How to Calculate Water Pressure & Pipe Size

- Height of the water column (h)

- Density of water (ρ)

- Acceleration due to gravity (g)

The formula for water pressure (P) is:

```

P = ρ * g * h

```

Where:

- P is the water pressure in pascals (Pa)

- ρ is the density of water in kilograms per cubic meter (kg/m³)

- g is the acceleration due to gravity in meters per second squared (m/s²)

- h is the height of the water column in meters (m)

For example, if the height of the water column is 10 meters, the density of water is 1000 kg/m³, and the acceleration due to gravity is 9.8 m/s², then the water pressure at the base of the column is:

```

P = 1000 kg/m³ * 9.8 m/s² * 10 m = 98,000 Pa

```

This means that the water pressure at the base of the column is approximately 98 kilopascals (kPa).