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GI Square Tube Weight Calculator

GI Square Tube Weight Formula:

\[ W = \rho \times (a^2 - b^2) \times L \]

kg/m³
m
m
m

1. What is a GI Square Tube Weight Calculator?

Definition: This calculator estimates the weight of galvanized iron (GI) square tubes based on their dimensions and material density.

Purpose: It helps engineers, construction professionals, and metal workers determine the weight of square tubing for structural calculations and material planning.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ W = \rho \times (a^2 - b^2) \times L \]

Where:

  • \( W \) — Weight of the tube (kilograms)
  • \( \rho \) — Material density (kg/m³)
  • \( a \) — Outer side length (meters)
  • \( b \) — Inner side length (meters)
  • \( L \) — Length of the tube (meters)

Explanation: The formula calculates the cross-sectional area (outer area minus inner area) and multiplies by length and density to get weight.

3. Importance of Tube Weight Calculation

Details: Accurate weight calculations are essential for structural integrity, transportation planning, and cost estimation in construction projects.

4. Using the Calculator

Tips: Enter the material density (default 7850 kg/m³ for steel), outer and inner dimensions in meters, and tube length. All values must be positive, and outer dimension must be larger than inner.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical density for GI tubes?
A: Galvanized iron typically has a density of about 7850 kg/m³, same as steel (the zinc coating adds minimal weight).

Q2: How do I measure the inner and outer dimensions?
A: Outer dimension is the total width across the tube. Inner dimension is the clear space inside (outer dimension minus twice the wall thickness).

Q3: What if my tube is rectangular rather than square?
A: This calculator is for square tubes only. For rectangular tubes, you'd need a different formula accounting for different side lengths.

Q4: Does this account for the zinc coating weight?
A: The zinc coating adds about 3-5% to the weight, which is negligible for most calculations at this density.

Q5: Can I use this for other materials?
A: Yes, just change the density value (e.g., 2700 kg/m³ for aluminum, 8960 kg/m³ for copper).

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