How can you build efficient Urban communities, homes, and businesses?

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Insulated Concrete Forms

These "blocks" snap together easily for quick building: https://www.youtube.com/watch?v=ez-M8wHX4Wk

 

They really had to struggle to get that one window in. 🙂

They say 13 man-days, but they didn't get to the concrete pour, so we could see how they fill under the windows. And I'm worried they top them with engineered roofing trusses. I [s]hate[/s] barely tolerate engineered roofing trusses.

I worked for Oregon Dome in the 1980s. We went from a flat slab to closed-to-weather in 2 days. Done in 30.

Unless the cost is wildly out of range, ICF seems like a no-brainer.  I like the fire retardant feature.