Girth hitching various substances: instant death?

Girth hitching various substances: instant death?

Post by Kyri » Thu, 19 Oct 2000 04:00:00


 I'm wondering if there's any particular reason not to girth hitch the
kind of accessory cord that hexes are slung on with sewn Spectra. It
was a case in which a biner clipped to the cord of the hex would be
loaded over an edge, and the best way I had to extend it was to girth
hitch a sewn sling (Trango ultratape, if it matters). Context is a TR
anchor in a horizontal crack. I can't think of any particular reason
not to do this (given that girth hitching weakens the slings somewhat,
but it seems like it would still be better than cross loading the
biners). Am I missing something? Does the fact that the accessory cord
and the sewn slings are different sizes/shapes make any difference?

--Kyri, the not-physics-major

--

What is the m***who rides may rede, when the night is thick and the
tracks are blind?
A friend in a pinch is a friend in need, but a fool who waits for the
laggard behind.
Down to Gehenna or up to the throne,
She travels the fastest who travels alone. --Kipling

Sent via Deja.com http://SportToday.org/
Before you buy.

 
 
 

Girth hitching various substances: instant death?

Post by <bbense+rec.climbing.Oct.18.. » Thu, 19 Oct 2000 04:00:00

-----BEGIN PGP SIGNED MESSAGE-----

Quote:

> I'm wondering if there's any particular reason not to girth hitch the
>kind of accessory cord that hexes are slung on with sewn Spectra. It
>was a case in which a biner clipped to the cord of the hex would be
>loaded over an edge, and the best way I had to extend it was to girth
>hitch a sewn sling (Trango ultratape, if it matters). Context is a TR
>anchor in a horizontal crack. I can't think of any particular reason
>not to do this (given that girth hitching weakens the slings somewhat,
>but it seems like it would still be better than cross loading the
>biners). Am I missing something?

- - No.

Quote:
> Does the fact that the accessory cord
>and the sewn slings are different sizes/shapes make any difference?

- - A little but not enough to matter, as long as the knot is snug
and there isn't the potential for sliding.

- - For a toprope anchor this wouldn't bother me at all. I'd prefer
it in almost all cases to loading a 'biner over an edge. Knots are
knots, they all weaken the material they're tied in. I don't
quite understand why the fact that girth hitched slings are weaker
is such a surpise to people. A girth hitch is just a square knot
with most of the bend in one rope, under force they almost always
turn into a square knot. If you look in the tables you'll find
that a square knot is one of the weaker knots due it it's sharp
bends.

- - I think it's good to know that girth-hitching creates a weaker
link, but that doesn't mean you should throw it out of your
tool box of techniques. Sometimes weaker is still good enough,
(and sometimes it isn't...)

- - Unfortunately, climerware is still off-line, but if you look at
the data you see that a girth-hitched sling is still much
stronger than the open gate strength of many 'biners. ( 14kn
vs. 9kn ).  I'd be much more worried about loading a biner over
an edge, biners aren't rated or tested for that kind of loading.
You have no idea of how much force it will withstand, at least
with the sling you have a good guess[1].

- - Booker C. Bense

[1]- Provided it's not a sharp edge.  

-----BEGIN PGP SIGNATURE-----
Version: 2.6.2

iQCVAwUBOe4awgD83u1ILnWNAQGVPwP/W5bWmmTZM9agZRB6xKqdwdJZfIXXV40h
zQzdMXAxphNPfnUdQi+GVoMcvXY5zs14dlh1VlCMlQQb3y4Y6AB8mohwF2w8fgOD
0P7PVmW6u0k0Fb4zaKOgUiQ+nlXeqGN+BxFla75NePeRRcvdKIChULY/cXA8h8vW
YzeBnq2xVuM=
=12YY
-----END PGP SIGNATURE-----

 
 
 

Girth hitching various substances: instant death?

Post by Chris Kantarjie » Thu, 19 Oct 2000 04:00:00

Quote:
> - - Unfortunately, climerware is still off-line, but if you look at

We're working on a resurrection. Have patience ... putzl works in
strange and wondrous ways, if at all.