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Reload this Page Minera Lead Mine / Cabin shaft - N/Wales- 21/8/10
Underground Sewers, Culverts, Caves, Mines & Air raid shelters etc.

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Default 23-08-2010, 13:24

That looks good, hard work, but good.
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Default 24-08-2010, 19:45

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Originally Posted by Reddood View Post

we rigged up and donned our harnesses and down we went.









The shaft is vertical, about 60ft, and pretty easy to ab down..

Am sorry but WTF is that rigging about?????

Some one is in SERIOUS need to learn how to play on ropes!!!!!


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Default 24-08-2010, 20:21

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Am sorry but WTF is that rigging about?????

Some one is in SERIOUS need to learn how to play on ropes!!!!!
Can you please tell us all what is wrong with it? Instead of going OMG we're all going to die.
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Default 24-08-2010, 20:29

What is wrong with it?

I'm a rope noob, but it looks like the nearer rope is holding a deviation for the far rope. Assuming the ropes are secured at either end so they won't slip up/down the tree it looks like they are secured to, why is it bad?

Like I said, I'm a noob, I just want to learn, and it worries me that I can't see anything wrong with this picture.


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Default 25-08-2010, 00:28

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Originally Posted by Earth Worm Jim View Post
Can you please tell us all what is wrong with it? Instead of going OMG we're all going to die.
If you have to ask that then thats even worse!!!

Think of the fall factors involved. You have 2 ropes stretched out straight and loaded mid way. Think when you load that rope it is going to stretch and go no where near a natural hanging point so all the load is transfered direct to the ancor points. The load on the rope and ancors is unbelivable. If a rope snaps you have one hell of a swing which then gives a massive fall factor on to the next ancor point which will enevitably snap. If you are going to hang over the middle of a shaft rig a Y hang. Even if the y is very long to reach ancor points it is still the strongest way and if an ancor gives you only have a very small swing and stops shock loading the next ancor point.

Please read Life on a line and you will understand exactly what is wrong with your rigging. Your not only endangering your own life but anyone else who dangles off it.

If you dont know where to get life on a line just PM me your email address and i will email it over to you.


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Default 25-08-2010, 00:32

That makes sense. I assume a Double Fig 8 would work for that?


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Default 25-08-2010, 00:53

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Originally Posted by Edus1 View Post
If you have to ask that then thats even worse!!!

Think of the fall factors involved. You have 2 ropes stretched out straight and loaded mid way. Think when you load that rope it is going to stretch and go no where near a natural hanging point so all the load is transfered direct to the ancor points. The load on the rope and ancors is unbelivable. If a rope snaps you have one hell of a swing which then gives a massive fall factor on to the next ancor point which will enevitably snap. If you are going to hang over the middle of a shaft rig a Y hang. Even if the y is very long to reach ancor points it is still the strongest way and if an ancor gives you only have a very small swing and stops shock loading the next ancor point.

Please read Life on a line and you will understand exactly what is wrong with your rigging. Your not only endangering your own life but anyone else who dangles off it.

If you dont know where to get life on a line just PM me your email address and i will email it over to you.
That's acutaly a very good point Ed!
Yes the loads are a lot higher when you rig the ropes like it was but given the options there was nothing else that could have been done. The actual fall factor was significantly less than 1 if you could see the whole rig and I did have a think about it before I went down the rope. FYI there was four separate and independent anchor points.

I was a little surprised when I came to undo all the knots, in that none of them seamed to have had a significant loads on them. They where all quite easy to undo.
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Default 25-08-2010, 01:01

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Originally Posted by NewStuff View Post
That makes sense. I assume a Double Fig 8 would work for that?
Yup a double fig 8 would be fine altho very difficult to adjust and takes up a lot of rope. A simple Fig 8 and an Alpine hitch would of been fine. Very strong and very easy to adjust and undo afterwards and with a correctly rigged y hang comes a very low fall factor should a fail occour.

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Originally Posted by Earth Worm Jim View Post
That's acutaly a very good point Ed!
Yes the loads are a lot higher when you rig the ropes like it was but given the options there was nothing else that could have been done. The actual fall factor was significantly less than 1 if you could see the whole rig and I did have a think about it before I went down the rope. FYI there was four separate and independent anchor points.

I was a little surprised when I came to undo all the knots, in that none of them seamed to have had a significant loads on them. They where all quite easy to undo.
Yes there was 4 independat ancor points but the stress you have put on those 2 tope ropes is unbelivable and a failure of any one of the ancor points would have been tremondous on the ropes and the rest of the ancors. Have you ever read Life On a Line?


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Default 25-08-2010, 12:38

As Edd states, it's not the cleverest way to rig a pitch, 99/100 it may not fail but when it did the consequences would be significant.

Dom, you owe it to the people you are taking into places requiring srt that your rigging is "bomber" anything less would be classed as manslaughter!

between you guys, you have built up a good little exploring team and are to be commended on that, however, more than one person in that team should have the ability to rig a basic pitch and to be able to spot potential issues with the rigging of the other person. So, to the other people who go exploring with Dom you need get your head in some books and learn the basics..


Egregious!
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Default 25-08-2010, 13:14

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Originally Posted by Morrisey View Post
As Edd states, it's not the cleverest way to rig a pitch, 99/100 it may not fail but when it did the consequences would be significant.

Dom, you owe it to the people you are taking into places requiring srt that your rigging is "bomber" anything less would be classed as manslaughter!

between you guys, you have built up a good little exploring team and are to be commended on that, however, more than one person in that team should have the ability to rig a basic pitch and to be able to spot potential issues with the rigging of the other person. So, to the other people who go exploring with Dom you need get your head in some books and learn the basics..
Good point well put! I'm seriously thinking about doing a course but they are frickin expensive.
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