[BC] Guy line part name

[Jerry Mathis]

This type of clevis has been used since before I started working in this
business. I've seen very few broken guy wire insulators, and NONE that
caused a tower to fall. Not saying that it couldn't happen, but under normal
stresses and properly sized hardware, there should be no problem. A tornado
is NOT "normal stress", and a force strong enough to do what you describe is
enough to bring down almost any structure.
--
Jerry Mathis

On 10/27/09, Milton R. Holladay Jr. <miltron at mindspring.com> wrote:
>
> In my experience, this type clevis used in a porelain insulator is a weak
> link.
> A 440'Utility 40"face tower fell in a tornado due to the failure of some of
> these very items.
> Failure mode: extreme stress caused the U shape of the clevis to pull into
> a
> V shape, crushing the insulator out of it  and then having the bolt break
> off at the nut when the jerking of the guy  was stopped.
> I reccomend that you avoid them except in an extremely derated
> situation..........
> M
> ----- Original Message -----
> From: "Jerry Mathis" <thebeaver32 at gmail.com>
>
> > Would it be a clevis? Specifically, Joslyn J732. Go to this link for a
> > picture:
> >
> > http://www.macleanpower.com/products/item.asp?ITEM_ID=2114
> >
> > --
> > Jerry Mathis
> >
> > On 10/26/09, Mike McCarthy <towers at mre.com> wrote:
> > >
> > > Hey brain trust...
> > >
> > > I'm having a brain freeze on a specific guy line part. It resembles a
> > > shackle, but is really a bent omega loop of 1/2" bar with outward bent
> > > loops on each end.  The opening is closed by a 2nd 1/2" bent rod which
> has
> > > nuts on either end.
> > >
> > > This device is often used tying smaller diameter guy lines to a johnny
> > > ball and on utility guying systems.
> > >
> > > Anyone recall the name of this device and a vendor with stock?  I need
> 6.
> > > My usual suppliers don't have any and can't recall the "trade" name
> > > either. But they know to what I'm referring.
> > >
> > > Thanks...
> > >
> > > MM
> > >
> > >
> >
> > --
> > Jerry Mathis
> >
>
>

-- 
Jerry Mathis