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firemedic1015 wrote:http://www.accessfund.org/site/apps/nlnet/content2.aspx?c=tmL5KhNWLrH&b=7903133&ct=13134839¬oc=1
I wonder if this will affect anchor placement in NPS caves?
tncaver wrote:Hopefully their policy
is flexible. If not then they are not really concerned about safety but more concerned about policy. Please tell me this isn't so.
rjack wrote:tncaver wrote:Hopefully their policy
is flexible. If not then they are not really concerned about safety but more concerned about policy. Please tell me this isn't so.
Power tools have been prohibited in wilderness areas for at least 20 years, and its never been a flexible policy. You don't have to set a power drilled bolt. If a hand drilled bolt won't be safe you can turn around and leave it for some future generation to figure out an alternative.
tncaver wrote:Many deep set anchors such as expansion bolts can be removed after they are used and the holes can be filled in with dirt, or mud. The anchor area
can be made to look as if there never was an anchor set. Yet, hand driven anchors such as Petzl are pretty much permanent. The deeper expansion
bolts can be a larger diameter shaft, which should be stronger as well. Seems to me the power drill anchors have all the advantages. Maybe it's time
for the NPS to rethink their policy.
PeterFJohnson wrote:As gindling pointed out, hand drills like Petzl Rocpec accept SDS drill bits up to at least 12mm. So the bolts you are referring to can be placed with a hand drill. There are other safety concerns, but diameter, depth, and bolt choice are roughly equal for hand drills and rotary hammer drills - limited of course by your time and arm strength.
Extremeophile wrote:I would also like to refer you to an article in the current issue of the NSS News that demonstrates what is possible with hand drilling alone.
tncaver wrote:Extremeophile wrote:I would also like to refer you to an article in the current issue of the NSS News that demonstrates what is possible with hand drilling alone.
It may be possible to swim from Florida to Cuba...but is it practical?
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