building for if its in seismic zone. Not to mention that flood barriers
(dams / levees) might break in the event of earthquake inducing additional
moment on the footing during the aftershocks when water have already
reached the building.
Naeem Ghani, P.E.
>--------------------------------------------------------------------------
>Your following message has been delivered to the list
> seaint@seaint.org at 11:28:54 on 27 Oct 2009.
>--------------------------------------------------------------------------
>
>
>* By raising the building 18" needs changed FFL and roof level. As
>recommended by Doug that will be easier route since you will be complying
>with the local code.
>* By designing the building to resist for flood requires designing the
> perimeter walls for hydrostatic pressure which is concenterated more at
> the
>bottom of the "triangular pyramid" (hydrostatic profile on the wall)
> exerting extra moment at the base of the shear walls. You'll have to
> design
>the footing for excess tensile loads. If flood exceeds 100 yr max. during
>service life than you are looking into re-eval of the footing and
>connections at the base....Further the building has to be analyzed
>completly for potential flood effects.
>
>Naeem Ghani, P.E.
>
>******
>
>On Oct 27 2009, David L. Fisher wrote:
>
>>Doug:
>>
>>
>>
>>If possible, raise the building.
>>
>>
>>
>>
>>
>>
>>
>>David L. Fisher SE PE
>>
>>Senior Principal
>>
>>
>>
>>Fisher and Partners
>>
>>372 West Ontario
>>
>>Suite 301
>>
>>Chicago 60654
>>
>>
>>
>>312.622.0409 (m)
>>
>>312.573.1701
>>
>>312.573.1726 (f)
>>
>>
>>
>>www.fpse.com
>>
>>
>>
>>
>>
>>-----Original Message-----
>>From: Doug Mayer [mailto:doug.mayer@taylorteter.com]
>>Sent: Tuesday, October 27, 2009 11:53 AM
>>To: seaint@seaint.org
>>Subject: Flood Loads
>>
>>
>>
>> Have a project where the arch forgot to get a flood hazard report and
>> found
>>out that we were, indeed, in a flood plain. This is all after the project
>>has been designed and submitted for DSA review, of course. It is a two
>>story wood-framed classroom building. The flood level is 12" above our
>>current finished floor so the arch is trying to figure out if it would be
>> easier to lift the building 18" or design the structure to resist the
>> flood
>>loads. According to the CBC, ASCE 24 is the standard to use for designing
>>to flood requirements, but I do not own the book. I was just wondering if
>>anyone has experience with flood loads and can possibly give me a feel for
>>what I am dealing with here.
>>
>>
>>
>>TIA,
>>
>>
>>
>>Doug Mayer, SE
>>
>>
>>
>>
>
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