I had a free-standing Rohn 25G - 3 section 10' tower, bottom section buried
3.5 feet in dirt/dry concrete (not mixed) for a Height above ground
(AGL) of 26.5'
Had a Hazer tram with a 12' 2" (.25 wall) aluminum mast, total mast
height was 34.5'
Triband beam (Mosley TA-33) at 32' AGL, The house with the roof peak
at 24' to the
west sheltered the tower (25' away) from wind SW thru NW (usually the
worst winds in the Minnesota
area, tower was up over 5+ years, never a problem.
Just for reference......
van
wd8aam
At 00:43 5/15/2010, you wrote:
>
>In a message dated 5/4/2010 12:01:09 P.M. Pacific Daylight Time,
>towertalk-request@contesting.com writes:
>
> > Curious to know if Rohn 45 was bracketed to my brick house no higher
>than 9 feet above ground, how high could the tower go with a small
>windload, unguyed? Small = TH2 + 3el 6M + rotator.
>
> Well, it depends. What's your county windspeed rating? If you don't
>know, you can find it at
>_http://www.championradio.com/county.windspeed.data.html_
>(http://www.championradio.com/county.windspeed.data.html) . It's the
>minimum - your local building department may have deemed it higher.
>
>A free-standing 45G can go to around 35' with your load @ 80 MPH. Rohn
>specs allow you to be about 15 feet above the housebracket but the stated
>loads are bigger so they don't provide a direct answer.
>
>Cheers,
>Steve K7LXC
>TOWER TECH
>
>
>
>
>
>
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