Roger (K8RI) wrote:
> k2vi wrote:
>
>> Would there be a way to construct a 40' wood tower, The base being
>> 10'x10'square and the top at 5'x5' square. Probably 4x4 posts bolted
>> together. A ladder made to climb up to the top. Sort of like a WW2 lookout
>> tower. All pressure treated. I would love this because I can then bolt a 5'
>> roof tower on top and maintain the antenna, feedline and rotor whenever I
>> want with no help. As I get older i would still be able to maintain the
>> antenna and not have to rely on others. Has anyone had if inducted this
>> idea. Would be interested to know.
>>
>>
> Building a 40' wood tower is a relatively simple design that allows for
> a lot of variation.
> Now days there are some problems such as finding *GOOD* pressure treated
> lumber. I've been using pressure treated 10 and 16' 4 X 4s for other
> applications and they've not stood up well. That speaks more for the
> quality of the specific wood and not 4 X 4s in general. I couldn't find
> any 20' 4 X 4s. You'd probably have to go to a regular lumber yard
> rather than any of the big box stores, tell them what you want, that it
> will have to remain structurally sound for humans on top for at least a
> couple of decades.
>
> Good quality 4 X 4's are heavy. By using through bolts and a 3 to 5'
> overlap they are strong. Another method of reinforcement of the
> joints/overlap is with 1.4" steel straps/yokes I haven't priced any
>
Ahhh... That was supposed to be 1/4" strap, not 1.4". Now that would be
a hefty reinforcement by itself. <:-))
73
Roger (K8RI)
> recently but I'd guess a 40' self supporting wood tower of the required
> strength and quality might be a bit more pricey than a 40' 25G, but one
> whale of a lot easier to climb with a ladder built in.
>
> I'd also use 4 X 4s for the horizontal cross braces, but probably
> pressure treated 2 X 6s for the diagonal braces.
>
> Then don't depend on just the pressure treatment. Give it a good coat
> of antifungal primer followed by at least one if not two coats of finish
> paint.
>
> 73
>
> Roger (K8RI)
>
>> tony k2vi
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