Unit weight of steel | unit weight of steel bars | unit weight of steel per meter | unit weight of steel per foot | unit weight of steel 8mm | unit weight of steel 10mm | unit weight of steel 12mm | unit weight of steel 16mm | unit weight of steel 20mm | unit weight of steel as per IS code | unit weight of steel bars formula | unit weight of steel in kg/m | unit weight of steel in kn/m3.

Steel also known as reinforcement bars or rebar embedded in concrete member to increase their tensile strength. As we know that Steel are used in formation of structural member like column, beam, footing, foundation, slab of building. Different size of Steel bar supply by supplier having length 12 metre or 40 ft.

Unit mass of steel or rebar is the ratio of weight of Steel to its per unit volume. Usually it is expressed in kilograms per cubic metre (kg/m3) or Pounds per cubic feet (lb/ft3). Unit mass of steel is 7850 kg/m3 (kilograms per cubic metre) or 490 lbs/ft3 (pounds per cubic feet).

**Unit weight of steel:-** unit weight of steel is defined as the ratio of weight of steel to unit volume of steel, unit weight of steel is generally measured in kg per cubic meter is 7850kg/m3, measured in kN per cubic meter is 78.5kN/m3 or measured in gram per cubic centimetre is 7.85 g/cm3, which is approximately equal in pounds per cubic feet is 490 lbs/ft3 or measured in Pounds per cubic yards is 13,231 lbs/yd3.

Generally steel bars come in diameter of 8mm (2.5 soot), 10mm (3 soot), 12mm (4 soot), 16mm (5 soot), 20mm (6 soot), 25mm (8 soot), 32mm and so on– and supplied in straight or U shaped bent length of 12m or 40 feet.

In this article we read about unit weight of steel bars 8mm, 6mm, 10mm, 12mm, 16mm and 20mm and so more. And read about unit weight of steel per meter, per foot, in kg/m3, kn/m3 and volume of round Steel bar. And read steel weight bar, formula for steel weight, d2/162 derivation, different size of Steel bar, 8mm steel weight per meter, 10 mm steel weight, 12mm steel weight, 16mm steel bar weight and 20mm steel weight.

Unit Weight of steel is defined as ratio of weight of steel to its unit volume, weight of Steel measured in kilogram (kg) and pounds (lbs) and its volume is measured in cubic metre (m3) and cubic feet (ft3). Then its unit weight = unit mass/unit volume, represented as W = m/V, where W is Steel unit weights, m for mass and V for volume. It is also known as specific weight of steel or density of steel and their SI unit is kilogram per cubic metre (kg/m3). Steel is most used element in civil engineering for structural construction, after knowing the Steel Unit Weight, it is easy to calculate amount of Steel required for projects.

**Unit weight of steel bars**

The unit weight of the steel bars (rebar) is assumed to be 7,850 kg/m3 or 78.5 kN/m3 or 7.85 grams per cubic centimeter or 490 pounds per cubic foot or 13,231 Pounds per cubic yard. The unit weight of steel or specific gravity of steel is the ratio of the mass of steel to its per unit volume. Steel bars are mainly used as reinforcement to reinforce concrete structures.

The typical unit weight of steel bars: 6 mm is about 0.222 kg/m, 8 mm is about 0.395 kg/m, 10 mm is about 0.617 kg/m, 12 mm is about 0.89 kg/m, 16 mm is about 1.58 kg/m, 20 mm is about 2.47 kg/m, 25 mm is about 3.86 kg/m and 32 mm is about 6.32 kg/m.

**Unit weight of steel per meter**

Steel Bar Weight:- The typical unit weight of 6mm steel bar is about 0.222kg per meter, 8mm steel bar is 0.395kg per meter, 10mm steel bar is 0.617kg per meter, 12mm steel bar is 0.89kg per meter, 16mm steel bar is 1.58kg per meter, 20mm steel bar is 2.47kg per meter, 25mm steel bar is 3.86kg per meter, 32mm steel bar is 6.32kg per meter and 40mm steel bar is 9.87kg per meter.

**Unit weight of Steel per foot**

The typical unit weight of 6mm Steel bars is about 0.067kg per foot, 8mm steel is 0.120kg per foot, 10mm steel is 0.188kg per foot, 12mm steel is 0.270kg per foot, 16mm steel is 0.480kg per foot, 20mm steel is 0.751kg per foot, 25mm steel is 1.174kg per foot and for 32mm steel is 1.925kg per foot.

**Rod weight per bundle: 12mm, 10mm, 8mm, 16mm, 20mm & 25mm steel bar**

**Rod weight per piece: 12mm, 10mm, 8mm, 16mm, 20mm & 25mm steel bar**

**Rod weight per meter: 12mm, 10mm, 8mm, 16mm, 20mm & 25mm steel bar**

**Steel unit weight**:- steel unit weight is defined as mass per unit length, if weight reinforcing bar/ rebar measured in pounds per foot known as Unit weight of rebar in lb/ ft.

**Unit weight of steel in pounds per foot**

The typical unit weight of #2.5 rebar or steel bars is about 0.265 pounds per foot, #3 rebar is 0.376lb/foot, #4 rebar is 0.668lb per foot, #5 rebar is 1.043lb per foot, #6 rebar is 1.502lb/ foot, #7 rebar is 2.044lb/ foot, #8 rebar is 2.67lb/ foot, #9 rebar is 3.40lb/ foot, #10 rebar is 4.303lb/ foot and #11 rebar is 5.313lb/foot.

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**Unit weight of steel in kg/m3**

The typical unit weight of steel is 7,850 kg/m3. It means when measured in cubic metre, weight of 1m3 of steel is around 7,850kg. Thus, 7,850 kilograms per cubic meter is the unit weight of steel in kg/m3.

**Unit weight of steel in kN/m3**

The typical unit weight of steel is 78.50 kN/m3. It means when measured in kilo Newton, a typical 1m3 of steel weight is around 7,850kN. Thus, 7850 kilo -Newton per cubic meter is the unit weight of steel in kN/m3.

**Unit weight of steel in N/mm3**

7.85× 10^-8 is the Unit weight of steel in N/mm3. It means when measured in Newton, a typical 1mm3 of steel weight is around 7.85 × 10^-8 N. Thus, 7.850 × 10^-8 Newton per cubic millimeter is the unit weight of steel in N/mm3.

**Unit weight of steel in kg/ft3**

222 is the Unit weight of steel in kg/ft3. It means when measured in kg, a typical 1ft3 of steel weight is around 222kg. Thus, 222 kilograms per cubic foot is the unit weight of steel in kg/ft3.

**Unit weight of steel in lb/ft3**

490 is the Unit weight of steel in lb/ft3. It means when measured in pound, a typical 1ft^3 of steel weight is around 490 pounds. Thus, 490 pounds per cubic foot is the unit weight of steel in lb/ft3.

**Unit weight of steel in g/cm3**

7.85 is the Unit weight of steel in g/cm3. It means when measured in grams, a typical 1cm3 of steel weight is around 7.85 grams. Thus, 7.85 grams per cubic centimeter is the unit weight of steel in g/cm3.

**Unit weight of steel bars formula**

There are two formula to calculate unit weight of steel bars, 1) D^2L/162 & 2) D^2L/533. This formula, D^2L/162 of steel bars are used to calculate weight of steel per meter, for example unit weight of 8mm diameter of steel = (8×8×1)÷162 = 0.395 kg/m. The D^2L/533 steel bars formula are used to calculate weight of steel per foot, for example unit weight of 8mm diameter of steel = (8×8×1)÷533 = 0.12 kg/ft.

**Unit weight of steel 6mm**

The typical unit weight of 6mm dia of steel bar or rod is around 0.222kg per meter which is approximately equal as 0.0676 kg per foot. One piece of 12 meter (40 ft) length of 6mm diameter of steel rods weight is 2.664 kgs.

**Unit weight of steel 8mm**

The typical unit weight of 8mm dia of steel bars or rods is around 0.395kg per meter which is approximately equal as 0.12 kg per foot. One piece of 12 meter (40 ft) length of 8mm diameter of steel rods weight is 4.74 kgs.

**Unit weight of steel 10mm**

The typical unit weight of 10mm dia of steel bars or rods is around 0.617kg per meter which is approximately equal as 0.188 kg per foot. One piece of 12 meter (40 ft) length of 10 mm diameter of steel rods weight is 7.407 kgs.

**Unit weight of steel 12mm**

The typical unit weight of 12mm dia of steel bars or rods is around 0.889kg per meter which is approximately equal as 0.27 kg per foot. One piece of 12 meter (40 ft) length of 12 mm diameter of steel rods weight is 10.667 kgs.

**Unit weight of steel 16mm**

The typical unit weight of 16mm dia of steel bars or rods is around 1.58kg per meter which is approximately equal as 0.48 kg per foot. One piece of 12 meter (40 ft) length of 16 mm diameter of steel rods weight is 18.96 kgs.

**Unit weight of steel 20mm**

Unit weight of 20mm dia of steel bars or rods is around 2.47kg per meter which is approximately equal as 0.752 kg per foot. One piece of 12 meter (40 ft) length of 20 mm diameter of steel rods weight is 29.62 kgs.

**Unit weight of steel as per IS code**

As per IS code and Indian standard the unit weight of structural steel is taken as 7850 kg/m3 or 78.50 kN/m3 or 7.85 g/cm3 or 490 lbs/ft3 or 13,231 lbs/yd3.

**Conclusions**:-

The unit weight of the structural steel bars or rod is assumed to be 7,850 kg/m3, 78.50 kN/m3, 7.85 g/cm^3, 490 lbs/ft^3 or 13,231 lbs/yd^3.