[TowerTalk] Legs of a 60' piece of tower being dragged while being lifted

[Roger (K8RI) on TT]

I believe you will find the problem, if there is one, is the lateral 
load on the two legs rather than the dragging unless it caught on something.
I would think the trolley option mentioned would offer no give and be 
harder on the legs than the dirt. 25 and 45G legs are quite fragile to 
lateral load on the unsupported legs.  55  IIRC is notably stronger.

A commercial operator should have no problem.

73

Roger (K8RI)


On 10/18/2016 Tuesday 8:03 AM, Steve Maki wrote:
> Ahh, I wasn't picturing short 20' pieces of tower with a ring close to 
> the bottom.
>
> Well in lieu of a roll-around foot-basket of some sort, one option 
> would a simple foot that bolted to the leg flanges, maybe a thick 
> piece of plywood or something that was sized to keep the lower ring 
> from touching the ground.
>
> Apologies if that solution was already mentioned, I didn't follow 
> every post.
>
> -Steve K8LX
>
> On 10/17/2016 23:22 PM, Grant Saviers wrote:
>
>> The tower base can't go on the ground, that was the problem for me with
>> some 20' sections with two rings.  Even with one ring, sometimes it is
>> at the low end of the section.
>>
>> Grant KZ1W
>>
>> On 10/17/2016 19:55 PM, Steve Maki wrote:
>>> Hmm. All I can say is we install much larger pieces of assembled tower
>>> than R55 (and 50' pieces of monopole weighing many thousands of pounds
>>> for that matter), and crane operators seem to have no problem picking
>>> the tower from the top end and standing it up straight without
>>> dragging it. It seems to be second nature with these guys.
>>>
>>> I can't quite visualize how rings complicate things that much if you
>>> have the base on the ground and the tower tipped up on a support 2/3
>>> or so up the tower.
>>>
>>> -Steve K8LX
>
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-- 

73

Roger (K8RI)


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