The Megalith Movers Prehistoric Engineering
Blog 30th May 2015    The first job on Monday was to build a permanent working platform under the top end of the prone Obelisk. This will be in the form of a crib around ten feet square and two feet high, and will be made of 3 inch by 3 inch timbers laid in alternate length-ways and cross-ways timbers. This was quickly accomplished, and we then set to work on the top ring of the support tower which was to be attached to the top end of the Obelisk using Spanish Windlasses, to be held in place solely by the friction created by the windlasses.    The working platform will provide support for the fulcrums we will be using to lever on. Once we have established the perfect position for the main fulcrum (the one beyond the end of the Obelisk), this will become the main lifting fulcrum. The position of this main fulcrum will not change, neither will the height.    Two secondary fulcrums placed either side of the Obelisk will ensure the support column is not tilted during each small lift, and as the Obelisk rises by about 3 inches per lift more timbers are inserted underneath the existing timbers, in the form of a square ring of timber and joined to the previous ring with wooden pegs. What we are doing in essence is using the fulcrums and levers as a form of hydraulic jack, to ''jack up'' the column while we insert the next support ring.    As the path taken by the top of the Obelisk begins to arc over towards the plinth, each ring will be tailored to the space available underneath, and the column will begin to arc over following the path of the top of the Obelisk. In this way we hope to resist the ever changing forces trying to resist us.    Below are a couple of pics of the first two rings, attached to the Obelisk by four Spanish Windlasses, and held in place entirely by the friction so created.    Part of the third ring has also been inserted under the first two.    Two more pics show the fourth being created as the Obelisk rises higher. We have now abandoned the concrete blocks we were using as counterweights on the ends of the levers, and are using bags of sand instead, as a bag of sand falling on your toes should be less painful than a concrete block. Also this strikes me as being more authentic as the Ancient Egyptians had plenty of sand, if they too were short of manpower.   I am hopeful that by next weekend we will have created another four or five rings under the existing rings, and the tower will have begun to arc over towards the plinth. You should also be able to see how the base of the tower becomes wider as the tower grows. Gordon <<previous blog page next blog page >> To read & post comments click here return to top of this page

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