On: Engineer: Egyptians built pyramids by piling rubbl...

[seferphier]

I was wondering too. This video explains in more detail how they used pressure to move the water up

http://youtu.be/C1y8N0ePuF8?t=15m20s

[gus_massa → seferphier]

The video says that they toke the water from springs under the pyramid. If the spring has enough pressure to make the water climb to 150 m, then just opening a vertical hole you must get a 150 m water jet. (Really, the water in the jet moves faster, so it has more internal frictions with the spring wall.) In Yellowstone, Old Faithfull has 50 m water jets, but it’s a geyser, not a cold spring with a lot of water.

[fblp → seferphier]

Archeologists would be able to find evidence of these water piping from springs underneath the pyramid.

[Freestyler_3 → fblp]

I agree, they say that they should have found evidence of ramps... well they should have found evidence of this water structure if it was used.