# Calculation of concrete

Calculation of concrete
The composition of concreteNumber of concrete Per 1 cubic meter of concrete required bags of cementA kilo of cement in one bagconcrete proportionscement: sand: Macadam by weightThe cost of building materialsCement (50 kg bag)Sand (1 ton)Rubble (1 ton)
 The number and cost of materials for the preparation of 5cubic meters of concrete The required number of bags of cement 30(1500)kg The cost of cement 6000 Sand 3750kg The cost of sand 1125 crushed stone 5400kg The cost of gravel 2160 Total: 9285

### information on the composition of concrete

Proportions and consumption of cement, sand and gravel for the preparation of a concrete cube of a default given the reference, as recommended by manufacturers of cement.
Similarly, the price of cement, sand, gravel can vary significantly in different regions.

The composition of the finished concrete mixture depends on the size (fraction) of crushed stone or gravel, cement brand, its freshness. It is known that during prolonged storage cement loses its properties and cement quality deteriorates more rapidly at elevated humidity. Please note that the cement in bags can not weigh 50kg, as it is written on it. Trust but verify. How much cement you poured'd better check.

Please note that the cost of sand and gravel is specified in the program for 1 ton. Vendors also announced a price per cubic meter of sand or crushed stone or gravel.

Specific weight of the sand depends on its origin, for example, river sand is heavier than a career.
1 cubic meter of sand weighs 1200-1700 kg on average - 1500 kg.

Gravel and crushed stone. According to various sources weight of 1 cubic meter varies between 1200 to 2500 kg depending on the fraction (size). Heavier - more than fine.

So count the cost per ton of sand and gravel you have to yourself. Or checked with sellers.

However, the calculation still helps to know the estimated costs for building materials for the preparation of the necessary quantity of concrete.

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