[TowerTalk] guy posts math

[Larry]

I've used I-beams for 100ft 45G and 75 ft 25G elevated guys. I needed to 
drive my tractor under the guys. An engineer is your best bet for the calcs. 
My I -beams are buried partly (about 4 feet) in concrete. Tabs were welded 
to the beams for the guy connections.

73,  Larry  W6NWS

-----Original Message----- 
From: Lee George AK4QA
Sent: Thursday, July 16, 2015 11:34 AM
To: towertalk at contesting.com
Subject: [TowerTalk] guy posts math

Does anyone have a the formula for guy posts?
I have a friend that wants tall guy posts (7 feet) for a 100 foot tower so 
he can walk under them.  I need to show him the stress that is involved in 
that as opposed to 2 feet out of the ground.
I've always used the wooden pole rule of thumb; for every foot up you need 3 
feet down.
Also, if you have the calculation for the back guy (i.e. earth screws) well 
my friends, that would be gravy on my biscuit!
All the best and
73,LeeAK4QA

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