[TowerTalk] Deviation from plumb

[Bob Shohet, KQ2M]

I can think of several reasons that a tower gets out of plumb:

1) Settling of ground around the tower base – especially when it is an asymmetric combination of ledge and dirt  - just look at what happens
to the doorjambs inside of houses – where the cracks appear.  Also foundation cracks seen in the concrete on the basement walls and basement floors.

2) Minor earthquakes – Richter 1 – 2 range – the kind that you don’t even feel or notice – we get those here in Connecticut

3) Hurricanes, tornados and damaging wind events – thankfully infrequent but can certainly stretch the guys unequally (especially if you have substantially different length guys like I do), physically twist the tower, etc.

4) Large Ice storms with heavy ice which puts tremendous additional weight on the tower and guys – even worse if there are strong winds pushing on the heavily ice-encased tower and guys.

I have to realign the tower every so often by adjusting the guys to straighten the tower and then resetting the tension on each guy. Each tower and every guy wire should be rechecked at least annually and preferably after a very severe storm.

Bob  KQ2M



From: Mac 
Sent: Monday, July 08, 2019 12:32 PM
To: towertalk at contesting.com 
Subject: Re: [TowerTalk] Deviation from plumb

not much, if any..

it would drive me nuts if were not "plumb"  no reason for it really ..

but it sounds like ur circumstances mite have one..

best:  mac/mc  w5mc

On 7/8/2019 10:34 AM, Larry Horlick wrote:
> What is the maximum deviation from plumb for a freestanding tower?
>
> Larry
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