Maine Journeyman Oil Fuel Board Rules Practice Test

To determine how many PSI (pounds per square inch) are required to push water 2.3 feet up a pipe, you can use the hydrostatic pressure formula, which states that 0.433 PSI is required to lift water 1 foot. Therefore, to calculate the pressure needed to lift water 2.3 feet, you would multiply 2.3 feet by 0.433 PSI per foot.

So, the calculation would be:

2.3 feet × 0.433 PSI/foot = 0.9939 PSI

Rounding this value, you find that the pressure required is approximately 1 PSI. This makes the first choice the correct answer, as it aligns with the calculated pressure needed to lift the water the specified height.

In this context, higher pressure options would exceed what is necessary for just 2.3 feet, illustrating why they are not appropriate answers.