Gaping Gill winch meet
- Thread starter Pegasus
- Start date
HardenClimber3
Member
I all depends where you start from (and stop...)
HardenClimber3
Member
Everyday, off to work we go...
Judi Durber
Member
98.10 meters = 321ft 10 inches + a dinky bit to keep everyone in the same (correct
measurement)
HardenClimber3
Member
It would have been much neater without that extra 20ft.... :-\
Anyway, people are very welcome to join us.
Selected entrances will be rigged for SRT.
Competent cavers (with BCA insurance) with appropriate equipment wishing to use these entrances should enquire at the booking in tent to check details, leave call out details etc.
And it is possible to get the famed mud off....(use of Fell Beck is free)
Anyway, people are very welcome to join us.
Selected entrances will be rigged for SRT.
Competent cavers (with BCA insurance) with appropriate equipment wishing to use these entrances should enquire at the booking in tent to check details, leave call out details etc.
And it is possible to get the famed mud off....(use of Fell Beck is free)
HardenClimber3
Member
HardenClimber3 said:
oops,
with picture this time
(before)
Robert Scott
Member
They know a lot of things that you don't.braveduck said:
Robert Scott
Member
John, isn't it 321ft 10 inches + a dinky bit from the ledge to the deck vertically below? However the descent is not directly vertical but strays off westward adding extra feet to the descent.Judi Durber said:
98.10 meters = 321ft 10 inches + a dinky bit to keep everyone in the same (correct
Over the Hill
New member
"Competent cavers (with BCA insurance)"
BCA Insurance?
Do you mean competent cavers with Third Party Insurance Insurance for caving? Some of us have this cover via other organisations.
BCA Insurance?
Do you mean competent cavers with Third Party Insurance Insurance for caving? Some of us have this cover via other organisations.
HardenClimber3
Member
Yes (as I posted it I thought....someone....), as you say BCA like insurance (and some will be from overseas with similar insurance).
You will be asked to confirm you have appropriate insurance and we've no wish to get involved in details.
You will be asked to confirm you have appropriate insurance and we've no wish to get involved in details.
Pitlamp
Well-known member
Robert Scott said:John, isn't it 321ft 10 inches + a dinky bit from the ledge to the deck vertically below? However the descent is not directly vertical but strays off westward adding extra feet to the descent.Judi Durber said:
98.10 meters = 321ft 10 inches + a dinky bit to keep everyone in the same (correct
No, we measured it vertically at 98.10 metres. (You raise a good point about a deflected descent reducing accuracy but that was taken into account by the CPC members involved.)
For most cavers' purposes, if you say GG is 98 metres deep, that's good enough.
graham
New member
Pitlamp said:
What you actually measured, of course, was the distance between two survey points. It's where these points are that may be of interest. If you say "98.10 m" and "vertically" you should really quote the precision to which your instruments could be read, their accuracy, and of course whether they had been calibrated.
Pitlamp said:
Of course.
I'm willing to bet that most cavers don't measure their ropes to that degree of either accuracy or precision. It's only us pedantic surveyors who want or need to know more.
Pitlamp
Well-known member
Hello Graham - I agree with your thoughts above. It was measured with two 50 m non stretch fibreglass surveying tapes connected accurately together. To give further info right now I'd have to look up a publication - and I'm a bit strapped for time as I type. However, I only posted that information to satisfy Inferus that CPC members are able to measure pitches after all, not to disseminate any detailed survey information!
graham
New member
Pitlamp said:Hello Graham - I agree with your thoughts above. It was measured with two 50 m non stretch fibreglass surveying tapes connected accurately together. To give further info right now I'd have to look up a publication - and I'm a bit strapped for time as I type. However, I only posted that information to satisfy Inferus that CPC members are able to measure pitches after all, not to disseminate any detailed survey information!
2 x 50 m tapes, eh? Lucky it wasn't as deep as your find in t'Peak then. I know Fibron tapes are meant not to stretch under the tension that can be applied by surveyors pulling on them, but I wonder whether the weight of two of them together might have some effect. A laser DistoX would be better - except that its range is only 80 m.
Over the Hill
New member
But how long is a piece of string?
