Nice game! Finished in 16mins 5 secs (biggest size), but with almost no clicking. I started clicking the left side of the pile of bricks, to bring them closer, but then realized there are more bricks than neccessary. I would like to request an even bigger size!
As suggestion, since it's linear, the ramp could elevate the moment all workers required to finish the current floor have already went up the ramp. This would shorten the waiting time.
Fun fact: Pyramid construction and public works where used as a mean to keep the populace (mostly farmers) occupied from the idle months of the Nile River flood. They had almost no slaves.