Rebar Weight Calculator in kg

Rebar Weight Formula:

\[ W = \frac{D^2}{162.27} \times L \]

Rebar Weight (kg):

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1. What is a Rebar Weight Calculator?

Definition: This calculator estimates the weight of steel reinforcement bars (rebar) based on diameter and length.

Purpose: It helps construction professionals and engineers quickly determine rebar weight for material estimation and structural calculations.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ W = \frac{D^2}{162.27} \times L \]

Where:

\( W \) — Weight of rebar (kg)
\( D \) — Diameter of rebar (mm)
\( L \) — Length of rebar (m)

Explanation: The formula calculates weight based on the cross-sectional area of the rebar and steel density (derived from the constant 162.27).

3. Importance of Rebar Weight Calculation

Details: Accurate rebar weight estimation is crucial for structural integrity, material procurement, cost estimation, and load calculations in construction projects.

4. Using the Calculator

Tips: Enter the rebar diameter in millimeters and length in meters. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What does the constant 162.27 represent?
A: It's derived from the density of steel (7850 kg/m³) and unit conversions to simplify the formula for mm and m inputs.

Q2: Is this formula accurate for all rebar types?
A: It works for standard carbon steel rebar. For other materials, adjust for different densities.

Q3: How do I calculate weight for multiple rebars?
A: Multiply the result by the number of identical rebars in your project.

Q4: What's the standard rebar diameter range?
A: Typically 6mm to 40mm, with common sizes being 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 32mm.

Q5: Does this include rebar ribs/deformations?
A: The formula provides theoretical weight. Actual weight may vary slightly due to surface deformations.