A Concrete structure may consists of beams, slabs, columns and foundations etc. based on type of structure. The volume of concrete required for concrete structure can be calculated by summing up the volumes of each structural member or each parts of members.
The volume of a rectangular cross sectional member can be calculated as length x width x height (or depth or thickness). Suitable formula shall be used for different cross-sectional shapes of members.
The formula for calculation of materials for required volume of concrete is given by:Contents:
Calculating Quantities of Materials for per cubic meter or cubic feet orÂ cubic yards concrete
Consider concrete with mix proportion of 1:1.5:3 where, 1 is part of cement, 1.5 is part of fine aggregates and 3 is part of coarse aggregates of maximum size of 20mm. The water cement ratio required for mixing of concrete is taken as 0.45.
Assuming bulk densities of materials per cubic meter,Â cubic feet andÂ cubic yardsÂ as follows: Cement = 1500 kg/m3Â = 93.642 lb/ft3 = 2528.332 lb/cubic yards Sand = 1700 kg/m3Â = 105Â lb/ft3 = 2865.443 lb/cubic yards Coarse aggregates = 1650 kg/m3Â = 103 lb/ft3 = 2781.166 lb/cubic yards Specific gravities of concrete materials are as follows: Cement = 3.15 Sand = 2.6 Coarse aggregates = 2.6. The percentage of entrained air assumed is 2%. The mix proportion of 1:1.5:3 by dry volume of materials can be expressed in terms of masses as: Cement = 1 x 1500 = 1500 Sand = 1.5 x 1700 = 2550 Coarse aggregate = 3 x 1650 = 4950. Therefore, the ratio of masses of these materials w.r.t. cement will as follows == 1 : 1.7 : 3.3
The water cement ratio = 0.45 Now we will calculate the volume of concrete that can be produced with one bag of cement (i.e. 50 kg cement) for the mass proportions of concrete materials. Thus, the absolute volume of concrete for 50 kg of cement =Concrete Calculator: Calculate Quantities of Materials for Concrete
Select Concrete Mix Proportion | |
Cement : | |
Sand : | |
Aggregates : | |
W/C Ratio : |
Select Concrete Member*: |
Dimension of Concrete Member | |
Length /Height: | mm |
Width : | mm |
Thickness / Depth : | mm |
Diameter : | mm |
Calculation Results: Quantities of Materials
Volume of Concrete = m^{3} = Yards = CFT = Pounds
Quantity of Cement = kg = Bags of 50 kg = Pounds
Quantity of Sand = kg = m^{3} = Yards = CFT = Pounds
Quantity of Coarse Aggregates = kg = m^{3} = Yards = CFT = Pounds
Quantity of Water = Liter = Gallons
Also Read:
Concrete Calculator - Calculate Concrete for Slab, Beam, Column and Footings
Concrete - Definition, Components, Manufacture, Construction and Articles
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