They weren't encoding pi - they were using their precursor version of pi to include the symbolism of the circle into the design, for traditional funerary purposes.

As Professor Petrie said "We should grant that they were in the builder's design",

But the antechamber should be avoided as its architecture is far too complex and irregular for any conclusions to be drawn from it.

The beauty of the King's chamber is that there are effectively only three dimensions, so the symbolism is glaringly obvious and can be accepted with confidence when considered within the wider historical and archaeological context.

Dave Light

The Journal of Ancient Egyptian Architecture JAEA:
[egyptian-architecture.com]
[glasgow.academia.edu]
[egyptology-scotland.squarespace.com]
Dave's Archaeology Homepage:
[arkysite.wordpress.com]