# How to Calculate and Solve for Dry Unit Weight of Soil | Soil Mechanics and Foundation

The image above represents dry unit weight of soil. To calculate dry unit weight of soil, two essential parameters are needed and these parameters are Unit weight of soil (Î³)Â andÂ Moisture content (w).

The formula for calculating dry unit weight of soil:

Î³dÂ =Â Î³Â /Â 1 + w

Where:

Î³dÂ = Dry Unit Weight of Soil
Î³ = Unit Weight of Soil
w = Moisture Content

Let’s solve an example;
Find the dry unit weight of soil when the unit weight of soil is 12 and the moisture content is 6.

This implies that;

Î³ = Unit Weight of Soil = 12
w = Moisture Content = 6

Î³dÂ =Â Î³Â /Â 1 + w
That is, Î³dÂ =Â 12Â /Â 1 + 6
Î³dÂ =Â 12Â /Â 7
Î³d = 1.71

Therefore, theÂ dry unit weight of soilÂ isÂ 1.71.

### Calculating for the Unit Weight of Soil when the Dry Unit Weight of Soil and the Moisture Content are Given

Î³ = Î³d (1 + w)

Where;

Î³ = Unit Weight of Soil
Î³dÂ = Dry Unit Weight of Soil
w = Moisture Content

Let’s solve an example;
Find the unit weight of soil when the dry unit weight of soil is 22 and the moisture content is 12.

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This implies that;

Î³d = Dry Unit Weight of Soil = 22
w = Moisture Content = 12

Î³ = Î³d (1 + w)
Then, Î³ = 22 (1 + 12)
Î³ = 22 (13)
Î³ = 286

Therefore, theÂ unit weight of soilÂ isÂ 286.

### Calculating the Moisture Content when the Dry Unit Weight of Soil and the Unit Weight are Given

w = Î³ / Î³d – 1

Where;

w = Moisture Content
Î³dÂ = Dry Unit Weight of Soil
Î³ = Unit Weight of Soil

Let’s solve an example;
Find the moisture content when the dry unit weight of soil is 6 and the unit weight of soil is 24.

This implies that;

Î³d = Dry Unit Weight of Soil = 6
Î³ = Unit Weight of Soil = 24

w = Î³ / Î³d – 1
So, w = 24 / 6 – 1
w = 4 – 1
w = 3

Therefore, theÂ moisture contentÂ isÂ 3.

### How to Calculate Dry Unit Weight of Soil in Soil Mechanics and Foundation Using Nickzom Calculator

Nickzom Calculator â€“Â The Calculator Encyclopedia is capable of calculating the dry unit weight of soil.

To get the answer and workings of the dry unit weight of soil using the Nickzom Calculator â€“ The Calculator Encyclopedia.Â First, you need to obtain the app.

You can get this app via any of these means:

To get access to theÂ professionalÂ version via web, you need toÂ registerÂ andÂ subscribeÂ forÂ NGN 2,000Â perÂ annumÂ to have utter access to all functionalities.
You can also try theÂ demoÂ version viaÂ https://www.nickzom.org/calculator

Apple (Paid)Â â€“Â https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to theÂ Calculator Map,Â then click onÂ AgriculturalÂ underÂ Engineering.

Now, Click onÂ Soil Mechanics and FoundationÂ underÂ Agricultural

Now, Click on Dry Unit Weight of Soil underÂ Soil Mechanics and Foundation

The screenshot below displays the page or activity to enter your values, to get the answer for the dry unit weight of soil according to the respective parameters which is the Unit weight of soil (Î³)Â andÂ Moisture content (w).

Now, enter the values appropriately and accordingly for the parameters as required by the Unit weight of soil (Î³)Â is 12 andÂ Moisture content (w) is 6.

Finally, Click on Calculate

As you can see from the screenshot above,Â Nickzom Calculatorâ€“ The Calculator Encyclopedia solves for the dry unit weight of soil and presents the formula, workings and steps too.