Perring: sides about 108.05m (206.4 cubits)

Perring probably based his measurements on the assumption the inclined face of the granite casing stones went down to the bottom edge without a vertical step at the bottom to accommodate the pavement slabs.


Petrie based his measurements of the lengths of the sides, on the assumption the lowest course of casing stones was about 2 cubits high (1.05m) which is about the mean height of all the courses of granite casing stones. 2 cubits below the top edge of the first course of casing stones, the inclined face would have been cut vertically down to the bottom edge of the casing stones. The limestone pavement slabs would then have been laid to meet this vertical face and the inclined part of the face of the casing stones would then have ended at the top surface of the pavement slabs. Petrie explains his reasons for these assumptions here: [www.ronaldbirdsall.com]


Petrie's mean length for the E, S, and W sides: 105.5m (201.5 cubits)

Goyon measured the W side and found it to be 102.2m (195.2 cubits). Petrie has 105.5m (201.5 cubits) for the W side. However, we do not know how Goyon arrived at his length.


M&R believe Petrie's measurements are the closest, and suggest a probable intended side length of 200 cubits probably because its a nice rounded figure, but Petrie's mean length of 105.5m (201.5 cubits) is still the best bet, even though the extra 1,5 cubit seems odd.

CT