[TowerTalk] Calculating Forces for Tilting tower

[Dave Tipton]

40 per section = 160x2 = 320
50 x. 4 = 200 
200 + 320 = 520



Sent from my iPhone

> On May 29, 2019, at 9:52 AM, n8de at thepoint.net wrote:
> 
> 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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