In a message dated 3/10/2010 12:34:07 P.M. Pacific Standard Time,
ShellyDalg@aol.com writes:
Now let's get crazy......the pressure pushing down on a 24 inch
diameter hatch at 500 feet is.......
radius squared ( 12 X 12 ) times pi for the square inches ( 452 ), times
the psi ( 223 )............
100,831 pounds. Yikes !
Frank D.
I better not show this to my wife......She won't let me get in the damn
thing. !
Frank D.