The bulk density is illustrated by the image below.

To compute for bulk density, four essential parameters are needed and these parameters are **Dried Weight (W), Density of Water (ρ _{w}), Soaked Weight (W)** and

**Suspended Weight (S).**

The formula for calculating bulk density:

BD = ^{Dρw}/_{W – S}

Where:

BD = Bulk Density

D = Dried Weight

ρ_{w} = Density of Water

W = Soaked Weight

S = Suspended Weight

Let’s solve an example;

Find the bulk density when the dried weight is 6, the density of water is 10, the soaked weight is 14 and the suspended weight is 9.

This implies that;

D = Dried Weight = 6

ρ_{w} = Density of Water = 10

W = Soaked Weight = 14

S = Suspended Weight = 9

BD = ^{Dρw}/_{W – S}

BD = ^{(6)(10)}/_{(14 – 9)}

BD = ^{(60)}/_{(5)}

BD = 12

Therefore, the **bulk density **is **12g/cm³.**

**Calculating the Dried Weight when the Bulk Density, the Density of Water, the Soaked Weight and the Suspended Weight is Given.**

D = ^{BD(W – S)} / _{ρw}

Where:

D = Dried Weight

BD = Bulk Density

ρ_{w} = Density of Water

W = Soaked Weight

S = Suspended Weight

Let’s solve an example;

Find the dried weight when the bulk density is 10, the density of water is 4, the soaked weight is 8 and the suspended weight is 5.

This implies that;

BD = Bulk Density = 10

ρ_{w} = Density of Water = 4

W = Soaked Weight = 8

S = Suspended Weight = 5

D = ^{BD(W – S)} / _{ρw}

D = ^{10(8 – 5)} / _{4}

D = ^{10(3)} / _{4}

D = ^{30} / _{4}

D = 7.5

Therefore, the **dried weight **is **7.5g.**

**Calculating the Density of Water when the Bulk Density, the Dried Weight, the Soaked Weight and the Suspended Weight is Given.**

ρ_{w} = ^{BD(W – S)} / _{D}

Where:

ρ_{w} = Density of Water

BD = Bulk Density

D = Dried Weight

W = Soaked Weight

S = Suspended Weight

Let’s solve an example;

Find the density of water when the bulk density is 14, the dried weight is 10, the soaked weight is 16 and the suspended weight is 12.

This implies that;

BD = Bulk Density = 14

D = Dried Weight = 10

W = Soaked Weight = 16

S = Suspended Weight = 12

ρ_{w} = ^{BD(W – S)} / _{D}

ρ_{w} = ^{14(16 – 12)} / _{10}

ρ_{w} = ^{14(4)} / _{10}

ρ_{w} = ^{56} / _{10}

ρ_{w} = 5.6

Therefore, the **density of water **is **5.6 cm.**

**Calculating the Soaked Weight when the Bulk Density, the Dried Weight, the Density of Water and the Suspended Weight is Given.**

W = ^{Dρw} / _{BD} + S

Where:

W = Soaked Weight

BD = Bulk Density

D = Dried Weight

ρ_{w} = Density of Water

S = Suspended Weight

Given an example;

Find the soaked weight when the bulk density is 20, the dried weight is 15, the density of water is 8 and the suspended weight is 2.

This implies that;

BD = Bulk Density = 20

D = Dried Weight = 15

ρ_{w} = Density of Water = 8

S = Suspended Weight = 2

W = ^{Dρw} / _{BD} + S

W = ^{15(8)} / _{20} + 2

W = ^{120} / _{20} + 2

W = 6 + 2

W = 8

Therefore, the **soaked weight **is **8.**

**Calculating the Suspended Weight when the Bulk Density, the Dried Weight, the Density of Water and the Soaked Weight is Given.**

S = W – ^{Dρw} / _{BD}

Where:

S = Suspended Weight

BD = Bulk Density

D = Dried Weight

ρ_{w} = Density of Water

W = Soaked Weight

Let’s solve an example;

Find the suspended weight when the bulk density is 12, the dried weight is 11, the density of water is 7 and the soaked weight is 3.

This implies that;

BD = Bulk Density = 12

D = Dried Weight = 11

ρ_{w} = Density of Water = 7

W = Soaked Weight = 3

S = W – ^{Dρw} / _{BD}

S = 3 – ^{11(7)} / _{12}

S = 3 – ^{77} / _{12}

S = 3 – 6.41

S = – 3.41

Therefore, the **suspended weight **is **– 3.41.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the bulk density.

To get the answer and workings of the bulk density using the **Nickzom Calculator – The Calculator Encyclopedia. **First, you need to obtain the app.

You can get this app via any of these means:

**Web** – https://www.nickzom.org/calculator-plus

To get access to the **professional **version via web, you need to **register** and **subscribe **to have utter access to all functionalities.

You can also try the **demo **version via https://www.nickzom.org/calculator

**Android (Paid)** – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

**Android (Free)** – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

**Apple (Paid)** – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have obtained the calculator encyclopedia app, proceed to the **Calculator Map, **then click on **Materials and Metallurgical **under **Engineering****.**

Now, Click on **Refractories**** **under **Materials and Metallurgical**

Now, Click on **Bulk Density** under **Refractories**

The screenshot below displays the page or activity to enter your values, to get the answer for the bulk density according to the respective parameter which is the **Dried Weight (W), Density of Water (ρ _{w}), Soaked Weight (W)** and

**Suspended Weight (S).**

Now, enter the values appropriately and accordingly for the parameters as required by the **Dried Weight (W)** is **6**,** Density of Water (ρ _{w})** is

**10**,

**Soaked Weight (W)**is

**14**and

**Suspended Weight (S)**is

**9**.

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the bulk density and presents the formula, workings and steps too.