What levers, you ask.
A shaduf is nothing more than a lever. All levers have in common 2 Fulcrum lengths, which are determined by the location of the apex. You can assist one end of a lever by attaching a counter weight. In the case of the shaduf, the counter weight is regulated by how much the man operating it, can pull down on a rope, overcoming the counter weight. It is limited in it's application. As we are working with a 20ft. pole (249'), the short end of the fulcrum needs to be 56" minimum. We now need 609 lbs to lift a cubit stone. This will require 5 men, unless a counter weight is somehow employed.
In this scenario, of using it to build the Pyramids, I found a BIG problem since my last post. 3D illuminates much, as it forces us to reconsider. Look what happens when you swing the lever, in an effort, to place a stone up on the next higher level. It pushes the men dangerously out over the Pyramid. So now we have 5 men dangling on a rope(s), out over empty space , with a 9 ft. drop. Even if that were possible, they would need to climb back up over 5-6 levels, each time. If the stones were larger than 1 cubit, it amplifies the problem.
Unless someone has a solution, this scenario look improbable. I will be happy to provide my Sketchup file, if someone wants to contest this conclusion. You can download a free Sketchup Viewer here: [www.sketchup.com]
Once opened, go to File/3D Warehouse. Search on Pyramid Stones.
This will allow you to Orbit, Pan, etc.
Edited 3 time(s). Last edit at 08-Apr-18 00:11 by Steve Clayton.