[TowerTalk] FW: Tower collapses as its built.

[maflukey at gmail.com]

I agree with you Fernando - it would seem that something on the rigging to the tower section failed first causing the remaining rigging to unwind.   I watched it again on a larger screen this time and at 6 seconds, before the jib is deflecting towards failure, the tower section starts rotating in a clockwise rotation which can be seen by following the clocking of the antennas at the top.   I assume the remaining attached rigging must have caught on something, or possibly a secondary strap, caused the jib to fail.    Towards the end of the video remaining rigging can be seen swinging around in a circle.

Matt
KM5VI



-----Original Message-----
From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of Fernando Semiao
Sent: Sunday, December 1, 2024 6:26 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Tower collapses as its built.


Amen.. a choke on a strap broke, it happens all the time, not supposed to, but did happen. On work being done on a big commercial tower that most hams only dream of having ....Now we can take the conversation to the ham bands which need a lot activity and we can beat the horse to death there....the tower company, the workers, the crane company how everything  went wrong...then we will do complete report all based on a Youtube video to the insurance company and end of story.

On 12/1/2024 6:31 PM, RONDALL SPENCER wrote:
> Why so much wasted time on something that was done wrong Im sure they wish it never happen. This not the first tower failure thats ever happen and wont be the last.
>
> Ron
> Sent from my iPhone
>
>> On Dec 1, 2024, at 5:19 PM, Ken WA8JXM <wa8jxm at gmail.com> wrote:
>>
>> Which seems to me that the sections did not separate as expected and 
>> the crane tried to lift the entire tower, including the lower 
>> anchored and guyed sections, and failed.  Whether  they missed 
>> removing a bolt or the sections were jammed, either way, they did not 
>> separate until the crane failed.
>>
>> Ken WA8JXM
>>
>>> On Sun, Dec 1, 2024 at 4:12 PM <maflukey at gmail.com> wrote:
>>>
>>> If the video is advanced frame-by-frame at about 7 to 8 seconds the jib
>>> can be seen to deflect downwards continuously until failure occurs.   If
>>> the strap broke first, the jib reaction prior to failure would have 
>>> been upwards in the opposite direction due to the instant release of bending
>>> tension.   The full counter-reaction of the boom goes off screen at about 9
>>> seconds as the camera follows the fall of the tower section, but 
>>> reappears at 11 to 13 seconds when reverse curvature of the boom 
>>> from the counter-reaction is visible through the first boom oscillation.
>>>
>>> Matt
>>> KM5VI
>>>
>>> -----Original Message-----
>>> From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of 
>>> Fernando Semiao
>>> Sent: Sunday, December 1, 2024 4:55 AM
>>> To: towertalk at contesting.com
>>> Subject: Re: [TowerTalk] Tower collapses as its built.
>>>
>>>
>>> Sorry you are very wrong, was you there? It was the choke strap that 
>>> give away., don,t ask me how i know....Its very sad you ham's keep 
>>> inventing crap no wonder hams have a bad name. You and allot of hams 
>>> folks see shit on this video.... thats what you seen  Oh sorry 
>>> tomorrow its the hole crane fell sideways.
>>>
>>>
>>>> On 11/30/2024 3:34 PM, Jim W7RY wrote:
>>>> Heck with the strap....
>>>> n
>>>> The entire TOP JIB broke in two.
>>>>
>>>> Jim W7RY
>>>>
>>>>
>>>> On 11/30/2024 1:08 PM, Steve Jones wrote:
>>>>> Looks like the cable was not attached to the tower properly.  I 
>>>>> think I could see the strap around the upper section break.
>>>>> 73,
>>>>> Steve
>>>>>
>>>>>
>>>>>
>>>>> -----Original Message-----
>>>>> From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of 
>>>>> john at kk9a.com
>>>>> Sent: Thursday, November 28, 2024 9:25 PM
>>>>> To: towertalk at contesting.com
>>>>> Subject: [TowerTalk] Tower collapses as its built.
>>>>>
>>>>> The video short linked below from HamRadioClubLuzerneCoPA happened 
>>>>> to pop up on my computer today.  That installation became very 
>>>>> dangerous. I wonder if anyone knows the details?  Hopefully there 
>>>>> were no injuries.
>>>>>
>>>>> https://www.youtube.com/shorts/Gm-bq3ynSuU
>>>>>
>>>>> John KK9A
>>>>>
>>>>>
>>>
>>>
>>> _______________________________________________
>>>
>>>
>>>
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