They hauled the 60 to 80 ton granite beams up the Great Pyramid ,..the same way they hauled it up the escarpment. They were experts in tribology. Through inclination and gravity they were able to break the static weight and bring the weight of the block to a momentary weightlessness,..at that moment they hauled the block whose momentum kept it in motion like an elevator. Just one look at this image the whole story is an open book. Trust me on that.