From: De Eye-lands, Mon
What's really mind-boggling about how it could have been made is that some of the stones weigh 50 tons. Scientists have tried to replicate that but the rocks kept sinking the rafts, because you know - 50 tons is a lot.
They had to have done it somehow, though.
50 tons of granite is about 602 cubic feet (8.44’ x 8.44’ x 8.44’, mighty big block); limestone's a skoosh less dense, basalt's a skoosh more. If ya dangle it ‘under’ a raft, it displaces 19 tons of water, so it only ‘weighs’ 31 tons. Still a bunch, but a lot less than 50. Archimedes did the hydrostatic math in ~250 BCE. Maybe the scientists should have consulted some sailors.
The Britons were moving the 50 ton sarsen stones overland from Marlborough Downs to Salisbury in ~1700 BCE.
[ed] just ran the numbers for breaking strength of natural fiber rope (abaca fibers, i.e., manila hemp). A 1" rope has a 4 ton breaking strength. You would only need 8-10 loops to secure a 31 ton object.
< Message edited by Symon -- 10/18/2013 4:29:32 PM >
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