Gregg:
Try this reference:
http://wiki.contesting.com/index.php/Wind_load_calculations .
73 de
Gene Smar AD3F
----- Original Message -----
From: "Gregg Seidl" <k9kl@centurytel.net>
To: "Tower and HF antenna construction topics." <towertalk@contesting.com>
Sent: Sunday, May 02, 2010 10:29 AM
Subject: [TowerTalk] wind loading
> ND9Z and myself are trying to calculate what size tubing I need for my
> planned 4*6M-5XG array. What I'd like to know is this:how many pounds of
> force does the wind exert on each square foot of antenna load at 80MPH. Is
> there an online guide to that? Just trying to figure if a 4.5 inch with a
> .250 wall thickness is in the ballpark for 80 MPH. This would be the
> croosboom. I'm planning 2 inch by .187 wall for the vertical peices. This
> would be a 20 foot by 20 foot H frame. The antennas have a 2.7 sq ft
> rating
> each.
>
> Gregg K9KL
>
>
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