In this article today I will discuss about how we can find out the quantity of cement , sand and aggregate method. because we have different object and those objects have different shapes therefore the volume must change from each other. so after this reading you will be able to find out the volume of different object and also the quantity of concrete for different shapes.
Out Volume of Different shapes
we know that if we want to find out the quantity of concrete so that concrete we can find out with help of object volume. so there we need to find out the volume of any shapes in which we have to find out the quantity of concrete or (Concrete volume)
Method to find out volume of Box
we can get the volume of any object from 3 dimensions Like L (Length) x B (Breadth) x H ( Height) so there 3 dimension can give us the volume of any object or shapes.
Method to find out volume Cylinder
In cylinder shapes we can find out the volume very easy , first of all we have to measure the Diameter of cylinder (D) and than Height of cylinder (H) Now, from Diameter of cylinder we can find out area of cylinder from top . we use this formula for cylinder area A = pi D 2/4 = ?
Now to find volume of cylinder = V = A x H , here V = volume , A = area of cylinder , H = height of cylinder.
To find out Quantity of Concrete ( Cement , Sand and Aggregate )
We have different Grade of Concrete and different Grade of concrete has different ratio for Cement , sand and Aggregate which are given below.
M10 Ratio 1: 3 : 6 Here 1 is cement , 3 is Sand and 6 is Aggregate
M 15 Ratio 1: 2 : 4 Here 1 is cement , 2 is Sand and 4 is Aggregate
M20 Ratio 1: 1.5 : 3 Here 1 is cement , 1.5 is Sand and 3 is Aggregate
M25 Ratio 1: 1 : 2 Here 1 is cement , 1 is Sand and 2 is Aggregate
Density of Materials.
Cement – 1440 kg/m3
Dry Sand – 1540 to 1600 kg/m3
Aggregate – 1560 to 1600 kg/m3
One thing keep in your Mind When you found the volume of any shapes to that volume will be the volume of concrete But that Volume will be Wet volume of concrete and than we will convert it to dry volume , ( Because we bring the dry volume of materials from market for construction), So we have the given procedure to convert the wet volume to dry volume.
Convert Wet Volume to Dry
Dry Volume = Wet Volume + 54% of wet volume
Dry Volume = Wet Volume x 1.54
How to calculate quantity for 10 cubic meter concrete
We have been given Grade – M15 and we have to calculate the quantity of cement, sand and aggregate in cft, cum and kg.
Volume = 10 cubic meter (Now this is the Wet volume ) change it to dry volume.
Dry Volume of Concrete
This is wet volume, so we need to convert it into dry volume.
Dry volume = wet volume x 1.54 = 10 x 1.54 = 15.4 cubic meter
We know that the ratio for M15 is 1:2:4
Actual volume = Dry volume/Sum of M15 ratio = 15.4/1 + 2 + 4 = 2.2 cubic meter
Quantity of Cement / Cement Bag No’s
Actual volume x cement ratio = 2.2 x 1 = 2.2 cubic meter
Actual volume x cement ratio x 35.32 = 2.2 x 1 x 35.31 = 77.68 cubic feet
Actual volume x cement ratio x density = 2.2 x 1 x 1440 = 3168 kg
Actual volume x cement ratio x 28.8 = 2.2 x 1 x 28.8 = 63.36 bag
calculate sand and aggregate quantity
Actual volume x sand ratio = 2.2 x 2 = 4.4 cubic meter
Actual volume x sand ratio x 35.31 = 155.36 cubic feet
Actual volume x sand ratio x density = 2.2 x 2 x 1540 = 6776 kg
Actual volume x Aggregate ratio x 35.31 = 2.2 x 4 x 35.31 = 310 cubic feet
Actual volume x Aggregate ratio x density = 2.2 x 4 x 1600 = 14080 kg
Actual volume x Aggregate ratio = 2.2 x 4 = 8.8 cubic meter
- 12 Important Points for Civil Site Engineers to Remember at Site
- How to Calculate Quantity of Steel for RCC Beam , Column and Slab?
- Reinforcement Lapping Zone Formulas For beam and Column
- Why plinth beam provide in Building Construction? and its purpose
- Why are we Design Circular Column for Bridges?