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Rebar Weight Formula:
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The metric rebar weight formula calculates the weight per meter of reinforcement steel bars based on their diameter. This standard formula is widely used in construction and engineering for material estimation and cost calculations.
The calculator uses the rebar weight formula:
Where:
Explanation: The formula calculates weight per meter by squaring the diameter and multiplying by the constant 0.00617, which accounts for the density of steel and unit conversions.
Details: Accurate rebar weight calculation is essential for construction projects to estimate material requirements, calculate costs, ensure structural integrity, and plan logistics for steel reinforcement.
Tips: Enter the rebar diameter in millimeters. The value must be greater than zero. Common rebar diameters include 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, and 32mm.
Q1: What is the constant 0.00617 derived from?
A: The constant 0.00617 comes from the density of steel (7850 kg/m³) and the conversion factors for calculating the cross-sectional area of a circular bar.
Q2: Are there standard rebar diameters?
A: Yes, common metric rebar diameters follow standard sizes: 6, 8, 10, 12, 16, 20, 25, 32, 40, and 50mm, though availability may vary by region.
Q3: How accurate is this formula?
A: The formula provides theoretical weight based on perfect cylindrical shape. Actual weight may vary slightly due to manufacturing tolerances and surface deformations.
Q4: Can this calculator be used for other steel sections?
A: No, this formula is specifically for round reinforcement bars. Other steel sections (angles, channels, I-beams) have different weight calculation methods.
Q5: How does length affect the total weight?
A: Total weight = Weight per meter × Total length. Multiply the result from this calculator by the total length in meters to get the total weight.