What Is Unit Weight?
Important Point
The ratio of the weight of a material to its volume is its unit weight, sometimes termed specific weight or weight density.
The unit weight of water, γw, is 9.81 kN/m3 in the SI system and 62.4 lb/ft3 in the English system.
Also, read: What Is a Field Dry Density Test | Different Type of Field Density Tests
What Is Density?
The term density is used herein to denote the mass-to-volume ratio of the material. However, some references, particularly older ones, use the term to describe unit weight.
Density is denoted by p. Because m = W/g, the unit weight terms defined above can be converted to mass densities as follows:
ρ = M/V
ρ = Density
M = Mass
V = Volume
In the SI system mass densities are commonly expressed in Mg/m3, kg/m3, or g/ml. The mass density of water can therefore be expressed ρw = 1000 kg/m3 = 1 Mg/m3 = 1 g/ml.
The mass density of soil solids typically ranges from 2640 to 2750 kg/m3. Where mass or mass density values (g, kg, or kg/m3) are given or measured, they must be multiplied by g(9.8 m/s2) to obtain weights or unit weights before performing stress calculations.
In the English system mass density values are virtually never used in geotechnical engineering and all work is performed in terms of unit weights (1b/ft3).
Also, read: Tension Vs Compression | What Is Tension & Compression
What Is Unit Weight Material?
Unit weight material is also known as Specific material weight. Unit weight material is the weight of the material per unit volume.
As we know that the volume is identified in terms of liters or m3 and weight is measured in terms of Kg or KN.
The unit weight of materials is the weight of material/unit volume which means the Unit weight is expressed in Kg/L or KG/m3 or KN/m3.
For easy reference, we organized all the building materials unit weights in a table. This list is a collective effort. Give a thumbs up if you liked it. Bookmark the page and use the search if required.
Also, read: Density of Cement Sand and Aggregate | Cement Density | Sand Density | Aggregate Density | list of Density
Unit Weight Building Materials
Sr.No.
|
Material
|
Unit Weight
|
| 1 | A.C Sheet | 17 Kg/m3 |
| 2 | Aerocon Bricks | 551 to 600 Kg/m3 |
| 3 | Alcohol | 780 Kg/m3 |
| 4 | Aluminum | 2739 Kg/m3 |
| 5 | Anthracite Coal | 1550 Kg/m3 |
| 6 | Ashes | 650 Kg/m3 |
| 7 | Ballast | 1720 Kg/m3 |
| 8 | Birch Wood | 670 Kg/m3 |
| 9 | Bitumen | 1040 Kg/m3 |
| 10 | Bituminous concrete | 2243 Kg/m3 |
| 11 | Bituminous Macadum | 2400 Kg/m3 |
| 12 | Brick | 1600 – 1920 Kg/m3 |
| 13 | Brick Jelly | 1420 Kg/m3 |
| 14 | Brick Masonry | 1920 Kg/m3 |
| 15 | Cast iron | 7203 Kg/m3 |
| 16 | Ceement Slurry | 1442 Kg/m3 |
| 17 | Cement Concrete block | 1800 Kg/m3 |
| 18 | Cement Grout | 1500 to 1800 Kg/m3 |
| 19 | Cement Mortar | 2000 Kg/m3 |
| 20 | Cement Plaster | 2000 Kg/m3 |
| 21 | Cemrent | 1400 Kg/m3 |
| 22 | Chalk | 2220 Kg/m3 |
| 23 | Clay (Damp) | 1760 Kg/m3 |
| 24 | Clay (dry) | 1600 Kg/m3 |
| 25 | Clinker | 750 Kg/m3 |
| 26 | Coal Tar | 1200 Kg/m3 |
| 27 | Coarse Aggregate | 1680-1750 Kg/m3 |
| 28 | Cobalt | 8746 Kg/m3 |
| 29 | Copper | 8940 Kg/m3 |
| 30 | Crude Oil | 880 Kg/m3 |
| 31 | Cuddapa | 2720 Kg/m3 |
| 32 | Disel | 745 Kg/m3 |
| 33 | Dry Rubble Masonry | 2080 Kg/m3 |
| 34 | Earth (Dry,loose) | 1200 Kg/m3 |
| 35 | Fly Ash | 1120 to 1500 Kg/m3 |
| 36 | Fly Ash Brick Masonry | 2000 to 2100 Kg/m3 |
| 37 | Fly Ash Bricks | 1468 to 1700 Kg/m3 |
| 38 | Galvanized Iron Steel (0.56 mm) | 5 Kg/m3 |
| 39 | Galvanized Iron Steel (1.63 mm) | 13 Kg/m3 |
| 40 | Gasoline | 670 Kg/m3 |
| 41 | GeoPolimer Concrete | 2400 Kg/m3 |
| 42 | Glass Reinforced Concrete | 2000 to 2100 Kg/m3 |
| 43 | Granite Stone | 2460-2800 Kg/m3 |
| 44 | Graphite | 1200 Kg/m3 |
| 45 | Gravel Soil | 2000 Kg/m3 |
| 46 | Green Concrete | 2315 to 2499 Kg/m3 |
| 47 | Heavy Charcoal | 530 Kg/m3 |
| 48 | Ice | 910 Kg/m3 |
| 49 | Igneous rocks (Felsic) | 2700 Kg/m3 |
| 50 | Igneous rocks (Mafic) | 3000 Kg/m3 |
| 51 | Kerosene | 800 Kg/m3 |
| 52 | Larch Wood | 590 Kg/m3 |
| 53 | Laterite Stone | 1019 g/m3 |
| 54 | Lead | 11340 Kg/m3 |
| 55 | Light Charcoal | 300 Kg/m3 |
| 56 | Light Weight Concrete | 800 to 1000 Kg/m3 |
| 57 | Lime Concrete | 1900 Kg/m3 |
| 58 | Lime Plaster | 1700 Kg/m3 |
| 59 | Lime Stone | 2400 – 2720 Kg/m3 |
| 60 | M Sand | 1540 Kg/m3 |
| 61 | Magnesium | 1738 Kg/m3 |
| 62 | Mahogany | 545 Kg/m3 |
| 63 | Mangalore Tiles with Battens | 65 Kg/m3 |
| 64 | Maple | 755 Kg/m3 |
| 65 | Marble Stone | 2620 Kg/m3 |
| 66 | Metamorphic rocks | 2700 Kg/m3 |
| 67 | Mud | 1600-1920 Kg/m3 |
| 68 | Nickel | 8908 Kg/m3 |
| 69 | Nitric Acid (91 percent) | 1510 Kg/m3 |
| 70 | Oak | 730 Kg/m3 |
| 71 | Peat | 750 Kg/m3 |
| 72 | Petrol | 720 Kg/m3 |
| 73 | Pitch | 1100 Kg/m3 |
| 74 | Plain Cement Concrete | 2300 Kg/m3 |
| 75 | Plaster of Paris | 881 Kg/m3 |
| 76 | Plastics | 1250 Kg/m3 |
| 77 | Quarry Dust | 1300 to 1450 Kg/m3 |
| 78 | Quartz | 2320 Kg/m3 |
| 79 | Quick lime | 33450 Kg/m3 |
| 80 | Rapid Hardening Cement | 1250 Kg/m3 |
| 81 | Red Wood | 450-510 Kg/m3 |
| 82 | Reinforced Cement Concrete | 2400 Kg/m3 |
| 83 | Rubber | 1300 Kg/m3 |
| 84 | Rubble stone | 1600-1750 Kg/m3 |
| 85 | Sal Wood | 990 Kg/m3 |
| 86 | Sand | 1440-1700 Kg/m3 |
| 87 | Sandstone | 2250 to 2400 Kg/m3 |
| 88 | Sedimentary rocks | 2600 Kg/m3 |
| 89 | Shale Gas | 2500 Kg/m3 |
| 90 | Silt | 2100 Kg/m3 |
| 91 | Slag | 1500 Kg/m3 |
| 92 | Stainless Steel | 7480 Kg/m3 |
| 93 | Steel | 7850 Kg/m3 |
| 94 | Sulphuric Acid (87 Percent) | 1790 Kg/m3 |
| 95 | Teak | 630-720 Kg/m3 |
| 96 | Tin | 7280 Kg/m3 |
| 97 | Water | 1000 Kg/m3 |
| 98 | Zinc | 7135 Kg/m3 |
Unit Weight of Materials
Unit weight or specific weight of any material is its weight per unit volume that means in a unit volume, how much weight of the material can be placed. Volume is measured in litres or cubic meters, and weight is expressed in kg or kilo Newton.
Unit Weight
Unit Weight is the weight per unit volume of a material. Unit Weight = Weight of Material. Volume of Material. Example: U.W. = 103.2 lbs = 103.2 pcf.
What Is Unit Weight?
The unit weight of a substance is calculated by dividing its weight by its volume. In the International System of Units (SI), the unit weight is typically expressed in newtons per cubic meter (N/m³) or kilograms per cubic meter (kg/m³). In the United States customary units, it is commonly expressed in pounds per cubic foot (lb/ft³).
Rubble Density Kg/m3
The bulk density ranges from 1,86 g/cm3 to 2,33 g/cm3.
Unit Weight Definition
Unit weight, also known as specific weight or weight density, is a measure of the weight of a substance per unit volume. It quantifies the amount of mass in a given volume of a material and is expressed in units of force per unit volume, such as newtons per cubic meter (N/m³) or pounds per cubic foot (lb/ft³).
What Is Density?
Density is the substance’s mass per unit of volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume: where ρ is the density, m is the mass, and V is the volume.
Unit Weight Means
The specific weight, also known as the unit weight, is the weight per unit volume of a material. A commonly used value is the specific weight of water on Earth at 4 °C (39 °F), which is 9.807 kilonewtons per cubic metre or 62.43 pounds-force per cubic foot.
Cement Unit Weight
Normal weight concrete is in the range of 140 – 150 lbs./cu. ft. For normal weight concrete, a change in unit weight of 1.5 lbs./cu. ft.
Define Unit Weight
The specific weight, also known as the unit weight, is the weight per unit volume of a material. A commonly used value is the specific weight of water on Earth at 4 °C, which is 9.807 kilonewtons per cubic metre or 62.43 pounds-force per cubic foot.
Density of Rubble Stone
The density of rubble stone can range from approximately 1500 to 2500 kilograms per cubic meter (kg/m³) or 94 to 156 pounds per cubic foot (lb/ft³). However, it’s important to note that these values are approximate and can vary based on the specific type of rubble stone, its porosity, and other factors.
Density Vs Unit Weight
Density is mass per unit volume, whereas unit weight is force per unit volume. In this standard, density is given only in SI units. After the density has been determined, the unit weight is calculated in SI or inch-pound units, or both.
What Is a Unit Weight?
The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, and about one-sixth as much on the Moon.
Density of Laterite Stone in Kn/m3
Laterite weighs 1.02 gm/cm³ or 1,019 kg/m³., i.e. density of Laterite is equal to 1,019 kg/m³.
Unit Weight of Cement
The unit weight of cement can vary slightly depending on the specific type and brand of cement. However, as a general guideline, the typical unit weight of cement is around 1440 kilograms per cubic meter (kg/m³) or 90 pounds per cubic foot (lb/ft³).
Unit Weight of Construction Materials
Unit weight of the material is simply defined as Mass per Volume (M/V) and also it is called Specific Weight or Density.
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