\[\gamma = \frac{G}{V}=\frac{m \cdot g}{V} \tag{1}\] where: Specific weight is the weight of the material per unit volume. The Greek letter gamma (γ) is used to denote the specific weight.

Informally, it is the amount of energy that must be added, in the form of heat, to one unit of mass of the substance in order to cause an increase of one unit in its temperature.The SI unit of specific heat is joule per kelvin and kilogram, J/(K kg).
Unit weight of a soil mass is the ratio of the total weight of soil to the total volume of soil. For calculation purposes in SI units, gw may be taken as 9.81 kN/m3.

The specific gravity stands for a dimensionless unit that defines the ratio of density of a substance to the density of water.

The last characteristic of a fluid that is dependent on density is the specific weight of a fluid.

The density of water is 1.94 slug/ft³ or 1000 kg/m³ (1 gr/cm³); Specific Weight. The ratio between weight and volume is called specific weight.The symbol used for specific weight is γ and the SI unit of measurement is N/m 3. Specific Volume.

Unit Weight, g, is usually determined in the laboratory by measuring the weight and volume of a relatively undisturbed soil sample obtained from a brass ring.Measuring unit weight of soil in the field may consist of a sand cone test, rubber balloon or nuclear densiometer.
Water has the specific weight of 62.43 pounds per cubic foot or 9.807 Newtons per cubic meter.

Inter-conversion between density and unit weight. The density of water is 1000 kg/cubic meters at 4 Celsius. Density is the ratio of the mass to the volume of a substance:. Unit weight or Specific Weight of sand is calculated by the product of the density of sand and the standard gravity of sand. Specific weight definition is - the weight of a substance per unit volume in absolute units equal to the density multiplied by the acceleration of gravity. This, however, is just the reciprocal of density, and actually represents the same thing. Hence, the submerged unit weight or the buoyant unit weight is also expressed as: \[\gamma’ = \gamma_{sat} – \gamma_{w}\] where, gw is the unit weight of water.

Watch Queue Queue. Watch Queue Queue. Specific weight, sometimes referred to as unit weight, is simply the weight of fluid per unit volume. The specific heat capacity of a substance is the heat capacity of a sample of the substance divided by the mass of the sample. Loading... Close. Welcome to Mometrix Academy!


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