[TowerTalk] When is a 100' tower only 97' tall?

[Dan Schaaf]

My bathroom scale says I am 215 lbs and my doctor's scale says I am 219 lbs.
What shall I do. Neither scale tells me what I want to see.



Best Regards
Dan Schaaf
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K3ZXL www.k3zxl.com
60 Meters www.60metersonline.net
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-----Original Message----- 
From: John Hudson
Sent: Wednesday, August 08, 2012 1:07 PM
To: 'John Becker' ; towertalk at contesting.com
Subject: Re: [TowerTalk] When is a 100' tower only 97' tall?

You think that's bad.. got to your lumber yard and measure a 2x4 or a 2x6.,
then see what you are paying for!

John
KO4XJ


-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of John Becker
Sent: Wednesday, August 08, 2012 10:25 AM
To: towertalk at contesting.com
Subject: [TowerTalk] When is a 100' tower only 97' tall?

I was looking at the engineering drawing for Rohn 25G yesterday, and was
surprised to see that the total length of a section is 10' 0". This
*includes* the 3.5" that is inserted into the next section. The
effective height of a 10' section is only 9' 8.5". While not significant
for one section, it quickly adds up on a tall tower.

I wondered if this was possibly an error on the drawing, so I went out
to my tower and took a measurement. Sure enough, the distance from the
bottom of the first section to the bottom of the second section is 9' 8.5".

And here I've been thinking for years that my Rohn 25G-FK-68 tower was
really 68' tall, when it's actually only 66' 3". I would call this a
"truth in advertising" problem!

73, John, K9MM



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