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Topic Date User
Rap bolts chopped above Serpent 23-Apr-2012 At 2:44:22 PM ZERO
On 20/04/2012 Eduardo Slabofvic. wrote:
>And I'll go around counting how many unnecessary bolts you put in, then
>compare the cubic meters of rock destroyed by all those tiny little holes

Just did some rough sums.
a 90mm deep hole (probably not deep enough but makes the maths easier) drilled with a 12mm bit = 10 cubic cm (roughly).
Therefore 100 holes would remove the equivalent of 1 litre of rock (yes, I know rocks aren't measured in litres, but for comparison....)
That's 100,000 bolts or 50,000 double bolted anchors (excluding staples) to remove one cubic metre of rock.
Someone else can work out the equivalent in feet running up and down gullies to remove a cubic metre of soil and vegetation.

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