GREAT PYRAMIDS OF EGYPT

First part :**PRELIMINARY STUDIES 1990-97**

- C.V. Architect-Urbanist EPFL
- 1996 - Pyramids Constructive System
- Pyramid increase: simulation
- 1997 - General presentation :

Second part:**DOCTORAL STUDIES 1998-2002**

- PhD Thesis in Civil Engineering
- 2002 - Publication of "Le Génie des Pyramides"
- 2002 - From geology to construction
- 2002 - Pyramids and Mathematics

Third part:**POSTDOCTORAL STUDIES 2003-2017 **

- Engineering of pyramids
- Construction model
- Construction phases infographics
- 2005 - World Year of Physics
- 2006 - Fun and educational learning
- Journal of the Palais de la «Découverte»
- Paleo-topo-stratigraphic simulation of the Giza plateau

Fourth part:**FINALIZATION STUDIES 2018-2019**

- Geological hypothesis
- Open letter to Hany HELAL
- Circular letter to my peers
- Successive panels of exhibition
- Pedagogical experiences
- Curriculum Vitae Researcher

Part five:**PUBLICATION & ANIMATED INFOGRAPHIC MODELING 2019 - in progress**

**EVENTS PROJECTS**

- 2006-2008 - Paris, duo de ses pyramides
- 2010 - Of Engineering Works & Men
- 2013 - Marseille, pyramid of knowledge

Go to the second site of

Pierre CROZAT Architect - Urbanist

Conference given on September 26, 2017 in the auditorium of CULNAT (The Center for Documentation of Cultural and Natural Heritage) in CAIRO (Egypt)

- to the left, in the box, the degree pyramids of the III° dynasty and the 5 Great Pyramids of the IV° dynasty, located on the western bank of the Nile; the pyramid plateau extends for 60 km,
- on the right, and on the same scale to compare their respective sizes, at the top the Pyramids with degrees, in the dotted box the 5 Great Pyramids and at the bottom the small pyramids with text (text of the dead).

- top: that the excavation corresponds to the fill; digging a trench is a shovel slope; the moat is the borrow area of the fortification wall materials,
- in the centre: that a pyramid will borrow its constituent materials around the perimeter (hence the choice of its location),
- Below: the «sand castle theorem»: a 3-year-old child sitting on the beach, with his 2 hands picks up sand to make his pile. He alone will find a way to make it grow (or increase): “the increase in volume” illustrated by the following photograph.

The precision of A. Barguet “sometimes-sometimes” rather than “or -or” or “what some call -and others” or as this English version “sometimes / sometimes” is also more subtle which suggests that the same block changes its name in the course of its implementation: krossaï when he climbs the stairs (that these 2 terms generate) and bomides when he arrives at the top he is “seated” horizontally then serving as support for the next krossaï.

- below: first set of constitution of the series of positive integers: 1; 1+1=2; 2+1=3; 3+1=4; etc.
- in the middle: series of Triangular Numbers or Summation of Numbers of the first series: 1; 1+2=3; 3+3=6; 6+4=10; 10+5=15; etc. either N=n (n+1)/2
- top: Square Number Series or Odd Number Summation: 1; 1+3= 4 (2²); 4+5=9 (3²); 9+7=16 (4²); etc.

For the Architect that I am, the Triangular Numbers count and form each of the faces when the series of Square Numbers represents the increment of the base, of the «pyramidal increment».

Finally, of these 2 faces which total 36 points, we must remember the second one (of Pythagoras) because we will be able to build it according to the «system».

Bottom sketch shows 10 quarry blocks and “lateral” method of stacking (do not forget to shift the “crossaï” in depth by a third, which gives the angle of the pyramid faces) and leaves a support for the Herodotus wood "machine" whose machine movement will have to respond to this maneuver, a lever on a tripod should suffice.

- 4 blocks and a 5° placed on top constitute a central pyramid,
- construction of the 1° cone-shell, the 4 faces being mounted simultaneously, then 2°, etc. It is always the same machine movement, constantly repeated, that “produces and trains”, which constitutes the engineering of the (great) Pyramids.

Click in the window to start the animation.

The angle of the ascending corridor, the the Great Gallery –GG– and the ramps of the inclined beam is given by the stacking of the blocks (2 heights for 5 entablature values).

Note that the ramp, allowing the setting of the discharge arch at the top of the risers, corresponds exactly to the North foot of the pyramid. The blue coloured surface should (what remains to be demonstrated) correspond to the portion of “bedrock” of the uneconomic shelf, the sides of this isoscele triangle being the exploitation lines of the subhorizontal quarries at the very periphery of each cone-envelope of the pyramidal increment; which presupposes that the Queen’s Chamber would be placed on the original Plateau (pre-existing).

On the right, from one cone-envelope on the other one cuts the same and/or fills it.

These block extraction stigmata actually indicate the dip of the Plateau bedrock (which will be inverted to the ceiling of the unfinished Underground Chamber).

Click in the window to start the animation.

- the implantation of the 3 pyramids of the Plateau de Gizeh aligned (by their angles SE) parallel to the Axis of the fold (in North 45°) according to the Longitudinal Diaclases - ΔL
- the orientation of each of them on the network of the Diagonal Diaclases right and left (Δdd and Δdg), diagonal in relation to the Axis in N 45°, that is to say on the 4 cardinal points, due to the exclusive and rational fact of the GEOLOGY.

Note the relevant (underlined) observations of this author: a) Sphinx head and b) Sphinx front legs

Here, horizontal streaks on cullet deposited by the evaporation of mineral salts after closed natural “diagonal” fracturing -Δdd & Δdg-, due to shear (closed) and therefore difficult to spot contrary to the large open ΔL & ΔT diaclases that everyone can see.

The second question: “Did you see at the foot of the pyramids, is it identical?” His answer was, “No, but if you want to build one, I want to be one!”.

The layer (a) Auversien does not appear upstream of Khéphren.

The pyramid borrows its materials only from the single layer (g) building stone (easy to work, compact, but "delitable"), which is located at the SE below and the NE above (without touching the Layer (f) underlying) justifying a complementary loan to the Layer (g) above the western quarry front.

The Layer (a) Auversien, deposited «on lap» should logically be reduced «by whistling», up to what?