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pyramid - blocks[3[5 B.Construction principle In our belief...

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The main material of the pyramid is limestone. We believe ancient Egyptians piled up the blocks to form the lower and heavy half. Then casting(…)was used to form the pinnacle [2] . A. Resource&Transportation In our opinions, (1) boats were used for transporting big blocks from stone pits(…..). ] . Evidence: the boat shipbuilding industry was booming at that time, coupled with the Nile [4] .(2) At the same time, other people transported stones of (1) and from some closer mountains to the building site. They might put round logs under the stone. Principle: (rolling friction)<( sliding friction). We know that the Egyptians at that time had owned the knowledge of the lever and therefore they could put the stone on the round logs. ( ? ? ? ? ? , ? ? ? ? , ? ? ? reference ? ? ) Some people could drag the stone using the rope and at the same time they could use the lever to help to move the
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Unformatted text preview: blocks. [3] [5] B.Construction principle In our belief, they built the pyramid level after level. When building a level, they first built a “spiral ramp” in order to transport blocks to a higher level. Principle: The slope of this ramp is 0.07, which made pulling blocks along the ramp possible. Around the corner (turning) of the ramp, they left the space open ,so that the angulatus blocks can be moved onto another straight ramp. With the help of spinal ramp they finally succeeded in building the pyramid [6] . Reference: [1]. http://www.sciencedaily.com/releases/2008/03/080328104302.htm [2]. http://www.youtube.com/watch?v=znQk_yBHre4 [3]. http://www.catchpenny.org/howbuilt.html [4]. http://baike.baidu.com/view/261553.htm [5]: http://s9104632.blogspot.com/2007/11/blog-post_7792.html [6]: http://www.youtube.com/watch?v=lasCXujNPfs...
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