Not very much. I have heard 3 pounds, but have no proof of that assertion. I know at least 2 people who broke their own ribs by coughing.
8 psi
I heard it only takes 15 pounds of pressure (was told this from a 26 time World Champion Armwrestler).
75 pounds of succinct concentrated opposing downward pressure will break almost any human bone
You probably have too twist and do alot of stuff to it, but, it will get swollen up.
It takes about 8 pounds of pressure to break the human jaw
According to Universal Grappling Arts, it takes about 4 1/2 pounds of pressure to break the tarsals of the upper foot. You want to stomp down with your heel as high up on the laces as possible.
I heard it only takes 15 pounds of pressure (was told this from a 26 time World Champion Armwrestler).
It would only take about 30 pounds of pressure per square inch to break a human neck. At 25 pounds of pressure, it causes instant unconsciousness.
Since it would probably be tempered glass, 100lbs. of pressure.
The amount of pressure that it takes to break an arm depends on the strength of the arm and the angle in which the pressure is applied. On the average, it takes 120 pounds of pressure.
75 pounds of succinct concentrated opposing downward pressure will break almost any human bone
Depends. It can take up to 250 pounds of pressure I think.
It takes about 7 pounds of pressure to break an elbow according to the UFC
You probably have too twist and do alot of stuff to it, but, it will get swollen up.
Bout 20 pounds of steel bar
depends on the kind of tile & the thickness & obviously the test method Ceramic or Saltillo will break much easier than Porcelain need more info
It takes about 8 pounds of pressure to break the human jaw
Normally it takes 80.000 pounds of prrssure