Hello Engineers, Today we will Calculate Cement and Sand Quantity for plastering work. Before calculation, We should be know some values that’s given bellow :-

**Note:- Point Should Be Know, Before Estimating** **Mortar Calculation for Plastering work**

Density of Cement | 1440 kg/m^{3} |

Density of Sand | 1450-1550 kg/m^{3} |

How many kg in 1 bag of cement | 50kg |

Volume of one cement bag in litres | 34.4722 litres |

One Bag of cement in cubic metres | 0.0347 cubic meter |

How many Cubic Feet (CFT) | 1.226 CFT |

Numbers of Bags in one cubic metre cement | 29 bags approx. |

Specific gravity of cement | 3.5 |

Grade of cement | 33, 43, 53 |

We take a wall that’s

Area of brick wall for plaster = 3m x 3m = 9m^{2}

Thickness of Plaster = 12mm (Inner Plaster) = 0.012m

Volume of mortar = 9m^{2} x 0.012m = 0.108m^{3}

Ratio for Plaster = 1:6

Sum of ratio = 7

## Cement Calculation of mortar

Volume ( Dry Volume of Mortar ) = 0.108 x 1.35 = 0.1458 m^{3}

Cement = cement part / sum of ratio x Cement Volume ( Dry Volume of Mortar )

Cement= (1/7) x 0.1458 = 0.0208 m^{3}

Cement = 0.0208 x 1440 **(Density of Cement is 1440/m3)**

**Cement = 29.99 kg**

A wall that dimensions 3mtr x 3mtr and 12 mm thickness of plaster require 29.99 kg cement.

If you want know quantity in bags, Than we know in one bag quantity is 50 kg

(29.99/50) = **0.599 Bags**

## Sand Calculation of mortar

Volume of Sand = (6/7) x 0.1458

Volume of Sand= 0.124m^{3}

Sand = 0.0208 x 1450 **(Density of Sand is 1450/m3)**

Sand = 181.2 kg

A wall that dimensions 3mtr x 3mtr and 12 mm thickness of plaster require 181.2 kg sand.

**Important Point :-** The value of various materials like cement, sand, aggregates can be different, but its will a minor difference because density can be change according to zones of all over world. But standard formulas explained in this article.

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