Replies

1. 
   caseyr | Oct 16, 2003 06:14am | #1

   I had thought that some yacht club would have figured a simple table giving lbs/sqft on the sail for a given wind speed, but I didn't find any such thing in a fairly fast Web search.  So, if you just want to play around with it and remember a bit of your advanced high school math, you might take a look at:

   http://www.acs-aec.org/disasters/building_codes/CUBiCwce.pdf

   http://www.vent-axia.com/sharing/windflow.asp

   http://www.signweb.com/installation/cont/windloads.html

   http://ind.ntou.edu.tw/~jmst/7-1/43-51(Vol-7-1).pdf

   Have fun...

1. 
   AXE | Oct 16, 2003 06:57am | #2

   Cool.  The vent-axia website was good.  20 mph wind = 1 psf.  Proportional to square of velocity.  Good rule of thumb.

1. 
   UncleDunc | Oct 16, 2003 07:01am | #3

   Probably should be a term in there for altitude and/or density.

2. 
   joeh | Oct 16, 2003 07:44am | #4

   So when I'm carrying a sheet of ply, how many of those square Pascals should I worry about? Are there more Pascals up on a roof?

   Joe H

2. 
   MarkCadioli | Oct 16, 2003 10:26am | #5

   there are many many variables involved with this such as terrain category, topographic category, wind direction and speed, openings in wall  . However as an indication, a low set gable wall surrounded by flat ground is subject to 22.56 psf during a 120 mph wind.

   regards

   mark

   quittintime