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.
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