# Calculate the Blocks Required for a Wall

Hi there, folks! Today, we will see how we can find out the number of blocks required to build a wall. Calculating the number of blocks, like bricks of some kind, can be a little tricky, despite seeming simple. So, please follow this guide carefully.

**Number Of Concrete Blocks In A Wall**: There are a few strategies for figuring the number of blocks in a wall. In this article, I will disclose two straightforward strategies to discover absolute no. of blocks for a wall.

1. Surface area strategy.

2. Volume strategy.

**Surface Area Strategy**: Data you need

1. Surface area of the wall.

2. Surface area of a standard solid block.

3. Surface area of openings in the wall.

**Step 1**

Decide The Length and Height Of The Wall:

Let, the Length of the wall = 10 feet.

The height of the wall = 10 feet.

**Step 2**

Compute The Surface Area Of The Wall:

We know, Surface Area = Length x Height

∴ Surface area of the wall = 10 x 10 = 100 sq. feet.

**Step 3**

Compute The Surface Area Of Openings:

On the off chance that the wall has any openings, for example, entryway, windows and so forth, figure the surface area of openings.

Let the wall has a window of 3′ x 3′

∴ Surface area of the window = 3 x 3 =9 sq. ft

**Step 4**

Subtract The Surface Area Of Openings From Surface Area Of Walls:

∴ Final Surface Area of wall = 100 – 9 = 91 sq.ft.

**Step 5**

Figure The Surface Area Of A Concrete Block With Mortar Allowance:

Let the block is 16″ x 8″ x 8″ and mortar stipend is 1″

∴ Surface Area of one block with mortar = (16+1) x (8+1)= 153 inch²

= 153/12×12 = 1.0625 sq.ft

**Volume Strategy**: Data you need

1. Volume of the wall.

2. Volume of a standard solid block.

3. Volume of openings in the wall.

**Step 1**

Decide The Width, Height, And breadth Of The Wall:

Let, the width of the wall = 10 feet.

The height of the wall = 10 feet.

The breadth of the wall = 8″ = 0.67 feet.

(breadth of wall will be same as the breadth of one cement block)

**Step 2**

Figure The Volume Of The Wall:

We know, Volume = Width x Height x Breadth

∴ Volume of the wall = 10 x 10 x 0.67 = 67 cubic feet.

**Step 3**

Figure The Volume Of Openings:

In the event that the wall has any openings, for example, entryway, windows and so on, figure the volume of openings

Let the wall has a window of 3′ x 3′ x 0.67′

(breadth of the window will be same as the breadth of the wall)

∴ Volume of the window = 3 x 3 x 0.67 =6 cu. Ft

**Step 4**

Take away The Volume Of Openings From Volume Of Walls:

∴ Final volume of wall = 67 – 6 = 61 cu.ft.

**Step 5**

Compute The Volume Of A Concrete Block With Mortar Allowance:

Let the block is 16″ x 8″ x 8″ and mortar stipend is 1″

∴ Volume of one block with mortar = (16+1) x (8+1) x 8 = 1224 inch3

(The mortal will be given on the upper side and one side of each solid block)

= 1224/12x12x12 = 0.70 cu.ft

**Step 6**

Gap The Total Volume Of The Wall By Volume Of One Block:

∴ Number of blocks = Volume of wall/Volume of a block = 61/0.70 = 86

(assuming that 5% the of solid blocks will be wasted)

So the all out numbers of blocks required = 86 + (86 x 5/100) = 86 + 4 = 90.

**Note**: On the off chance that the wall doesn't have any initial skip Step 4, and simply divide the surface area of the wall by the surface area of one block.