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Steel Weight Formula:
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The standard formula for calculating the weight of steel bars per meter is: Weight = D² / 162, where D is the diameter of the steel bar in millimeters. This formula provides the weight in kilograms per meter of steel bar length.
The calculator uses the steel weight formula:
Where:
Explanation: The formula calculates the cross-sectional area of the steel bar and multiplies it by the density of steel to determine the weight per meter, then multiplies by the total length.
Details: Accurate steel weight calculation is crucial for construction projects, material estimation, cost calculation, structural design, and transportation planning in civil engineering and construction industries.
Tips: Enter the diameter of the steel bar in millimeters and the length in meters. Both values must be positive numbers. The calculator will provide the total weight in kilograms.
Q1: Why is the constant 162 used in the formula?
A: The constant 162 is derived from the density of steel (7850 kg/m³) and unit conversion factors to simplify the calculation from diameter to weight per meter.
Q2: Does this formula work for all types of steel?
A: This formula is designed for mild steel with a density of approximately 7850 kg/m³. For other steel types with different densities, the formula may need adjustment.
Q3: Can I calculate weight for multiple bars?
A: Yes, simply multiply the calculated weight by the number of bars, or enter the total length of all bars combined.
Q4: What are common steel bar diameters?
A: Common diameters include 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 32mm, and 40mm, though other sizes are also available.
Q5: How accurate is this calculation method?
A: The formula provides a good approximation for standard round steel bars. For precise calculations, actual measurements and manufacturer specifications should be used.