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@contesting.com> On Behalf Of Fernando Semiao
Sent: Sunday, December 1, 2024 6:26 PM
To: towertalk@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@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@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@contesting.com> On Behalf Of
>>> Fernando Semiao
>>> Sent: Sunday, December 1, 2024 4:55 AM
>>> To: towertalk@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@contesting.com> On Behalf Of
>>>>> john@kk9a.com
>>>>> Sent: Thursday, November 28, 2024 9:25 PM
>>>>> To: towertalk@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
>>>>>
>>>>>
>>>
>>>
>>> _______________________________________________
>>>
>>>
>>>
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>>
>> _______________________________________________
>>
>>
>>
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>
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