The image above represents hydrostatic pressure of a dam.

To compute for hydrostatic pressure of a dam, two essential parameters are needed and these parameters are **Specific Weight of Water (γ) and Depth of water (h).**

The formula for calculating hydrostatic pressure of a dam:

H_{n} = ^{γh²} / _{2}

Where:

H_{n} = Hydrostatic Pressure of a Dam

γ = Specific Weight of Water

h = Depth of Water

Let’s solve an example;

Find the hydrostatic pressure of a dam when the specific weight of water is 10 and the depth of water is 5.

This implies that;

γ = Specific Weight of Water = 10

h = Depth of Water = 5

H_{n} = ^{γh²} / _{2}

H_{n} = ^{(10)(5)²} / _{2}

H_{n} = ^{10(25)} / _{2}

H_{n} = ^{250} / _{2}

H_{n} = 125

Therefore, the **hydrostatic pressure of the dam** is **125**.

**Calculating the Specific Weight of Water when the Hydrostatic Pressure of the Dam and the Depth of Water is Given.**

γ = ^{Hn x 2} / _{h2}

Where;

γ = Specific Weight of Water

H_{n} = Hydrostatic Pressure of a Dam

h = Depth of Water

Let’s solve an example;

Find the specific weight of water when the hydrostatic pressure of a dam is 30 and the depth of water is 6.

This implies that;

H_{n} = Hydrostatic Pressure of a Dam = 30

h = Depth of Water = 6

γ = ^{Hn x 2} / _{h2}

γ = ^{30 x 2} / _{62}

γ = ^{60} / _{36}

γ = 1.667

Therefore, the **specific weight of water **is** 1.667.**

Continue reading How to Calculate and Solve for Hydrostatic Pressure of a Dam | Water Budget