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How Long Did It Take To Build The Great Pyramid
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It’s not as big as old theories would have you believe. Here’s a back-of-the-envelope calculation, based on simple physics
Considering that nearly 4,600 years have passed since the Great Pyramid of Giza was completed, the structure is still intact. It is a polygon with a regular polygonal base, its volume is about 2.6 million cubic meters and its base height is 146.6 meters, with a missing pyramidion, or capstone. We may not know exactly how the pyramid was built, but we can say with certainty how many people built it.
We must start with a time limit of about 20 years, the length of the reign of Khufu, the pharaoh who ordered the construction (that is about 2530 BC. Herodotus, who wrote more than 21 centuries after the completion of the pyramid, a total of 100,000. It is said that the men worked three months of the year to finish the building in 20 years. In the In 1974, Kurt Mendelssohn, a German-born English doctor, expanded the workforce from 70,000 part-time workers to 10,000 permanent bricklayers.
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These are the most important sermons; we can do better by appealing to simple physics. The potential energy of the pyramid – the energy needed to lift the mass above the ground – is simply the product of the acceleration due to gravity, the mass and the center of mass, i inside a pyramid a quarter of its height. The mass cannot be determined because it depends on the specific size of the black Tura stone and the mortar used to build the house; I think the average is 2.6 tons per cubic meter, so the total volume is about 6.75 million tons. This means that the energy of the pyramid is about 2.4 trillion joules.
To maintain basal metabolism, a 70 kilogram (154 pound) male needs about 7.5 megajoules per day; The constant effort is to increase that number by about 30 percent. About 20 percent of that increase will be converted into practical work, which is about 450 kilojoules per day (various ideas will be considered, but they are not necessary). Dividing the pyramid’s potential energy by 450 kJ shows that it would take 5.3 million man-days to raise the pyramid. If the working year is 300 days, that means almost 18,000 annual jobs, that is, 900 people spread over 20 years.
Sweat Equity Human muscle can build a great pyramid because most of it is reduced in size and the work can be distributed among thousands of people and spread over decades. So it’s not a big waste of public resources – and imagine the consequences!
A certain number of workers may have been required to fit the stones into the building and then to prepare the standing blocks (many of the blocks inside were simply cut). And to cut 2.6 million cubic meters of stone over 20 years, the project will require about 1,500 miners working 300 days a year and producing 0.25 cubic meters of stone per this person. About 3,300 employees are employed. Even if we double that number for planners, designers and managers, and for the labor required for transportation, equipment repair, construction and maintenance in the houses on the site, and cooking and laundry, the total is less. 7,000 employees.
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When the pyramid was built, the total population of the Old Kingdom was 1.5 million to 1.6 million people, so it was not a heavy burden on the country’s economy. The challenge is to organize the work, organize a constant supply of building blocks and provide housing, clothing and food for the labor groups in the Giza region.
In the 1990s, archaeologists discovered a burial site for workers and the foundations of a settlement used to house the builders of the last two pyramids at the site, believed to be no more than before 20,000 people lived there. Two pyramids were built at the site of Giza (for Khafre, the son of Khufu, from 2520 BC, and for Menkaure, from 2490 BC) which is one of the construction projects for planners, managers and workers of the Old. Government. When you build things, it becomes easier to build things – a useful lesson for those concerned about the sad state of our industry.
Is a column devoted to the general analysis of the economic world. Smil conducts interdisciplinary research focusing on energy, new technologies, environmental and population changes, food and nutrition, and on the historical aspects of this development. He has published 40 books and nearly 500 articles on these topics. He is an Emeritus Professor at the University of Manitoba and a Fellow of the Royal Society of Canada (Science Academy). In 2010 he was named one of the top 100 thinkers in the world by Foreign Affairs, in 2013 he became a Member of the Order of Canada and in 2015 he received the OPEC Prize for Energy Research. He has served as a consultant to many US, EU and international organizations, has been invited to more than 400 conferences and workshops, and has lectured at universities. many in North America, Europe and Asia (especially in Japan). The pyramids of Egypt are among the oldest wonders of the world. The fact that they are still standing today, more than 4,600 years ago, is a testament to the strength of their construction. Geologists, engineers and historians have marveled at the discovery of these timeless structures and the mysteries of their construction. One of the most asked questions is, how long did the Egyptians have to build these epic monuments that have stood for years?
The short truth is that no one knows how long it took to build the Egyptian pyramids because they are so old and there is little evidence that has survived from the time they were built. However, it is estimated that each pyramid took between 15-30 years to complete. About 118 different pyramids around Egypt have been discovered. The Pyramid of Djoser near Cairo is the oldest, but the Great Pyramid of Giza in the Giza Pyramid Complex – because of its size and shape, and when it was built, each represents a its challenges and opportunities to overcome.
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Egyptologists’ theories have shown that the Djoser Pyramid, also known as the Saqqara Step Pyramid, took 20 years to build. It has six floors, one above the other, and was 203 meters high when it was first built. The Egyptians estimated the pyramid of Djoser 2670-2650 BC. After it was built, skilled workers spent another 10 years connecting the pyramid to the Valley Temple below, bringing its construction time to about 30 years. Although it was the first pyramid built, it was taller than later pyramids of the same size.
The Great Pyramid of Giza is even larger, at 455 feet tall. Estimates for its closing time vary from 20 to 27 years. The Great Pyramid is the tallest of the three, along with the Pyramid of Khafre and the Pyramid of Menkaure. Together, the group is known as the Giza Pyramid Complex, and all were built as part of a frenetic, 60-year construction period in ancient Egypt between 2550 and 2490 BC, led by a group of
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