## What Is Unit Weight?

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/m^{3} in the SI system and 62.4 lb/ft^{3} 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/m ^{3}, kg/m^{3}, or g/ml. **The mass density of water can therefore be expressed

**ρw = 1000 kg/m**

^{3}= 1 Mg/m^{3}= 1 g/ml.The mass density of **soil solids typically ranges from 2640 to 2750 kg/m ^{3}**. Where mass or mass density values (g, kg, or kg/m

^{3}) are given or measured, they must be multiplied by g(9.8 m/s

^{2}) 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/ft ^{3})**.

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 m ^{3} 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/m ^{3} or KN/m^{3}.**

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

Material |
Unit Weight |
---|---|

A.C Sheet |
17 Kg/m |

Aerocon Bricks |
551 to 600 Kg/m |

Alcohol |
780 Kg/m |

Aluminum |
2739 Kg/m |

Anthracite Coal |
1550 Kg/m |

Ashes |
650 Kg/m |

Ballast |
1720 Kg/m |

Birch Wood |
670 Kg/m |

Bitumen |
1040 Kg/m |

Bituminous concrete |
2243 Kg/m |

Bituminous Macadum |
2400 Kg/m |

Brick |
1600 – 1920 Kg/m |

Brick Jelly |
1420 Kg/m |

Brick Masonry |
1920 Kg/m |

Cemrent |
1400 Kg/m |

Cast iron |
7203 Kg/m |

Ceement Slurry |
1442 Kg/m |

Cement Concrete block |
1800 Kg/m |

Cement Grout |
1500 to 1800 Kg/m |

Cement Mortar |
2000 Kg/m |

Cement Plaster |
2000 Kg/m |

Chalk |
2220 Kg/m |

Clay (Damp) |
1760 Kg/m |

Clay (dry) |
1600 Kg/m |

Clinker |
750 Kg/m |

Coal Tar |
1200 Kg/m |

Coarse Aggregate |
1680-1750 Kg/m |

Cobalt |
8746 Kg/m |

Copper |
8940 Kg/m |

Crude Oil |
880 Kg/m |

Cuddapa |
2720 Kg/m |

Disel |
745 Kg/m |

Dry Rubble Masonry |
2080 Kg/m |

Earth (Dry,loose) |
1200 Kg/m |

Fly Ash |
1120 to 1500 Kg/m |

Fly Ash Brick Masonry |
2000 to 2100 Kg/m |

Fly Ash Bricks |
1468 to 1700 Kg/m |

Galvanized Iron Steel (0.56 mm) |
5 Kg/m |

Galvanized Iron Steel (1.63 mm) |
13 Kg/m |

Gasoline |
670 Kg/m |

GeoPolimer Concrete |
2400 Kg/m |

Glass Reinforced Concrete |
2000 to 2100 Kg/m |

Granite Stone |
2460-2800 Kg/m |

Graphite |
1200 Kg/m |

Gravel Soil |
2000 Kg/m |

Green Concrete |
2315 to 2499 Kg/m |

Heavy Charcoal |
530 Kg/m |

Ice |
910 Kg/m |

Igneous rocks (Felsic) |
2700 Kg/m |

Igneous rocks (Mafic) |
3000 Kg/m |

Kerosene |
800 Kg/m |

Larch Wood |
590 Kg/m |

Laterite Stone |
1019 g/m |

Lead |
11340 Kg/m |

Light Charcoal |
300 Kg/m |

Light Weight Concrete |
800 to 1000 Kg/m |

Lime Concrete |
1900 Kg/m |

Lime Plaster |
1700 Kg/m |

Lime Stone |
2400 – 2720 Kg/m |

M Sand |
1540 Kg/m |

Magnesium |
1738 Kg/m |

Mahogany |
545 Kg/m |

Mangalore Tiles with Battens |
65 Kg/m |

Maple |
755 Kg/m |

Marble Stone |
2620 Kg/m |

Metamorphic rocks |
2700 Kg/m |

Mud |
1600-1920 Kg/m |

Nickel |
8908 Kg/m |

Nitric Acid (91 percent) |
1510 Kg/m |

Oak |
730 Kg/m |

Peat |
750 Kg/m |

Petrol |
720 Kg/m |

Pitch |
1100 Kg/m |

Plain Cement Concrete |
2300 Kg/m |

Plaster of Paris |
881 Kg/m |

Plastics |
1250 Kg/m |

Quarry Dust |
1300 to 1450 Kg/m |

Quartz |
2320 Kg/m |

Quick lime |
33450 Kg/m |

Rapid Hardening Cement |
1250 Kg/m |

Red Wood |
450-510 Kg/m |

Reinforced Cement Concrete |
2400 Kg/m |

Rubber |
1300 Kg/m |

Rubble stone |
1600-1750 Kg/m |

Sal Wood |
990 Kg/m |

Sand |
1440-1700 Kg/m |

Sandstone |
2250 to 2400 Kg/m |

Sedimentary rocks |
2600 Kg/m |

Shale Gas |
2500 Kg/m |

Silt |
2100 Kg/m |

Slag |
1500 Kg/m |

Stainless Steel |
7480 Kg/m |

Steel |
7850 Kg/m |

Sulphuric Acid (87 Percent) |
1790 Kg/m |

Teak |
630-720 Kg/m |

Tin |
7280 Kg/m |

Water |
1000 Kg/m |

Zinc |
7135 Kg/m |

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