[TowerTalk] Mast install help

[Artek Manuals]

to further underscore Steves comment. the Rohn GP is rated for a 
"Vertical Lift" force. It is NOT rated for any sideways or bending 
moment force. Depending on the wind load even with a modest sideways 
moment with a very heavy mast the pole will fail !! I have the scar on 
my right hand to remind me of that as I noted  in my earlier post. If 
the tower is already erected ..GET A CRANE ...much safer..yeah it is 
expensive but the loss of even a finger is far more valuable  than the 
cost of a few hours of crane time

Dave

NR1DX

On 1/26/2022 11:17 AM, Steve Maki wrote:
> I hope everyone re-reads John's point here and takes it to heart - the 
> standard Rohn gin pole is rated for R25 & R45 sections - it's not even 
> rated for R55! The job being discussed calls for a stronger (and 
> ideally a longer) pole.
>
> -Steve K8LX
>
> On 1/24/2022 10:02 PM, john at kk9a.com wrote:
>> It is easier and safer with a bigger gin pole. If you're using a Rohn gin
>> pole a 2" x 22 ft mast is substantially heaver that it is designed to 
>> lift.
>> Remember that the minimum force on the pole is double the weight of the
>> object being lifted.
>>
>> John KK9A
>>
>>
>>
>> Greg N5IF wrote:
>>
>> I've a 22ft chromoly mast and am wondering if I will get this 
>> installed at
>> the moment (without a crane).
>>
>> Right now, I have 40ft of R55, and I thought I would raise the mast and
>> drop it into the yet to be completed tower (easier to do in my mind) vs
>> trying to stab it into the bearing when the tower is completed.
>>
>> How have others dealt with a 22ft mast, when you have a 12ft gin
>> pole.......what am I missing to get this done?
>>
>> Greg
>> N5IF
>>
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>>
>>
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-- 
Dave Manuals at ArtekManuals.com www.ArtekManuals.com


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