drilling granite
drilling granite
(OP)
Hi guys,
I need to drill granite rocks on vertical cliff for a project of sky walk as 10''x7'' inch to accommodate 90 beams as supporting structure .. on the group we have different idea on how to start project like that but we would like also ear from somebody that has similar experience how to drill in this unusual position and which tools better to use (cliff is 800mt high ) I was considering to use Jet Stick for drilling horizontal wholes on the block ,did u think my idea is technically possible ?
Tks to all
I need to drill granite rocks on vertical cliff for a project of sky walk as 10''x7'' inch to accommodate 90 beams as supporting structure .. on the group we have different idea on how to start project like that but we would like also ear from somebody that has similar experience how to drill in this unusual position and which tools better to use (cliff is 800mt high ) I was considering to use Jet Stick for drilling horizontal wholes on the block ,did u think my idea is technically possible ?
Tks to all





RE: drilling granite
RE: drilling granite
RE: drilling granite
Why haven't you contacted the people that have already built an identical structure: http
TTFN
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RE: drilling granite
RE: drilling granite
for this reasons we would like ear from somebody that has specific knowledge or has made similar drilling experience; if u can pls forward you idea on it..
the 90 beams as supporting structure protrude 30" outside rock ..
Question was :Due to unusual drilling position which tools better to use ? jack hammer (with vibrations may we penalizing rocks stability) or diamonds tools ?(mind that front cliff is 2500 ft high ) I was suggesting to use Jet Stick torch for drilling horizontal wholes on the block ,did u think my idea is crazy or technically possible?
Stability of top stone ; with no sign of fresh cracks on granite ,no sign of spallation ,no sign of slope instability what test we must do to reach safety level ?
I'm understand that identifying the stability is not possible by pics, but grouting (as suggested from a company..) a massive blocs like that has "millennium" of water erosion on the crack around is something worthwhile in the real world ?
hope now is more clear
Tks to all
RE: drilling granite
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RE: drilling granite
If you want some ideas on how to proceed, ckeck out how Mount Rushmore was developed in the 1930/ 1940s. That is how I would approach this project, but lets not fool ourselves, dozens of men lost their lives on Mount Rushmore, and today's policies and procedures will not change that....... you will have to accept that fatalaties are likely if you proceed.
RE: drilling granite
The Grand Canyon Skywalk video is quite instructive; the moment is countered by the entire mass of the cliff, and everything related to the rock is in compression, which is what's most desirable. The walkway isn't even in contact with the rock; it's completely supported only by the pilings, and the pilings look to be close to 100 ftinto the rock, and set back from the edge from about 5 ft to about 40 ft. And, this is on fairly solid sedimentary rock.
The factsheet has lots of good details: http:/
This is not something to be done by amateurs. You're going to need a raft of specialists, probably including at least a handful of geo specialists and they'llave to argue amongst themselves until a consensus is achieved. ONLY THEN, should you even contemplate what the implementation should be. Your cart is drastically ahead of the horse; worrying about how to drill for anything is absurdly premature.
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RE: drilling granite
just to be extra clear our idea was not to built a cantilever similar of grand canyon ! too expensive too technological ...our starting idea come from this place Tianmen Mountain http://recommends4u.blogspot.com/ where very similar project has been done in environment almost identical to one we have...simple 30" protruded face beam anchored on granite cliff ,we even contact the Chinese park office for info and the answer was simple : "you don't need to know so many things..this project is just normal building project that can be done around the world from any qualify building company.." !! looking at the rudimentary structure they prepare leave me breathless but project has been done there..
RE: drilling granite
I don't see anything that implies a Jet Stik is appropriate for drilling holes.
TTFN

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RE: drilling granite
I usually smile to myself when I read some of these questions and the first answer is along the lines of 'get a professional to do this', but in this case, where you hope to make money long term from tourists, their safety and thereby your (ie the locales) reputation has to be paramount, and as such I don't see any test of stability being 'unnecessary' or 'trashed money'.