# How to calculate Quantity of Cement, Sand, Aggregate & Water in M15 concrete?

In order to calculate the required quantity of Cement, Sand, Coarse Aggregates and water for M15 grade of concrete we have to follow 6 simple steps.

#### 1. Assumptions

Volume of concrete = 1 m³

#### 2. Find-out the Quantity of concrete (Wet volume & Dry volume)

Wet volume of concrete = 1 m³

Here, wet volume is nothing but Volume of the concrete after mixing with water.

∵ Dry volume = Wet volume x 1.54 (You can also take it as 1.50 to 1.55, But it became standard practice to considering 1.54 as multiplication factor).

what is 1.54 in concrete?

Dry volume of concrete = 1 x 1.54 =1.54 m³

#### 3. Find-out quantity of Cement

∵ Quantity of cement = (Dry volume of concrete x cement ratio)/(sum of the ratio)

Cement = (1.54 x 1)/(1+2+4)=0.22 m³

∵ Density of Cement = 1440 kg/m³

Weight of Cement = 1440 x 0.22 = 316.8 Kg

∵ 1 bag of cement contains 50 kg of cement

Number of bags = 316.8 Kg/50 kg = 6.336 No’s

#### 4. Find-out quantity of Sand

∵ Cement : Sand :: 1:2

Quantity of sand =Quantity of cement x 2

∴ Quantity of Sand = 0.22 x 2 = 0.44

∵ 1m³=35.3147 Cubic Feet (CFT)

Quantity of sand = 0.44 x 35.3147 = 15.538 CFT

∵ Weight of sand = volume x density, Density of Sand = 1600 kg/m^3

∴ Weight of sand= 0.44 x 1600 = 704 kg (0.704 tonnes)

#### <br /> 5. Find-out quantity of Coarse Aggregates

∵ Cement : Coarse Aggregates :: 1:4

Quantity of Coarse Aggregates =Quantity of cement x 4

∴ Quantity of Coarse Aggregates = 0.22 x 4 = 0.88

∵ 1m³=35.3147 Cubic Feet (CFT)

Quantity of Coarse Aggregates = 0.88 x 35.3147 = 31.077 CFT

∵ Weight of Coarse Aggregates = volume x density, Density of Coarse Aggregates = 1520 kg/m^3

∴ Weight of Coarse Aggregates = 0.88 x 1520 =  1337.6 kg (1.337 tonnes)

#### 6.Find-out quantity of water

Assume water cement ratio as 0.50

Quantity of water =  316.8 x 0.50 = 158.4 Liters

Watch the video in the below link for better understanding and detailed explanation.

HOW TO CALCULATE CEMENT, SAND AND AGGREGATE QUANTITY IN CONCRETE