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> Actually, once the blocks are manufactured, you can ship them anywhere.

But you won't want to, because they're insanely heavy. At 35 tons a semi-trailer can only carry one.

You really need to build these on-site. The amount of diesel you'd burn to move them long distance is astronomical.

If you build it on site won't you still have to haul in all of the materials to produce it which will weigh more than the final product?

The point is that they would be made locally, not "shipped anywhere". Every city has a bunch of local concrete plants for a reason. If I buy aggregate, it's coming from nearby; it's not being shipped across the country.

Not necessarily. concrete = cement + aggregate; the aggregate might be quarried on site.

You have to haul the materials to make cement in from somewhere though anyways, right?

I know nothing about the cement business, so it's hard to have even a clue how to estimate this, even if you consider the power to be ~free..

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