Hello Don,

The distance between the face of the Great Step measured from near its foot (the upper part being extensively broken away) and 6" from the edge of the Gallery's east ramp and the base of the north wall of the King's Chamber at its N-E corner is 330.22", the length of the KC east wall at its base is 206.43", giving a total distance of 536.65".

The height of the King's Chamber from the surface of its raised floor is somewhat varied.

The floor is tilted and its depth below the first course joint (the Chamber's five wall courses measure an average 47.045" +/- 0.051") varies by as much as 2.3" - giving it a height above the base of the Chamber's walls from 4.1" to 6.4".

If, as is often suggested, the height of the Chamber from the surface of its floor was intended to be half the diagonal length of the Chamber @ 230.76"*, then the intended level of the floor surface would be about 4.44" above the base of the walls.

At the north-east corner of the Chamber (i.e. at the Chamber's doorway) the surface of the floor is actually 4.3" above the base of the walls.

However, it is possible that the top of the Great Step (which is 5.2" above the base of the King's Chamber walls) was the intended floor surface level giving us 225.56" for the height of the Chamber from the surface of its floor.

Regarding the so-called relieving-chambers, I only know of an estimated height from the floor of the King’s Chamber to the apex of the fifth chamber, which puts it at around 825” (which is equivalent to 40 royal cubits - which could be viewed as twice the length of the King's Chamber).

MJ

*an idea I disagree with