The steel arrived on a truck and is craned into place. It is bolted and welded together just like a commercial building. When used in a residential application, it allows great design flexibility. You can do things that are difficult with wood: totally open floor plans, large windows in corners. Plus, any to-do lists can get posted with magnets!
The exterior will be made with insulated wall panels. The 3" walls are a R-24, the 4" roof is an R-30. Once we fill the cavities, we expect to have R-70 and R-45 respectively. What is this R stuff anyhow? The R-value is a measure of thermal resistance used in the building and construction industry. The bigger the number, the better the building insulation's effectiveness.
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