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Re: [TowerTalk] Rohn 25G Spec Question

To: "RICHARD SOLOMON" <>, "TowerTalk" <>
Subject: Re: [TowerTalk] Rohn 25G Spec Question
From: "Steve Katz" <>
Date: Thu, 18 Jun 2009 14:43:57 -0700
List-post: <">>
This is in Rohn document #A871266R1 dated 9-24-87.  Not sure if it's ever been 
updated after that.

30' of 25G, NO ICE, 70 mph wind, is rated 6.4 square feet.  With 1/2" ice at 70 
mph, 2.5 square feet.

At 80 mph, NO ICE, 3.7 s.f.  At 80 mph, 1/2" ice, 0.0 s.f.

At 90 mph, NO ICE, 1.7 s.f.  At 90 mph, 1/2" ice, 0.0 s.f.

"Designs assume transmission lines symmetrically placed as follows: #25 tower, 
ONE 5/8" line on each face (total = 3)."

"Allowable antenna areas assume round antenna members." (This means round 
tubing used for all members, not square tubing.)


-----Original Message-----
Sent: Thursday, June 18, 2009 2:40 PM
To: TowerTalk
Subject: [TowerTalk] Rohn 25G Spec Question

I couldn't find my answer in the Rohn Catalog, but then I may have missed it.


What is the acceptable wind load for 30 feet of Rohn 25, UNGUYED.


Thanks, Dick, W1KSZ

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