Joseph, This is starting to sound kind cool! Cribbing would be needed on the other side of the glass wall too. I bet we'd get lots of Oooo's and Ahhh's doing it this way. Would take quite a while though. I wonder what cost effectiveness this would have compared to a hoist of some sort. Either way it's gonna cost 'em. :-) Greg Newell At 12:20 PM 9/2/2007, you wrote: >Jacking and using cribbing is an old technique, >which is still used today with lots of modern >machinery. As I said before, houses, >lighthouses, airplanes, submarines... in short, >anything can be elevated to whatever height you >would like. Twenty feet for a 600 lb object >would be very doable. Yes, it takes skill and >yes it takes the right materials. Usually the >top segment is bridged over the wall to another >short pile of cribbing for the horizontal phase. >I have seen this method used to lift houses to >incredible heights. Somewhere I have a picture >of a house sitting on cribbing about 80 feet in >the air.A 300 foot submarine was moved from a >dock to a display area hundreds of yards away, >up and over an elevated railroad track even. >It was my understanding that nothing heavy could >be used on the floor, precluding use of cranes, >lifting devices, etc. Just trying to give an >alternate technique that would work. Maybe not >the one you'll use, but certainly worth studying >the history. The use of cribbing and air bags >used as the jacking force are quite common in rescue tactics too. >Joseph Alkana RPT > > >----- Original Message ----- From: "Farrell" <mfarrel2 at tampabay.rr.com> >To: "Pianotech List" <pianotech at ptg.org> >Sent: Sunday, September 02, 2007 2:04 AM >Subject: Re: Hoisting pianos > > >>I think he means the technique by which one >>jacks a large object up at three or four points >>maybe four inches or so at a time and shoves a >>4x4 timber in place after each jacking session. >> >>I have used this method several times over the >>years to jack a 6,000 lb. sailboat up about >>three to four feet off the ground so that I >>could back a trailer under it and its cradle. >>Cradle is supported at four points. Jack one >>corner up four inches with a little hydraulic >>car jack (or really any jack you can get under >>there), shove a 4x4 under it, take jack out. >>Move on to next corner. Repeat. Repeat this >>procedure about 50+ times and you are there! I >>have done this completely unassisted. >> >>However, I'm not sure how this method would >>work jacking something up to a second story! >>Hmmmmmm, don't think so. Maybe he was thinking of something else......... >> >>Terry Farrell >> >>----- Original Message ----- >>> This is interesting. What do you mean >>> by cribbing? I've not heard that term before. >>> I suppose I could continue to add height to a >>> platform being built underneath the piano as >>> we go. Sounds like a lot of work though. >> >> > Greg Newell Greg's Piano Forté www.gregspianoforte.com 216-226-3791 (office) 216-470-8634 (mobile) 2003,04,05 & 06 winners of Angie's List Super Service Award
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