[TowerTalk] Calculating Forces for Tilting tower

[n8de at thepoint.net]

Are you telling me the tower only weighs 40 pounds?



Quoting Dave Tipton <dave at w5dmt.com>:

> If I understand what you are saying, roughly (40x4)+(4x50) = 360 lbs
>
> That is actually less than I anticipated.
>
> Your concern about the wall, is however a shared one.  Thinking an   
> internal guy running along a roof truss might be in order.
>
> Dave
>
> Sent from my iPhone
>
>> On May 29, 2019, at 8:55 AM, n8de at thepoint.net wrote:
>>
>> The tower will have its mass concentrated at the 20' level, and the  
>>  50 lbs 'at the top' will have its mass concentrated at the 40'+   
>> level.
>> if the 'hinge' is at ground level and your winch is at the 10'   
>> level, the total force of those two loads will be:
>> 2x the tower load PLUS
>> 4x the 'top' load.
>> that's quite a bit for the position of the winch .. AND .. if the   
>> winch is connected to the garage, it just might pull the garage   
>> wall down.
>> 73
>> Don
>> N8DE
>>
>> Quoting Dave Tipton <dave at w5dmt.com>:
>>
>>> I have a 40 foot Rohn 25, with a tilt base section.   It will be    
>>> sitting next to a detached framed (not block) garage with siding.
>>>
>>> I can attach a winch to an extra guy bracket I have at the ten foot level.
>>>
>>> There will be roughly 50 lbs at the top of the tower.  (Rotator,   
>>> Hex  Beam, GP3)
>>>
>>> How much is the maximum force required to raise this from a cable   
>>> at  the 10 foot level?
>>>
>>> Thanks,
>>> Dave, W5DMT
>>>
>>> Sent from my iPhone
>>> _______________________________________________
>>>
>>>
>>>
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>>
>>
>>
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