The technical drawing of the Great Pyramid that is used within this website and shown on the interactive drawing is a CAD drawing
that was produced from three surveys of the building: the 1993 robotic survey of the pyramid's shafts carried out by Rudolf Gantenbrink ; the 1883
survey by William Petrie; and the survey by Piazzi Smyth published in 1867.
The Petrie and Smyth survey publications are included on this website as PDF files for convenience:
Petrie's survey PDF file
Smyth's survey PDF file
The Upuaut project survey data of the shafts is in the form of a CAD drawing, and the .dxf file is included in this website for convenience only - please visit the www.cheops.org website for the original work.
Upuaut project CAD drawing .dxf file
As an additional source of information there are a series of beautifully drawn technical drawings from Maragioglio and Rinaldi which are also included in this website for convenience
Maragioglio and Rinaldi's survey PDF file
however it should be noted that during the research work I have come across numerous inaccuracies in the numerical values contained in these drawings and reference should be made to the original survey works from which these drawings were compiled.