[TowerTalk] Help with fixing a leaning tower (NOT Pisa)

[Grant Saviers]

Correction - for the tower to tilt (at least the Tri-Ex and USTs I 
have), some spacer plates the thickness of the ears on the foundation 
are needed between the riser plates and the tower ears, since the 
foundation ears are outside the tower ears. Then the tower is right in 
line with the original foundation ears.

On 4/17/2011 1:06 PM, Grant Saviers wrote:
> You don't mention the ear orientations but if you tilted the tower up on
> installation one would think the matched pair of ears are away from the
> house and the single is towards the house.  I assume the tower can be
> tilted, otherwise a crane will be needed.
>
> You could make steel plates of appropriate thickness and length (5/8 x 4
> x 14"?) to bolt to the foundation ears and extend the bolt pattern the
> right length to the tower ears so the tower is plumb.  These would
> offset the tower the thickness of the plates, but that is so minor to
> not matter.  You'd gain about a half foot of height for more DX!
>
> You also might consider the prevailing wind conditions and the fact that
> wind is accelerated over the house, increasing the load.  After the
> tower is plumb is it practical to add some stabilization with a house
> bracket to the top of the bottom section?
>
> Grant  KZ1W
>
>
> On 4/17/2011 10:17 AM, Arthur Bernstein wrote:
>> Hello to all,
>>
>>
>>
>> I have a Hy Gain HG-52 SS 52 foot crankup. It's been up for a number of
>> years. The concrete base is as per specs. 42" on a side and about 5'6" deep
>> with about 6 more inches of concrete above the ground.
>>
>>
>>
>> The problem  is the tower is leaning due to the apparent settling of the
>> concrete base on one side. The base is near the rear of my house and is
>> leaning away from the house. For those not familiar with this tower and its
>> base, it uses 3 "dog ear" type mounts that are attached to a rebar cage
>> imbedded in the concrete. Each of the "ears" has two holes that are mated to
>> the similar dog ears on the bottom of the tower. The base is very similar to
>> the Tri Ex bases, such as for the W-51.
>>
>>
>>
>> A few years ago, a friend re plumbed the tower by redrilling some of the
>> holes in the dog ears and welding new nuts onto it, thus making the tower
>> vertical. It seems that the ground behind my home is not as stable as I had
>> thought, over 20 years ago (unfortunately.) We have run out of room on the
>> dog ears to redrill to plumb the tower.
>>
>>
>>
>> Any suggestions? My rear yard is not that large, so abandoning the base and
>> putting in a new one is really not an option.
>>
>>
>>
>> Any help would be appreciated. Thanks.
>>
>>
>>
>> 73,
>>
>>
>>
>>
>>
>> Art., N2KA
>>
>>
>>
>> n2ka at verizon.net
>>
>> _______________________________________________
>>
>>
>>
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