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Re: [TowerTalk] 45G leg bolt help

To: towertalk@contesting.com
Subject: Re: [TowerTalk] 45G leg bolt help
From: jimlux <jimlux@earthlink.net>
Date: Sat, 9 Feb 2019 08:29:36 -0800
List-post: <mailto:towertalk@contesting.com>
On 2/9/19 4:54 AM, Jim Dawson wrote:
How do you even guy a 120' tower on a 1/4 acre lot? The guys must go stright up.

Not quite, but close..
100x100 ft is about 1/4 acre, so that puts the guys 70 ft out (assuming they were in the corners of the lot, and the tower was in the center).

That is, the guy anchors distance was 60% of the tower height, a guy angle of about 60 degrees. That's about the minimum distance recommended - Getting closer puts a pretty big load on the guy when you have any wind loads.


Jim - K9DD


----- Original Message ----- From: "Gary K9GS" <garyk9gs@wi.rr.com>
To: "Richard Solomon" <dickw1ksz@gmail.com>; "towertalk" <TowerTalk@contesting.com>
Sent: Friday, February 08, 2019 3:49 PM
Subject: Re: [TowerTalk] 45G leg bolt help


So what was the cause of the failure? I'm assuming water backed up and froze in the legs, splitting them? It wasn't due to the stove bolts failing, was it?






73,
Gary K9GS
-------- Original message --------From: Richard Solomon <dickw1ksz@gmail.com> Date: 2/8/19  3:04 PM  (GMT-06:00) To: towertalk <TowerTalk@contesting.com> Subject: Re: [TowerTalk] 45G leg bolt help
We had a local back in the Boston
area who put up 120' of Rohn 25.

He didn't know about Rohn putting
the bolts in the tower legs so he went
out and bought stove bolts.

The tower didn't make it through the
winter.

120' of Rohn 25 falling in a 1/4 acre lot
is not a pretty sight !!

73, Dick, W1KSZ

On Fri, Feb 8, 2019 at 12:54 PM Mac <libbysales@austin.rr.com> wrote:

Emm has a tower ever come apart because the leg bolts [all 6 ] broke
apart, just wondering ? mac/mc w5mc

On 2/8/2019 11:44 AM, Byron Tatum wrote:
> Hello-Â Â I preparation for installing 2 of 45G towers 130' each, a > while
back I bought the required quantity of leg bolt kits #45JBK from a Rohn
dealer sold as a Rohn product. These were supplied with bolts/nuts inside
plastic tubers with a cap at one end. I did not realize the nuts were
staked (3 stake indentations per nut). In fact, they are so heavily staked
that they are destroying the threads of the bolts plus really heating up
the bolts. I feel like the torque to thread nuts on is excessive and am
waiting for a bolt to twist off. Needless to say I will reject all of
these.  I have searched until I am blue in the face for a supplier of
grade 5 hot dipped galvanized bolts. Can anyone tell me where I can buy
these two sizes of grade 5 hot dipped galvanized bolts 5/16" x 2-3/8" long
and 7/16" x 2-1/2" long with nuts? I really do not want to buy any more
45JBK not knowing whether they are staked or not, plus the 5/16" nuts in my
kits were NOT hot dipped.Byron W5FH
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