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[TowerTalk] Fwd: HDBX-48 figures for 90 mph zone

Subject: [TowerTalk] Fwd: HDBX-48 figures for 90 mph zone
Date: Tue, 6 Dec 2011 23:13:02 -0500 (EST)
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In a message dated 12/6/2011 4:43:51 P.M. Eastern Standard Time, writes:

As I  recall wind pressure "on a flat surface" at 70 mph is 20.6 lbs/sq 
so  if the  tower is rated for
18 sq ft at 70 mph, would it be too much of  a stretch to say to the zoning 
board that since wind pressure at 90 mph is  34 lbs/sq ft, by simple math, 
the tower should be good for 10.9 sq ft at  90 mph ?
Gene / W2LU

Nop! It is not that easy. You have to take the wind surface of the  tower 
into the calculation as well which makes it "a little more  complicated".
Hans - N2JFS

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