[BC] Guy line part name

[Milton R. Holladay Jr.]

I quite clearly said that they were the *weak link* and failed under
*extreme stress*.
The tower would likely still be standing but for their failure. (It was not
a very big tornado.)  There were no other points of failure.
Yes, you're right: under normal stresses, there was no problem. Sometimes it
pays to read what you wrote before you hit send..........

They are a bad design and should never be used., as the tension is all
concentrated on the two pressure points where the crooked bolt contacts the
porcelain, whereas a preform distributes this force more or less evenly and
has little tendency to shatter the porcelain.
That was the opinion of the highly competent and experienced people who came
to erect the Stainless tower that replaced the fallen Utility. They said
they'd never use them.
M

----- Original Message ----- 
From: "Jerry Mathis" <thebeaver32 at gmail.com>

> 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
>