tank on concrete - is this covered by
> section 1634.5 Other Nonbuilding Structures, with
> V=0.56CaIW (equ 34-2)?  If so, two more questions:  is
> equ 34-2 used instead of equ 30-4 thru equ 30-7 or in
> addition to them, and is it appropriate to reduce V by
> R=2.9 as mentioned in section 1634.1.2?
>
> 2) hopper bottom tank supported on braced legs - is
> this covered by section 1634.4, which refers back to
> section 1632, so that base shear would be Fp=4.0CaIpWp
> (equ 32-1)?  And again, is it appropriate to reduce by
> R=2.9?
>
> Any guidance or suggestions would be greatly
> appreciated, thanks
> Steven Stoppkotte

******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
*
*   This email was sent to you via Structural Engineers
*   Association of Southern California (SEAOSC) server. To
*   subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
*   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you
*   send to the list is public domain and may be re-posted