cladking Wrote:
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> And you're still assuming 12 meter vertical walls
> are insignificant and that a 30 degree slope is
> navigatable.
Your always assuming you know what you are talking about.
[
www.pbs.org] read it again. close to bottom of article
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Meanwhile, Davis's crew had constructed a scaled-down replica of the steepest ramp still existing on Easter Island (see Figure 4), a daunting 1:4 or 25 percent slope.
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The project we set for ourselves was simple: move the rock up the ramp and rotate it at least 90 degrees with levers alone, using no more than the working surface of the ramp for the purpose. After a nervous first effort that turned out to be serious overkill, we cut the crew back to see how few people could move the sled on level ground. Eight long levers handled from atop the rock was all it took. Each person had a mechanical advantage of about seven, imparting about 700 pounds of forward force—a total of 5,600 pounds for the group. Their combined weight and that of the sled added about 3,500 pounds to the 13-ton block, so the coefficient of friction must have been about .19 (5,600 / 29,500 = .1898).
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Adding people as needed along the way, we moved the load up the steepest part of the ramp with 26 people. Unintentionally, we apparently arrived at the perfect balance between friction and mobility, since the sled tended to backslide ever so slightly when forward pressure was released. Two "brakemen" easily prevented this by jamming their levers whenever we stopped.
So it seems as few as 7-10 people could move 13 ton blocks. How many tons were you talking about again?
A 25 degree ramp, 13 ton block, 8 people and some short wooden levers worked as a minimum. So this is like 5 of your "special blocks" and with 30-40 people I can safely assume the blocks could "soar up the the side a bowshot at a time".
So if we took 1/5th the weight(1 block of yours) and put 5 times the workers to use we would have a factor of about 25 to put towards the time it would take to move it.
As the article put it, I think, it was like 55 feet in 2 hours or a foot every 131 seconds. So if we factor in the new variable of 25 we would get 300 feet in 26 minutes and 11 seconds.
Like the article said more/better lubricant would quicken the pace. I believe more experienced workers would quicken the time also.
This is faster then that magical geyser and/or bucket brigade could fill the bull's butt water slide.
Treat the earth well, It was not given to you by your parents, It was loaned to you by your children.
Native American Proverb
