Square Hollow Section Weight Calculation

Square Hollow Section Formula:

\[ Weight = (Side^2 - Inner\ Side^2) \times Length \times Density \]

Side:

Inner Side:

Length:

Density:

kg/m³

Weight:

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1. What is Square Hollow Section Weight Calculation?

The Square Hollow Section Weight Calculation determines the weight of square hollow structural sections (also known as square tubes) based on their dimensions and material density. This is essential for structural engineering, construction, and material estimation.

2. How Does the Calculator Work?

The calculator uses the following equation:

\[ Weight = (Side^2 - Inner\ Side^2) \times Length \times Density \]

Where:

\( Side \) — Outer side length of the square section (m)
\( Inner\ Side \) — Inner side length of the square section (m)
\( Length \) — Length of the section (m)
\( Density \) — Material density (kg/m³)

Explanation: The equation calculates the cross-sectional area by subtracting the inner square area from the outer square area, then multiplies by length and density to get weight.

3. Importance of Weight Calculation

Details: Accurate weight calculation is crucial for structural design, transportation planning, material cost estimation, and load-bearing capacity analysis in construction projects.

4. Using the Calculator

Tips: Enter all dimensions in meters. The default density is set to 7850 kg/m³ (steel), but can be adjusted for other materials. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are common density values for different materials?
A: Steel: 7850 kg/m³, Aluminum: 2700 kg/m³, Brass: 8530 kg/m³, Copper: 8940 kg/m³.

Q2: How to calculate for rectangular hollow sections?
A: Use formula: (Outer Width × Outer Height - Inner Width × Inner Height) × Length × Density.

Q3: Why is inner side important in the calculation?
A: The inner side determines the hollow portion of the section, which affects the total material volume and thus the weight.

Q4: How accurate is this calculation?
A: The calculation is theoretically accurate for perfect square sections with uniform wall thickness and material density.

Q5: Can this be used for imperial units?
A: Yes, but all dimensions must be consistent (all in inches or feet) and density must be in corresponding units (lb/in³ or lb/ft³).