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i make a pyramid the way mason says to do it in GTAOT, stacks are always exactly 20 chips, no more, no less, dont stack stacks on top of stacks, start with 3 in a little pyramid, then just keep adding on to the side until you get a bigger pyramid

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At one point, you are going to have to build up instead of out, because there's limited real-estate at ground level. This is why skyscrapers are so popular in big cities.

So, at what point do you add stories to your structure? I would think that at 15 stacks, you would have to build up, or break the pyramid pattern. Possibly 10.