Holger Isenberg Wrote:
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> That's not a generally true statement about the
> Great Pyramid.
> The base length deviation of the four 230m long
> sides is about 14cm.
> The standard tolerances for modern concrete
> constructions in Germany are 30mm for 30m and
> larger parts. For even larger parts
> building-specific tolerances are usually defined.

Not as good as modern standards, according to this manual of construction tolerances: [catalogimages.wiley.com]

It's 3/4" per 100 feet, which means 4 1/2 inches for a building with those dimensions.

The GP is not exactly square [www.theglobaleducationproject.org]
West: 755.76 feet
North: 755.41 feet
East: 755.87 feet
South: 756.08 feet

Nor are the blocks regular in size. They're of many different sizes (including ones that are the size of a dinner plate) and patched together with mortar. That's hardly precision.

And the slope changes, too, as well as it not being exactly straight (reference to it as an "8 sided" pyramid)

> The precision of the angle and diameter of the
> descending passage is at 10 times better than
> modern constructions I once read, but cannot find
> numbers this minute.

I find that hard to believe, having traversed that passage myself just a few years ago. The walls aren't smoothly polished (nor are they rough enough for good traction.) It's polished about as well as the King's chamber was... which is nice but hardly matches some of the polishing we put on our modern stone buildings. It does descend downward at a straight angle, but there's nothing special about that. I've been on ramps in buildings that were more precise in their construction.

-- Byrd
Moderator, Hall of Ma'at