> First of all, ANY tower that is installed by burying a section should be
> suspect UNLESS you are absolutely sure that the legs have plenty of
> drainage.
True as many even set in concrete may not have proper drainage.
>
> Drilling a small hole in the legs a few inches above ground can give you
> an
But ...ROHN doesn't even want the bolt holes, which will be too small,
reamed or drilled out as it'll break the galvanizing which leaves bare metal
exposed. They expect the installer to use a "taper pin punch" to open the
holes just enough for the bolt to slide in as a tight fit, but none of this
having to screw the bolt in.
> idea if there is standing water. If the water is clear then it is probably
> safe; if rusty then walk away.
>
> If its a dry hole at that level then snake some cotton string down the
> hole.
> If it comes back wet and rusty then Id also suggest not climbing.
>
It shouldn't normally come back wet. If it does the system doesn't have
adequate drainage.
> New tower construction should always use a base plate and pier pin if the
> only support is guy wires. If house bracketed then a minimum of 2 brackets
Not according to the ROHN catalog. You can use either the base plate or
they build, or did, bases for both the 25 and 45G that are designed to be
set in concrete which is what I used. The bottom ends of the tower legs
supposed to set in between 6 and 8 inches of pea gravel. The concrete is
poured over this while the tower base is inside the rebar cage. Yes they
show two brackets and I believe the maximum above the top bracket is only 15
feet, but I'd have to look that up.
Roger (K8RI)
> is required. The base should be a standard base plate but with one hole at
> each corner and secured to the concrete with 3/4" J bolts.
>
> An existing tower that was installed without drainage MAY have its life
> extended by drilling those small holes I mentioned. Then with ~ 3/16"
> tubing
> inserted down to the bottom regularly pump out any water. There are ways
> to
> derust the legs and seal against further rust but its an iffy proposition
> when you cant tell the extent of the damage.
>
> Carl
> KM1H
>
>
>
>
> ----- Original Message -----
> From: "Bill Winkis" <kc4pe@mindspring.com>
> To: "Blake M" <n4gi@tampabay.rr.com>; <towertalk@contesting.com>
> Sent: Wednesday, June 27, 2007 7:39 AM
> Subject: Re: [TowerTalk] Tower ACCIDENT
>
>
>> This information is all well and good ... it rings with a bell of
>> caution ... BUT , how do you know .. ????
>> In this case the climber felt all was well until the tower came down
>> with him on it .. but now how in the world do you test and determine
>> all is OK before you climb.?? Or what steps do you use to protect
>> your self ...
>> Certainly the professional tower people who partake in this forum
>> will have a degree of in site for us .. but it needs to be
>> discussed.!!! We've got guys here with 5-10-20 plus years old towers
>> ....What is the answer??
>>
>> -Bill
>>
>> At 10:05 PM 6/26/2007, Blake M wrote:
>>
>>>If I had a nickel for every time somebody has told me this line....!!
>>>
>>>In my experience, what this really means is:
>>>
>>>"This is a hack-job install, but I really need to make you believe it's
>>>OK
>>>or else you're going to bolt on me and I'm going to have to fork out
>>>major
>>>coin for a crane."
>>>
>>>Simple psych 101.... If you have a pretty girlfriend, you wouldn't have
>>>to
>>>walk around telling people how pretty she is, now, would you? ;-)
>>>
>>>Be safe....
>>>
>>>73,
>>>Blake N4GI
>>>
>>>
>>>
>>>-----Original Message-----
>>>From: towertalk-bounces@contesting.com
>>>[mailto:towertalk-bounces@contesting.com] On Behalf Of Richard J. Fiero
>>>II
>>>W5TFW
>>>
>>> The owner told me that he and his Brother Both men about 230 pounds
>>> each
>>>had been on the tower recently
>>>at the same time and that it was strong as an ox.
>>>
>>>
>>>_______________________________________________
>>>
>>>
>>>
>>>_______________________________________________
>>>TowerTalk mailing list
>>>TowerTalk@contesting.com
>>>http://lists.contesting.com/mailman/listinfo/towertalk
>>
>> _______________________________________________
>>
>>
>>
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>>
>
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>
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>
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