The image above represents total cross-sectional area of gates.

To compute for total cross-sectional area of gates, three essential parameters are needed and these parameters are **Mass of the Casting (G), Specific Speed of Pouring (K _{s})** and

**Time of Pouring (t).**

The formula for calculating total cross-sectional area of gates:

F_{s} = ^{G} / _{tKs}

Where:

F_{s} = Total Cross-Sectional Area of Gates

G = Mass of the Casting

K_{s} = Specific Speed Of Pouring

t = Time of Pouring

Let’s solve an example;

Find the total cross-sectional area of gates when the mass of the casting is 10, specific speed of pouring is 18 and the time of pouring is 9.

This implies that;

G = Mass of the Casting = 10

K_{s} = Specific Speed Of Pouring = 18

t = Time of Pouring = 9

F_{s} = ^{G} / _{tKs
}F_{s} = ^{10} / _{9 x 18}

F_{s} = ^{10} / _{162}

F_{s} = **0.0617**

Therefore, the **total cross-sectional area of gates **is **0.0617 m ^{2}.**

**Calculating the Mass of the Casting when the Total Cross-Sectional Area of Gates, Specific Speed of Pouring and the Time of Pouring is Given.**

G = F_{s} x tK_{s}

Where:

G = Mass of the Casting

F_{s} = Total Cross-Sectional Area of Gates

K_{s} = Specific Speed Of Pouring

t = Time of Pouring

Let’s solve an example;

Find the mass of the casting when the total cross-sectional area of gates is 15, the specific speed of pouring is 7 and the time of pouring is 5.

This implies that;

F_{s} = Total Cross-Sectional Area of Gates = 15

K_{s} = Specific Speed Of Pouring = 7

t = Time of Pouring = 5

G = F_{s} x tK_{s}

G = 15 x 5(7)

G = 15 x 35

G = 525

Therefore, the **mass of the casting **is **525 m.**

**Calculating the Specific Speed of Pouring when the Total Cross-Sectional Area of Gates, Mass of the Casting and the Time of Pouring is Given.**

K_{s} = ^{G} / _{Fs x t}

Where;

K_{s} = Specific Speed Of Pouring

F_{s} = Total Cross-Sectional Area of Gates

G = Mass of the Casting

t = Time of Pouring

Let’s solve an example;

Find the specific speed of pouring when the total cross-sectional area of gates is 20, the mass of the casting is 18 and the time of pouring is 10.

This implies that;

F_{s} = Total Cross-Sectional Area of Gates = 20

G = Mass of the Casting = 18

t = Time of Pouring = 10

K_{s} = ^{G} / _{Fs x t}

K_{s} = ^{18} / _{20 x 10}

K_{s} = ^{18} / _{200}

K_{s} = 0.09

Therefore, the **specific speed of pouring **is **0.09.**

**Calculating the Time of Pouring when the Total Cross-Sectional Area of Gates, the Mass of the Casting and the Specific Speed of Pouring is Given.**

t = ^{G} / _{Fs x Ks}

Where;

t = Time of Pouring

F_{s} = Total Cross-Sectional Area of Gates

G = Mass of the Casting

K_{s} = Specific Speed Of Pouring

Let’s solve an example;

Find the time of pouring when the total cross-sectional area of gates is 32, the mass of the casting is 22 and the specific speed of pouring is 14.

This implies that;

F_{s} = Total Cross-Sectional Area of Gates = 32

G = Mass of the Casting = 22

K_{s} = Specific Speed Of Pouring = 14

t = ^{G} / _{Fs x Ks}

t = ^{22} / _{32 x 14}

t = ^{22} / _{448}

t = 0.049

Therefore, the **time of pouring **is **0.049.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the total cross-sectional area of gates.

To get the answer and workings of the total cross-sectional area of gates 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**** u**nder **Material & Metallurgical**

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

Now, Click on **Total Cross-Sectional Area of Gates**** **under **Design of Gating System**

The screenshot below displays the page or activity to enter your values, to get the answer for the total cross-sectional area of gates according to the respective parameters which are the **Mass of the Casting (G), Specific Speed of Pouring (K _{s})** and

**Time of Pouring (t).**

Now, enter the values appropriately and accordingly for the parameters as required by the **Mass of the Casting (G) **is **10**,** Specific Speed of Pouring (K _{s}) **is

**18**and

**Time of Pouring (t)**is

**9**.

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the total cross-sectional area of gates and presents the formula, workings and steps too.