|To:||James Brennan <firstname.lastname@example.org>|
|Subject:||Re: [TowerTalk] Rohn 25g ennginnering spec. 130 mph|
|From:||Bill Coleman <email@example.com>|
|Date:||Tue, 28 Dec 2004 09:31:07 -0500|
On Dec 8, 2004, at 2:12 PM, James Brennan wrote:
I am looking for some engineering specs forRohnn 25g tower. I need the base diagram and wind load ratings that are the most up to date. I need to show that it rates unloaded to 130mph with engineering specs and drawings to get a permit to put up this tower. I am only going 40 to 50 feet and bracketed to the house at 8'.
Rohn 25G can't do this. At 70 mph, a 40 foot tower bracketed at 8 feet can only hold itself up, much less support any antennas. At 130 mph, when the wind pressure is nearly four times greater, it would have all blown away.
I doubt even 55G could hold up in this service.
The base diagrams and wind load ratings are all available in the Rohn catalog.
Bill Coleman, AA4LR, PP-ASEL Mail: firstname.lastname@example.org Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
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