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

 To: towertalk@contesting.com Re: [TowerTalk] Fwd: HDBX-48 figures for 90 mph zone K8RI Wed, 07 Dec 2011 00:19:21 -0500 mailto:towertalk@contesting.com>
 ```On 12/6/2011 11:13 PM, HansLG@aol.com wrote: > > In a message dated 12/6/2011 4:43:51 P.M. Eastern Standard Time, > w2lu@rochester.rr.com writes: > > As I recall wind pressure "on a flat surface" at 70 mph is 20.6 lbs/sq > ft., > 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 Regardless of wind area isn't there a boom length limitation on both the BX and HDBX series? 73 Roger (K8RI) > > > > > > 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 > > > _______________________________________________ > > > > _______________________________________________ > TowerTalk mailing list > TowerTalk@contesting.com > http://lists.contesting.com/mailman/listinfo/towertalk _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk ```
 Current Thread [TowerTalk] Fwd: HDBX-48 figures for 90 mph zone, HansLG Re: [TowerTalk] Fwd: HDBX-48 figures for 90 mph zone, K8RI <= Re: [TowerTalk] Fwd: HDBX-48 figures for 90 mph zone, Edwin Karl