14.7 PSI at sea level and decreasing one PSI per 2343 feet of altitude would be 14.41660264618 PSI at 664 feet above sea level this also has to be adjusted for temp as well
A psi level above 20 is considered dangerous to the skin.
If it is fresh water, and the surface is at sea level, then the pressure at the surface is 14.69 psi. As you submerge, then the pressure from the weight of the water above you is added to the air pressure above the water. For each foot that you descend, the water pressure will increase by 0.4331 psi, so at 328 feet deep, the water pressure is 142.0568 psi. Add the 14.69 psi air pressure to get 156.7468 psi.
The pressure at a given height above ground can vary depending on several factors, including atmospheric conditions. However, at sea level, atmospheric pressure decreases by approximately 0.5 psi for every 1,000 feet of elevation. Therefore, at 24 inches (2 feet) above ground, the change in pressure is negligible, and it remains very close to the standard atmospheric pressure of about 14.7 psi.
15.78 psi
To calculate the static pressure at a depth of 25 feet with a psi of 80, we need to consider that 1 psi corresponds to approximately 2.31 feet of water. Therefore, the pressure in feet of water at 80 psi is 80 psi × 2.31 feet/psi = 184.8 feet. At a depth of 25 feet, the static pressure would be the sum of the atmospheric pressure (typically 14.7 psi at sea level) and the pressure from the water column. In this case, the static pressure at 25 feet is approximately 80 psi, assuming the measurement is taken at that depth.
At sea level, you have one atmosphere of pressure(14.7 psi). Every 33 ft that you descend adds another atmosphere of pressure. Therefore 3000 ft/33 ft=90.91 ATM. Now add the one atmosphere at the surface to get 91.91 ATM of pressure at 3000 ft depth. Also, 91.91 ATM times 14.7 psi per ATM of pressure equals 1,351 psi.
The water pressure of the ocean at 500 feet is approximately 217.5 pounds per square inch (psi). This pressure increases by 14.7 psi for every additional 33 feet in depth due to the weight of the water above.
At 8,000 feet altitude, atmospheric pressure is lower than at sea level. Standard atmospheric pressure at sea level is about 14.7 psi, and at 8,000 feet, it typically drops to approximately 11.2 psi. This reduction in pressure is due to the decrease in the density of air as elevation increases.
At 99 feet below the surface, the total pressure on a diver can be calculated using the formula: total pressure = atmospheric pressure + (depth in feet × 0.433 psi/ft). The atmospheric pressure at sea level is approximately 14.7 psi. Thus, the total pressure at 99 feet is about 14.7 psi + (99 ft × 0.433 psi/ft) = approximately 14.7 psi + 42.8 psi = 57.5 psi. Therefore, the total pressure on a diver at that depth is approximately 57.5 psi.
Standard atmospheric pressure at sea level is about 14.7 PSI. So, then what is the pressure at about 5,645 feet below the surface of the earth?
The pressure at 5400 feet underwater is approximately 2333 pounds per square inch (psi). At this depth, the water column above exerts a significant amount of pressure on any object or structure submerged at that depth.
The pressure is only dependent on the height of water above the measuring point. 1 psi corresponds to a height of 2.3 ft, so 8 ft = 3.5 psi The pressure is only dependent on the height of water above the measuring point. 1 psi corresponds to a height of 2.3 ft, so 8 ft = 3.5 psi