In this article, we explained
about thumb rule calculation for brickwork and bricks needed for Square meter –
Sq/m, before we are going to calculation we have to know the **size of the
brick** to proceed further

**SIZE OF THE BRICK**

Generally, four standard-sized bricks are used in India.

**Which
are,**

**Modular
Brick / Metric Bricks** – 190 x 90 x 90 mm or 7.48” x 3.54” x 3.54”
These are machine-made bricks

**Non-Modular
Bricks** – 230 mm x 110 mm x 70 mm or 9″ x 4.33″ x 2.75″

**Conventional
Bricks** – 230 x 110 x 110 mm or 9″ x 4.33″ x 4.33″

**English
Size Bricks** – 230 x 115 x 75 mm or 9″ x 4.5″ x 3″. (It is usually used in India.)

There are other dimensions depending on the country. The brick weight must not exceed 3 kg.

In this calculation, we will use the English Bricks size

**Let’s
start,**

**Thumb Rule for Brick Calculation Per Square Meter/Sqm**

**(OR)**

**How to calculate the number of Bricks per Square meter (m2)**

** **

**4″ brick wall or single layer or half brick**

Size → 230mmx110mmx75 mm
(0.230×0.110×0.075 m)

Thickness of mortar =
10 to15mm (0.01m)

By adding the thickness of
the mortar

Length of Bricks in meter
(L) = 230mm + 10mm **= 240mm - 0.240m**

Width of Bricks in
meter (W) = 110mm + 10mm **= 120mm - 0.110m**

Thickness of Bricks in meter
(T) =75 mm + 10mm **= 85mm - 0.085m**

** **

**Size of the brick with mortar** → 240mmx120mmx85 mm (0.240×0.120×0.085) mm

** **

**No. of bricks in 1sq.m ****= Area of brickwork/ Area of one brick with
mortar. **

**Or**

**No. of bricks in 1sq.m ****= Volume of brickwork/ Volume of one brick
with mortar.**

** **

Area of a brick = Length
of brick x Width of brick

Area of each Brick in
square meter = L x W **= 0.240 x 0.085** **= 0.0204
sqm**

** **

**Therefore,**

**No. of bricks in 1 sq.m = 1/0.0204 = 49.019 –
50nos**

** **

Consider the wastage
percentage as 10% of bricks we will add 5 nos with the total

** **

**No. of bricks in 1sq.m = 50 + 5 = 55nos/sqm**

** **

**Then,**

**No. of bricks with wastage per square meter =
55nos/m ^{2}**

** **

**Thus, thumb rule
formula: **

**How many bricks are in sqm?**

**No. of bricks in 4″ (half brick wall, single
brick) wall per m ^{2 }= (Area in sqm × 55).**

**9″
brick wall or double layer**

**No. of bricks with wastage per square meter for 4” wall= 55nos/m**^{2}

** **

**Therefore,**

**How many bricks are in 1sqm?**

**No. of bricks with wastage per square meter for 9” wall= 55nos/m**^{2 }**= **2 x 55 =** 110nos** (as the 9” twice the thickness of the 4” wall)

** **

**How to Use This Thumb
Rule?**

Let’s explain

Given data:

Size of the 4” brick
wall = 3x3m

Area of the brick wall
= 3x3 = 9sqm

No. of bricks in 4” wall
per m^{2 }= (Area in sqm × 55).

**Therefore,**

No. of bricks in 4″ wall
of 9m^{2 }= 9 x 55 = 495nos

Also read: Thumb rule - How many bricks are in 1m3?– LCETED

If you find

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**Thanks!** For reading the article...** **

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