In this article, I emphasized on  the case of the Great Pyramids of the IVth dynasty, mainly the three Pyramids of Giza. I focus in particular on the Cheops'one, the most enigmatic because of its internal design, but actually and paradoxically the most revealing of the Pyramids' constructive system we present here (2).

According to most researchers, the pyramid stones do not come from "very far away in Arabia", and the building process was not achieved with the help of "lands gathering needed to haul the blocks", but by directly borrowing the plateau of Giza's surrounding materials and using a method of construction we define as "pyramidal growth".

Most researchers define precisely a set of rules for the pyramidal constructive method. The first principle : "to make use of the surrounding stone and to stack it up into the centre"; the operative algorithm : "to lay a block on two others in a corbelled way and this, in an additive and recurrent manner"; the constructive system: "block by block, side by side, by successive covers" defining in this way the "pyramidal growth". As a consequence, this "pyramidal growth" is a necessary function of available techniques and of the dimensional characteristics of the building materials. Moreover, the building blocks and the general display of the exploitation sites are a direct consequences of the natural geological features and of the failure patterns commanded by tectonics. .

Interestingly, this constructive system can be modelled in order to investigate its consequences. researchers found that it leads necessarily to "pyramid-shaped" constructions without sophisticated conceptual plans. The shape of the pyramids (its angle) is a direct function of the local display algorithm. Moreover, the corollary of the method leads to a natural interpretation of the devices found inside the Pyramid of Cheops. research shows that the internal gallery system can be created by anticipation of the construction method of one face of the pyramid, with an inclination angle matching the real one. Also the Great Gallery can be interpreted in a purely utilitarian way, as an amazing oblique lift, allowing to haul up the 52 monoliths made of granite of the King's room, until 65 meters height.

More useful technical data from Engineering point of view check these articles out

A scientifically, technical and operative research02

Origin of materials03

The Process of Pyramidal Growth04 {This radical concept had been recognized  by most of the modern researchers}