[TowerTalk] Calculating Forces for Tilting tower

[Stan Stockton]

Dave,

Not that a big concrete base is needed if you are going to guy the tower, but if you are digging a big hole and pouring concrete I would put another 25 feet of 25G in concrete, bracketed to the building absolutely as high as possible, and use that as a gin pole to pull your tower up.  Would have a rope attached at the top of that going over the building to a tree or other sturdy attachment when you are raising or lowering it.  

At first thought of pulling the wall of the building down and how that might be prevented, it's probably time to think about how to go higher, forget about calculations which don't yet include two coaxes, rotator cable or two guy bracket assemblies, and do something you know will work. I don't think it is a good idea to even entertain the idea of pulling that tower up from the 10 foot level with attachment to a 2x4 wall.

73... Stan, K5GO

> On May 29, 2019, at 8:37 AM, Dave Tipton <dave at w5dmt.com> wrote:
> 
> 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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