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Is anyone living in a passive solar home? Or is an architect?
Blanka:
--- Quote from: protokatie on January 31, 2010, 03:12:35 am ---Eventually of course, rust wins out. The rust expands, the concrete cracks, the Hoover Dam bursts...
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That's why we design concrete shapes with a minimum of concrete coverage. With good cement and good coverage, the steel stays nice for hundreds of years.
Fun experiment: take a bar of reenforcement steel that is rusted, and dip it in fresh cement for a while. Then rinse of the concrete. Nice blank steel again!
danny_galaga:
--- Quote from: pinballjim on January 31, 2010, 10:31:50 am ---Well, I've seen 300 year old cement buildings that are still in use today, and 30 year old cement buildings exploding. The only difference is the rebar inside the cement.
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A good earthquake will sort those pre- reinforced concrete buildings right out ;)
spystyle:
Hey I just found a free book online about passive solar homes, it looks pretty cool :)
Pics :
http://www.builditsolar.com/Projects/SolarHomes/PasSolEnergyBk/PhotoSection.htm
Book :
http://www.builditsolar.com/Projects/SolarHomes/PasSolEnergyBk/PSEbook.htm
I really dig this one :
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