This is where I started to read more into the code than was written. For my
own edification, why is there a likelihood of greater wind exposure over a
body of water for say a mile than in the middle of a desert for the same
distance. I suppose this is what I did not understand. In most case we use
Exposure C in areas where there are homes - even farm homes in surrounding
areas where I can see that we take into consideration trees, houses and
other structures that can block a gust of wind.
However, here in the low desert it is very likely to have one building and
nothing taller than a rock for a mile or more. Although I read the code for
what it said, I wondered if the interpretation was such that only a body of
water is considered unobstructed by anything that might act to reduce or
deflect the wind from a structure. If this is true, why would it not be true
in an open area such as might be found in the Dakota's, or the Panhandle and
deserts known as "Dust Bowls".
I hope you see my point - it's simply one of learning.
> -----Original Message-----
> From: Bill Polhemus [mailto:bill(--nospam--at)polhemus.cc]
> Sent: Tuesday, June 12, 2001 3:32 PM
> To: seaint(--nospam--at)seaint.org
> Subject: RE: What Exposure to use?
> Dennis, Exposure D is ONLY for locations directly
> adjacent--within a couple
> hundred yards or so--of an ocean shoreline.
> William L. Polhemus, Jr., P.E.
> Polhemus Engineering Company
> Katy, Texas
> Phone 281-492-2251
> Fax 281-492-8203
> > -----Original Message-----
> > From: Structuralist [mailto:dennis.wish(--nospam--at)gte.net]
> > Sent: Tuesday, June 12, 2001 4:54 PM
> > To: SEAINT Listservice
> > Subject: What Exposure to use?
> > There is quite a difference between Exposure C and D which has
> me worried.
> * 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
> * without your permission. Make sure you visit our web
> * site at: http://www.seaint.org
* This email was sent to you via Structural Engineers
* Association of Southern California (SEAOSC) server. To
* subscribe (no fee) or UnSubscribe, please go to:
* Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you
* send to the list is public domain and may be re-posted
* without your permission. Make sure you visit our web
* site at: http://www.seaint.org