[TowerTalk] Rohn 25G or 45G?

[K7LXC@aol.com]

In a message dated 98-07-04 01:03:37 EDT, w5robert@blkbox.com writes:

> On subject of 45G being more than 25G.
>  
>  ROHN BOOK:
>  80 FOOT TALL
>  25G   70MPH-15.7 SQ.FT.
>  45G   70MPH-15.3 SQ.FT.  
>  OR
>  100 FOOT TALL
>  25G   70MPH-15.0 SQ.FT.
>  45G   70MPH-14.2 SQ.FT.
>  
>  Interesting that at 70MPH ratings the 25G has higher SQ.FT. ratings.  Go to
>  90MPH & 45G is better as we expect.  But there's no question the 45G wider
>  leg spacing adds stability when you climb'um.  
>  
       Here's the reason for the windload figures. Per Note #4 in the General
Notes on the drawings, Rohn has deducted 8.0 sq.ft. of wind loading for a
commercial antenna mount. For ham purposes, add the 8.0 sq.ft. to the tower
capacity figure for TOTAL wind load. 

Cheers,  Steve   K7LXC

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