Jim et al:
I'm guessing that that tower failure was due to snapped HV lines on the
tower that unbalanced the forces on that tower and possibly others along the
power line's route (domino effect). See how the opposite legs (away from
camera position) are bent at top of concrete and how the HV lines drape down
onto the pulled-out foundations near the camera? That tells me that the tower
is leaning backwards (or forwards) along the route the line took and not
sideways.
Based on my somewhat limited exposure to HV line designs while an engineer
at the local power company (I had to design substation structures to dead-end
these HV lines), the tension PER WIRE could be as high as 20,000 pounds. Lots
of force to be resisted by those concrete piers.
73 de
Gene Smar AD3F
From: jimlux <jimlux@earthlink.net>
Date: 2008/09/03 Wed PM 07:54:47 EDT
To: W5LT <W5LT@verizon.net>
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] Foundation design
W5LT wrote:
> Here is the "Final Answer":
>
>
>
> See;
>
> http://www.geocities.com/ieee_tpc/ieee_tutorials/FundamentalPrincipalsFounda
> tionDesign.pdf
>
>
>
> Bob, W5LT
>
quite interesting... particularly slide 49
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|