![]() Since Specific Gravity - SG - is dimensionless, it has the same value in the SI system and the imperial English system. Moist unit weight The unit weight of a soil when void spaces of the soil contain both water and air. H2O density of water - normally at temperature 4 o C kg/m 3 It is common to use the density of water at 4 o C (39 o F) as a reference since water at this point has its highest density of 1000 kg/m 3 or 1.940 slugs/ft 3. How to Convert 7 Pound/Cubic Feet to Water Densities (7 lb/ft3 to H2O). In soil mechanics, specific weight may refer to: Water Density converter tool to convert Pound/Cubic Feet to Water Density. We assume you are converting between pound/cubic foot and kilogram/cubic metre.You can view more details on each measurement unit: lb/ft3 or kg/m3 The SI derived unit for density is the kilogram/cubic meter. Specific weight is often used as a property of soil to solve earthwork problems. More information from the unit converter. Specific weight can be used as a characteristic property of a fluid. For this reason, units are expressed as force per unit volume (e.g., N/m 3 or lbf/ft 3). In fluid mechanics, specific weight represents the force exerted by gravity on a unit volume of a fluid. Pressure may also affect values, depending upon the bulk modulus of the material, but generally, at moderate pressures, has a less significant effect than the other factors. ![]() It depends on the value of the gravitational acceleration, which varies with location. But this definition is not sufficient for you. It’s a simple definition, isn’t it To be more specific, here you can see the definition of density of water lb/ft3: Mass of water given in pounds per its volume given in cubic feet. Unlike density, specific weight is not a fixed property of a material. How does it look after a little modification The density of water is its mass per unit volume. The standard gravity is acceleration due to gravity, usually given in m/s 2, and on Earth usually taken as 9.81 m/s 2. Most people are content to refer to the density of water as 62.4 lbs/ft3 even though it isn’t formally correct. ![]() The density of the material is defined as mass per unit volume, typically measured in kg/m 3. We generally don’t use the formal definition of density for water but assume we are on Earth and actually use its weight density which we know to be 62.4 lbs/ ft3 or 8.34 lbs/gallon.
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