The image above represents pouring speed.

To compute for poring speed, three essential parameters are needed and these parameters are **Co-efficient for friction (μ), Acceleration due to Gravity (g) **and **Rated head static (H _{s}).**

The formula for calculating pouring speed:

v = μ√(2gH_{s})

Where:

v = Pouring Speed

μ = Co-efficient for Friction

g = Acceleration due to Gravity

H_{s} = Rated Static Head

Let’s solve an example;

Find the pouring speed when the co-efficient for friction is 14, acceleration due to gravity is 9 and rated static head is 16.

This implies that;

μ = Co-efficient for Friction = 14

g = Acceleration due to Gravity = 9

H_{s} = Rated Static Head = 16

v = μ√(2gH_{s})

v = 14 x √(2 x 9 x 16)

v = 14 x √(288)

v = 14 x 16.97

v = **237.58**

Therefore, the **pouring speed **is **237.58 m/s.**

**Calculating the Co-efficient for Friction when the Pouring Speed, the Acceleration due to Gravity and the Rated Static Head is Given.**

μ = ^{v} / _{√(2gHs)}

Where;

μ = Co-efficient for Friction

v = Pouring Speed

g = Acceleration due to Gravity

H_{s} = Rated Static Head

Let’s solve an example;

Find the co-efficient for friction when the pouring speed is 24, the acceleration due to gravity is 9 and the rated static head is 11.

This implies that;

v = Pouring Speed = 24

g = Acceleration due to Gravity = 9

H_{s} = Rated Static Head = 11

μ = ^{v} / _{√(2gHs)}

μ = ^{24} / _{√(2 x 9 x 11)}

μ = ^{24} / _{√198}

μ = ^{24} / _{14.07}

μ = 1.70

Therefore, the **co-efficient for friction **is **1.70.**

**Calculating the Acceleration due to Gravity when the Pouring Speed, the Co-efficient for Friction and the Rated Static Head is Given.**

g = ^{(v / μ)2} / _{2Hs}

Where;

g = Acceleration due to Gravity

v = Pouring Speed

μ = Co-efficient for Friction

H_{s} = Rated Static Head

Let’s solve an example;

Find the acceleration due to gravity when the pouring speed is 22, the co-efficient for friction is 10 and the rated static head is 14.

This implies that;

v = Pouring Speed = 22

μ = Co-efficient for Friction = 10

H_{s} = Rated Static Head = 14

g = ^{(v / μ)2} / _{2Hs}

g = ^{(22 / 10)2} / _{2 x 14}

g = ^{(2.2)2} / _{28}

g = ^{4.84} / _{28}

g = 0.172

Therefore, the **acceleration due to gravity **is **0.172.**

**Calculating the Rated Static Head when the Pouring Speed, the Co-efficient for Friction and the Acceleration due to Gravity is Given.**

H_{s} = ^{(v / μ)2} / _{2g}

Where;

H_{s} = Rated Static Head

v = Pouring Speed

μ = Co-efficient for Friction

g = Acceleration due to Gravity

Let’s solve an example;

Find the rated static head when the pouring speed is 30, the co-efficient for friction is 10 and the acceleration due to gravity is 8.

This implies that;

v = Pouring Speed = 30

μ = Co-efficient for Friction = 10

g = Acceleration due to Gravity = 8

H_{s} = ^{(v / μ)2} / _{2g}

H_{s} = ^{(30 / 10)2} / _{2 x 8}

H_{s} = ^{(3)2} / _{16}

H_{s} = ^{9} / _{16}

H_{s} = 0.56

Therefore, the **rated static head **is **0.56.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the pouring speed.

To get the answer and workings of the pouring speed 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 **for** NGN 1,500 **per** annum** 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 & Metallurgical**** **under **Engineering****.**

Now, Click on **Foundry Technology**** **under **Material & Metallurgical**

Now, Click on **Design of Gating**** System **under **Foundry Technology**

Now, Click on **Pouring Speed**** **under **Design of Gating System**

The screenshot below displays the page or activity to enter your values, to get the answer for the pouring speed according to the respective parameters which are the **Co-efficient for friction (μ), Acceleration due to Gravity (g) **and **Rated head static (H _{s}).**

Now, enter the values appropriately and accordingly for the parameters as required by the **Co-efficient for friction (μ)** is **14**,** Acceleration due to Gravity (g) **is **9 **and **Rated head static (H _{s})** is

**16**.

Finally, Click on Calculate

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