Old Hawkeye
50 Cal.
- Joined
- Mar 14, 2020
- Messages
- 1,095
- Reaction score
- 1,995
If the area of the base plug is 10 sq. inches(3-1/2" dia.) & you only put 10 psi of air pressure in it, there is a force of 100 pounds pushing on that plug!!!!!! Back in the 1990's when the gov't changed the rules on underground fuel storage tanks I was involved in over 1000 removals & replacements. Had to take a class to be certified to do this work. They showed a video of a steel tank 10' in diameter & 3/8" thick blow the end completed out with only 10 psi air. 10 psi on only one sq. ft. is 1440 lbs. of force!!!! Compressed air is dangerous stuff. It only takes a couple psi to check for leaks. Thank goodness a chipped tooth was the only casualty.