The pyramid blocks were hewn from quarries using stone and copper tools. There are examples of each stage of block extraction at existing ancient quarries. Granite was quarried using pounding stones of dolerite, some of which have been found laying about the quarries. The blocks were transported to the pyramid site from remote quarries using barges, and from local quarries using wooden sleds. The Egyptians did not use the wheel during the Pyramid Age, an invention that would have been of limited used on softer ground under heavy loads. The sleds were dragged manually, sometimes with the help of beasts of burden, over smoothed roads. Some of the existing pathways were equipped with transverse wooden beams to lend support to the sled. A lubricant may have been poured upon the road to reduce friction. (For more information, how the massive blocks were raised to the height of the rising pyramid is not understood for certain. Earthen ramps were used at least in the initial stages of construction. Extant ramps have been found at the pyramids of Amenemhat I and Senwosret, as well as at several other sites. Traces of disassembled ramps at pyramid sites are even more common. The ramps were made of brick or earth and rubble dressed with brick for strength. They were built up as the pyramid progressed upward, and removed as the pyramid was finished downward. The ramps likely took the form of an inclined plane at the beginning of work, but the configuration in later stages has long ...
http://www.youtube.com/watch?v=pmgFrvg77iU&hl=en
วันจันทร์ที่ 3 พฤษภาคม พ.ศ. 2553
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