On 6/03/2014 kieranl wrote:
>On 5/03/2014 One Day Hero wrote:
>>I don't see significant difference between 12mm holes and 16mm holes.
>It appears that we disagree.
Yes I'm with you Kieran (you are consistently the voice of reason and logic on this forum btw). 16mm holes are approximately 1.777777778 times as damaging as 12mm holes, a massive 77.8% increase (I know.... amazing right, how someone could even consider doing 77.8% more vandalism to a cliff).
The good news though is that 6mm holes are only 25% as bad as 12mm holes. And get this! 3mm holes are only 6.25% as bad as 12mm holes. The real question we should be asking is why aren't we bolting things with 3mm bolts to save the environment? Admittedly 3mm bolts are not as strong as 12mm, but we could have up to 16 times as many of them, meaning that those 1m run-outs would be reduced to a mere 6 or 7 cm, which would surely reduce the impact of a fall such that the bolts would be fine.
Its surely only a matter of time before Hilti develops a suitable "bolting laser" so we can start using carbon nano-tubes for bolting, to really save damage to the rock.