TMT Rod Weight Calculator
Here’s a comprehensive table with all you need to know about TMT rod weights:
| TMT Bar Size (mm) | Weight (kg/m) | Weight per 12m Rod (kg) | Rods per Bundle | Bundle Weight (kg) |
|---|---|---|---|---|
| 8 mm | 0.395 | 4.74 | 10 | 47.4 |
| 10 mm | 0.617 | 7.40 | 7 | 51.8 |
| 12 mm | 0.888 | 10.66 | 5 | 53.3 |
| 16 mm | 1.579 | 18.95 | 3 | 56.85 |
| 20 mm | 2.466 | 29.59 | 2 | 59.18 |
| 25 mm | 3.853 | 46.24 | 1 | 46.24 |
| 28 mm | 4.840 | 58.08 | 1 | 58.08 |
| 32 mm | 6.310 | 75.72 | 1 | 75.72 |
Key Points:
- Standard Length: TMT bars are typically produced in 12-meter lengths.
- Weight Calculation Formula: To calculate the weight of a TMT bar, use the formula: Weight (kg/m) = (D^2/162) x L, where D is the diameter in mm and L is the length in meters.
- Weight Tolerance: The weight of TMT bars must adhere to the standards outlined in IS:1786-2008, which allows for a slight variation in weight.
- Bundle Composition: The number of rods per bundle decreases as the diameter increases to maintain a relatively consistent bundle weight.
- Importance of Weight: The weight of TMT bars affects structural stability, handling and transportation, foundation design, and overall construction costs.
- Grade Considerations: Different grades of TMT bars (e.g., Fe 415, Fe 500, Fe 550) may have slight variations in weight due to differences in composition.
- Practical Use: Engineers and contractors often specify TMT bar requirements in terms of pieces, bundles, or metric tons, depending on the project needs.
This table and information provide a comprehensive overview of TMT rod weights, which is crucial for accurate material estimation and structural calculations in construction projects.