You can't say 'pressure per square inch. It's just 'pressure', which equals force per square inch. You divide the person's weight by the area of the foot in contact with the stairs to get the answer.
120 pounds
The air pressure inside a human body is roughly equivalent to the pressure of the atmosphere. Normal air pressure is about 13.7 pounds per square inch at sea level.
Human sneeze has very high pressure in sneeze. Probably it should go in hundreds of pounds per square inch.
Some dogs can exert more than 500 pounds per square inch of jaw pressure, which is beyond the ability of any human.
780 psi per square cm
500
It takes 15 psi (pounds per square inch) to break both, human neck and skull.
Stairs, Bathrooms and getting out of cars.
The weight of the atmosphere (which is about 14.5038 pounds per square inch) does not put any pressure on the human spine (the spine is not directly supporting this load form the top of you head to the ground - the pressure is all round you).
The jaw pressure of a African lion bite is rated at about 600 pounds per square inch. By comparison, a human bite is about 120 pounds per square inch.A Lions bite force is approximately 700 lbs
The atmospheric pressure at sea level is 14.7 pounds per square inch (14.7 psi)
1,000 lbs of pressure per square inch. That's compared to 120 for a human, 320 for large dogs such as German Shepherds, 600 for a lion, and 2,500 for a crocodile.