Just a shower thought. Seeing how these structures took decades to build in their times, and that too entirely with manual labour, I was wondering how long these architectural marvels would take to be built in this post modern era with the help of our technological advancements.
Imagine the world has dedicated its focus and the entirety of its resources on building just one Pyramid as quickly as possible out of the same materials and in the same location as the original ones. The medium of construction has no constraints but the end result must be indistinguishable, structure and composition wise.
I would love to hear how the process would take place in addition.
Design:
The main constraints are geotechnical in nature. You need to conduct borings of the site and the material. It is expected that construction will be faster, so you can’t rely on slowly increasing the load to build up strength. Hopefully, it is found that the soil can take the load. If not, the soil would likely be injected with grout.
Rock removal and finishing:
This should be a lot easier since you can use modern masonry tools for this. Cutting and finishing should be rather quick; I expect a somewhat roughened surface to help with friction between stones.
Rock movement:
I expect a lot of use of cranes. Once the rock gets dislodged, it will likely have eye-bolts installed into it to help move it around with a crane. From there, cranes well likely move it on to and off of all trucks. There may be barges as well if the trucking costs are too high. On the site, there will be a lot of temporary roads for trucks to drive on, making it easy to bring the stones up to the final crane.
I expect the project to take at least two years from securing funding, probably more like three. The design is easy. The main issues are mobilization, funding, and logistics.