GREETINGS FROM A NEW MENBER & IDEAS FOR THE ATMOSPHERE IN ISLAND ON

I thought that air pressure exponentially decayed, with a "half-life" of
18,000 feet. If this is true, then the implication would be 0.65 bar at
11,000 feet

altitude(feet) bar
0 1
8,000 0.73
9,000 0.71
10,000 0.68
11,000 0.65
18,000 0.5
36,000 0.25
54,000 0.125
72,000 0.0625
90,000 0.03125
108,000 0.015625
etc.

If this is wrong, then what are the correct numbers?

Ron Menich

Charles Radley
ssi_list@...
07/27/01 09:40 THE AT MOSPHERE IN ISLAND ONE
AM
Please respond
to ssi_list

>
> Some interesting info from
> http://www.infoplease.com/askeds/9-16-99askeds.html. We should be able
> to feel safe designing for an equivalent pressure to 11,000 feet above
sea
> level, because lots of people already live at such altitudes (e.g., La
> Paz):
>
> "
>

The pressure is about the same as sea level. It is also about the same
as commercial aircraft cabin pressure. i.e. 0.95 bar or thereabouts.
This will not result in a signifcant cost/mass versus a 1.0 bar habitat.