ATMOSPHERE IN ISLAND ONE

"Arthur P. Smith" wrote: In any case, the pressure at 8000 ft is typically about 74% of
sea level, ie. about 0.74 bar. Oxygen partial pressure is only about 0.15
bar. At 11000 ft the pressure is down to only 0.65 bar. As was
already mentioned here, at 18,000 ft air pressure is half that at sea level,
and generally drops exponentially (except for weather/temperature effects)
at higher altitudes.
Good info Arthur. In this discussion we should remember that one of the side activities of a habitat may be to provide long term care / studies on the affects of reduce gravity for some medical conditions. Setting living conditions so that only extremely healthy people from high altitude locations can tolerate it, may be counter productive. In any case, a long term resident population is going to have a distribution of people with medical conditions. Once we are past the construction shack stage, the norm may need to be error on the side of higher pressure. I would pick a pressure no lower than Denver's. I had a daughter, who is extremely healthily, pass out while we were eating lunch near Steamboat Springs. The staff treated it as a common occurrence. I don't think that we want people passing out while performing critical activities.
Mitchell James
www.InnerTransit.org (Homebase for collaborative engineering)