Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

Re: Snow Drift Load

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Gary,

        I think that may be right.  Thanks, Gary.

Regards,

H. Daryl Richardson

Gary Hodgson & Associates wrote:

> I think the firm is RWDP or something like that (starts
> with an R) near the University of Guelph.  There is also
> another firm there doing the same stuff. Also there is
> the well-known wind lab at Unoversity of Western Ontario
> in London (2 hours west of toronto).
> Gary
>
> On 30 Jul 2004 at 14:11, Daryl Richardson wrote:
>
> > Mike,
> >
> >         Thanks for the complement.
> >
> >         My use of the term "major dissertation" was a feeble attempt
> >         at
> > humour due to my tendency to over verbalize.
> >
> >         I was actually present for part of the model study but it was
> >         in
> > 1975 or 1976. Even so I've probably forgotten most of the technically
> > important details.  Essentially, the testing went something like the
> > following.
> >
> > 1.    The scale was quite small, something in the order of 1" = 50',
> > give or take.
> >
> > 2.    The tests were conducted in a water flume which was about three
> > feet wide and, perhaps 12' long. The water was about 8" deep and the
> > flow rate was about one or two feet per second.
> >
> > 3.    Sand was used in place of snow.  I don't remember the size; but
> > it was fairly find.  I expect it would all pass a #100 screen.
> >
> > 4.    The model had to be reassembled for each different height of
> > building above ground level.  Each model was tested for wind direction
> > from at least 8 compass points.
> >
> > 5.    I don't remember how long the tests took; but it was a few
> > hours, not a few minutes (Perhaps 4  hours).
> >
> >         Of course, as we all know, the scale, flow rate, viscosity,
> >         sand
> > density etc. etc. all have to have properly matched ratios
> > model/prototype.  In all, I found the whole thing very interesting
> > (Mr. Spock might even say "fascinating!").
> >
> >         The testing was done in a private testing lab owned by a
> > consulting firm.  As I recall, there were four "partners or
> > principals" and several or all were engineering professors at "Guelph
> > University" (if I've got that name right), which is located a few
> > miles (50 or so) west of Toronto, Ontario, Canada.
> >
> >         As far as cost is concerned I didn't have anything to do with
> > the cost; I have no idea what it actually did cost.  That said, we can
> > all make a reasonable guess.  Say 300 to 400 hours for engineer and/or
> > technicians plus a month rent of the equipment plus a report.  Even
> > considering that university types under value their own services it
> > would not likely cost less than $50,000.00 if done today.
> >
> > Regards, Mike,
> >
> > H. Daryl Richardson
> >
> > "Michael L. Hemstad" wrote:
> >
> > > "......I hope this major dissertation is of some help to you.
> > >
> > > Regards,
> > >
> > > H. Daryl Richardson"
> > >
> > > Well, Daryl, I thought it was pretty cool.  Thanks.
> > >
> > > How does one go about conducting a model study like that?  Are there
> > > Universities who do it, and roughly what does it cost?
> > >
> > > Mike Hemstad, P.E.
> > > TKDA
> > > St. Paul, Minnesota
> > >
> > > ******* ****** ******* ******** ******* ******* ******* ***
> > > *   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
> > > *   without your permission. Make sure you visit our web
> > > *   site at: http://www.seaint.org
> > > ******* ****** ****** ****** ******* ****** ****** ********
> >
> >
> >
> > ******* ****** ******* ******** ******* ******* ******* ***
> > *   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
> > *   without your permission. Make sure you visit our web
> > *   site at: http://www.seaint.org
> > ******* ****** ****** ****** ******* ****** ****** ********
>
> ******* ****** ******* ******** ******* ******* ******* ***
> *   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
> *   without your permission. Make sure you visit our web
> *   site at: http://www.seaint.org
> ******* ****** ****** ****** ******* ****** ****** ********



******* ****** ******* ******** ******* ******* ******* ***
*   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 
*   without your permission. Make sure you visit our web 
*   site at: http://www.seaint.org 
******* ****** ****** ****** ******* ****** ****** ********