[TowerTalk] Luso Tower/wind load rating

[Larry]

I forget the exact numbers but wind pressure is something like 20 psi at 50 
mph, 30 psi at 86 mph, and 40 psi
at 100 mph. There are many other factors obviously that will affect the 
load.

73, Larry  W6NWS
----- Original Message ----- 
From: "Art Trampler" <atrampler at att.net>
To: <towertalk at contesting.com>
Sent: Sunday, November 15, 2009 2:56 AM
Subject: [TowerTalk] Luso Tower/wind load rating


> OK, am I missing something here?  If I am understanding how Luso states 
> the wind load ratings on its “smaller” towers, they are rated at
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> 53.8 sq.ft.　(Maximum wind speed: 25 m/seconds at full extension) 53.8 
> square feet at only 56.25 MPH wind.
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> 25 * 3.3 (approximate feet in a meter) * 3600 / 5280 = 56.25 MPH.
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> So, in rough terms, rating at 80 mph is about 40% greater wind speed, so 
> the rating at 80 mph would be about 20 square feet (.6 * .6 * 53.8)?
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> That seems awfully low…what am I missing?
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> Art Trampler, KØRO
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