When it comes to building construction, TMT steel bars are the crucial components to hold the structure and provide strength to the building. Knowing the unit weight of steel bars is crucial as specific construction requires a specific weight of steel bars. Even though the length of the steel bars istypicallythe same, the weight varies depending on the diameter of the bars that are available in 8mm, 10mm, 12mm, 16mm, 20mm, & 25mm.
Theformula to calculate the weight of the steel bars is-
Weight = Volume × Density
= (π×Radius2×Length) ×Density
= (π×Diameter2×Length)/4 ×Density
= (π×Diameter2×Length×Density)/4 [ where π=3.14159 (approximately) and the density of the bars is approximately 7850 kg/m³.
However, the weight and unit weight are different. The unit of weight of steel bars indicates the weight of the bar per unit length.
Unit Weight of Steel Bars
Let’s take a look at the below weight chart to learn about the unit weight of steel bars with different diameters-
| TMT Steel Bar Diameter (mm) | Unit Weight of theBar (Kg/m) | Approximate Total Weight of the Bar (Kg) |
| 6mm | 0.222 | 1.39 |
| 8mm | 0.395 | 2.47 |
| 10mm | 0.617 | 3.85 |
| 12mm | 0.889 | 5.56 |
| 16mm | 1.58 | 9.87 |
| 20mm | 2.469 | 15.41 |
| 25mm | 3.858 | 24.08 |
| 28mm | 4.84 | 30.25 |
| 32mm | 6.321 | 39.5 |
| 40mm | 9.877 | 61.73 |
Specifications and Applications of Different Steel Bars
· 6mm TMT Steel Bar
The unit weight of the 6mm TMT steel bar is 0.222 kg/m.
The approximate total weight of a 6mmTMT steel bar is1.39kg.
Applications:
Due to its lightweight, the 6mm TMT steel bars are suitable for very small-scale projects and some residential constructions. This type of steel bar can help build a stable structure. Structures that do not require high load-bearing capacities, can be built using this steel bar.
· 8mm TMT Steel Bar
The unit weight of the 8mm TMT steel bar is 0.395kg/m.
The approximate total weight of an8mm TMT steel bar is2.47kg.
Applications: Many residential and small official structures are built using the 8mm TMT steel bars. Despite its low load-bearing capacity, this steel bar is a popular choice because of its stability.
· 10mm TMT Steel Bar
The unit weight of the 10mm TMT steel bar is 0.617kg/m.
The approximate total weight of a 10mm TMT steel bar is3.85kg.
Applications: You can find the application of a 10mm TMT steel bar in a variety of construction projects. This steel bar is useful for providing excellent stability to the structure and creating a balance between flexibility and strength.
· 12mm TMT Steel Bar
The unit weight of the 12mm TMT steel bar is 0.889kg/m.
The approximate total weight of a 12mm TMT steel bar is5.56kg.
Applications: Construction projects that require enhanced stability and improved strength, involve 12mm TMT steel bars.
· 16mm TMT Steel Bar
The unit weight of the 16mm TMT steel bar is 1.58kg/m.
The approximate total weight of a 16mm TMT steel bar is9.87kg.
Applications: In high-scale infrastructure projects and commercial buildings, 16mm TMT steel bars are appropriate for their high-load-bearing capacities.
· 20mm TMT Steel Bar
The unit weight of the 20mm TMT steel bar is 2.469kg/m.
The approximate total weight of a 20mm TMT steel bar is15.41kg.
Applications: A 20mm TMT steel bar can offer a great balance between flexibility and strength. The diameter of this type of bar is suitable for several construction projects.
· 25mm TMT Steel Bar
The unit weight of the 25mm TMT steel bar is3.858kg/m.
The approximate total weight of a 25mm TMT steel bar is24.08kg.
Applications: The diameter of this bar meets the requirements of industrial constructions and large-scale infrastructure.
· 28mm TMT Steel Bar
The unit weight of the 28mm TMT steel bar is 4.84kg/m.
The approximate total weight of a 28mm TMT steel bar is30.25 kg.
Applications: In many industrial constructions, 28mm TMT steel bars are useful.
· 32mm TMT Steel Bar
The unit weight of the 32mm TMT steel bar is 6.321kg/m.
The approximate total weight of a 32mm TMT steel bar is39.5kg.
Applications: Heavy-duty building projects and high-strength structures require the use of 32mm TMT steel bars.
· 40mm TMT Steel Bar
The unit weight of the 40mm TMT steel bar is9.877kg/m.
The approximate total weight of a 40mm TMT steel bar is61.73kg.
Applications: In some extremely high-strength structural constructions and heavy industrial projects, 40mm TMT steel bars are used.
Why Is It Important to Know the Unit Weight of Steel Bars?
Knowing the unit weight of steel bars is essential to preparing an effective structural design, handling the required materials, and improving the efficiency of the overall project.
Five important reasons that suggest that it is important to know the unit of steel bars are as follows-
· To Prepare an Effective Structural Design:
The unit weight of TMT steel bars is crucial to estimating structural integrity and determining each element’s capacity to bear loads.
· To Analyze Loads:
By using the unit weight of steel bars, you can predict the weight-bearing capacity of the structure in the long term. You can also calculate live and dead loads imposed on the structure.
· To Handle Materials:
When you know the unit weight of TMT steel bars, you can select the equipment that is appropriate to lift steel components. You can also maintain proper on-site handling and improve transportation logistics.
· To Evaluate Costs:
The whole budget for your construction project varies depending on the unit weight of the steel bars.
· To Determine Material Specifications:
The unit weight of TMT steel bars needs to meet the engineering standards and building codes. Therefore, a specific unit weight is required to meet specific performance and safety standards.
Wrap Up:
This article helps you to learn about the unit weight of steel with different diameters, such as 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 28mm, 32mm, and 40mm. We have also explained why you should know the unit weight of steel bars for construction projects. However, the unit weight of steel bars can vary depending on various factors, such as the microstructure of steel, the composition of alloy elements, heat treatment, the deformation process, moisture content, the coating of the surface, impurities, the tolerance of the manufacturing process, temperature, steel grade, etc. When you are preparing the structural design for a construction project, you should consider these factors to precisely conduct the project.
