How To Calculate Cement, Sand, & Aggregate Quantity In 1 Cubic metre Concrete

Point Should Be Know Before Estimating Concrete Quantity 

Density of Cement       = 1440 kg/m3
Sand Density                  = 1450-1500 kg/m3
Density of Aggregate   = 1450-1550 kg/m3

How many KG in 1 bag of cement                                 = 50 kg
Cement quantity  in litres in 1 bag of cement          = 34.7 litres
1 Bag of cement in  cubic metres                                  = 0.0347 cubic meter
How many CFT (Cubic Feet)                                            = 1.226 CFT
Numbers of Bags in 1 cubic metre of cement               = 28.8 Bags

The specific gravity of cement   = 3.15
Grade of cement                      =  33, 43, 53
Where 33, 43, 53 compressive strength of cement in N/mm2

M-20 = 1 : 1.5 : 3  = 5.5, (Cement : Sand : Aggregate)
Some of Mix is – 5.5

Where, M   = Mix
20  = Characteristic Compressive strength

Consider volume of concrete = 1m3

Dry  Volume of Concrete = 1 x 1.54 = 1.54 m3    (For Dry Volume Multiply By 1.54)

Now we start calculation to find Cement, Sand and Aggregate quality in 1 cubic meter of concrete

• CALCULATION FOR CEMENT QUANTITY

Cement=  (1/5.5) x  1.54    = 0.28 m³   ∴ 1 is a part of cement, 5.5 is sum of ratio
Density of Cement is 1440/m³

  = 0.28  x 1440 = 403.2 kg 

We know each bag of cement is 50 kg
For Numbers of Bags =   403.2/50     = 8 Bags 

 We Know in one bag of cement = 1.226 CFT

 For Calculate in CFT (Cubic Feet) = 8  x 1.225      = 9.8 Cubic Feet

•   CALCULATION FOR SAND QUANTITY

Consider volume of concrete = 1m³

Dry  Volume of Concrete = 1 x 1.54 = 1.54 m³

 Sand=  (1.5/5.5) x 1.54    = 0.42 m³   ∴ 1.5 is a part of Sand, 5.5 is sum of ratio

Density of Sand is 1450/m³

For KG = 0.42 x 1450 = 609 kg

 As we know that 1m³ = 35.31 CFT

For Calculation in Cubic Feet   = 0.42 x 35.31 = 14.83 Cubic Feet

• CALCULATION FOR AGGREGATE QUANTITY

Consider volume of concrete = 1m³

Dry  Volume of Concrete = 1 x 1.54 = 1.54 m³

Aggregate =   (3/5.5) x 1.54 = 0.84 m³ ∴ 3 is a part of cement, 5.5 is sum of ratio

Density of Aggregate is 1500/m³  

Calculation for KG = 0.84 x 1500   = 1260 kg

As we know that 1 m3 = 35.31 CFT

Calculation for CFT  = 0.84 x 35.31 = 29.66 Cubic Feet

Also you can Download Excel Sheet for Calculate Concrete Volume (Cement, Sand and Aggregate ) Quantity. 

Excel Sheel For Concrete Quantity Calculation

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Now we start calculation for finding Cement, Sand  quality in mortar  for Plaster

Area of brick wall for plaster = 3m x 3m =9m²

Plaster Thickness = 12mm (Outer-20mm, Inner 12mm)

Volume of mortar = 9m²  0.012m            = 0.108m³
Ratio for Plaster Taken is                             = 1 : 6
Sum of ratio is                                                   = 7

Calculation for Cement Volume

Dry Volume of Mortar = 0.108  1.35 = 0.1458 m³

Cement= (1/7) = 0.0208 m³  

Density of Cement is 1440/m³

               = 0 1440              = 29.99 kg

               We know each bag of cement is 50 kg

               = (29.99/50)        = 0.599 Bags

Calculation for Sand Volume

Sand = (6/7) x 0.1458      = 0.124m³

Density of Sand is 1450/m³

               = 0 1450                = 181.2 kg

Now we find how many CFT (Cubic feet) Required

 As we know that 1m³ = 35.31 CFT

               = 0.124*35.31

               = 4.37 CFT (Cubic Feet)

Download Excel Sheet for plaster  calculator 

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