The Great Pyramid of Giza

Construction

The construction of the Great Pyramid of Giza is a marvel of ancient engineering. Gary Arndt explains that it required an estimated workforce of 13,200 people on average, peaking at 40,000, over 27 years. Contrary to popular belief, these workers were likely seasonal laborers, not slaves, as the Greeks had assumed 1. The pyramid's design includes intricate chambers and shafts, with a notable void discovered above the Grand Gallery through cosmic ray scans 1.

One of the biggest mysteries was how they got the stone up that high. The current best theory is that they built a spiral ramp around the pyramid.

--- Gary Arndt

The pyramid's dimensions are precise, with sides measuring approximately 755 feet and a height originally at 481.4 feet, showcasing the advanced architectural skills of the ancient Egyptians 2.

   

Materials

The materials used in the Great Pyramid's construction were sourced from various locations, showcasing the Egyptians' resourcefulness. Gary Arndt notes that the limestone blocks were quarried nearby, while the granite stones were transported from Aswan, near Egypt's southern border 2. Originally, the pyramid was covered with smooth, white limestone cladding, much of which has been removed over time for other constructions 2.

The Great Pyramid is built out of an estimated 5.5 million tons of limestone, 8000 tons of granite and a half a million tons of mortar.

--- Gary Arndt

Dating the pyramid was challenging due to the lack of inscriptions, but carbon dating of organic materials like mortar and timber has provided a timeline, linking it to the reign of Pharaoh Khufu 3.