Hollow Section Weight Formula:
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Definition: This calculator estimates the weight of stainless steel hollow sections (square or rectangular tubes) based on their dimensions and material density.
Purpose: It helps engineers, fabricators, and construction professionals determine the weight of hollow structural sections for design, transportation, and cost estimation.
The calculator uses the formula:
Where:
Explanation: The formula calculates the cross-sectional area of the steel walls (subtracting the hollow portion) and multiplies by length and density.
Details: Proper weight estimation ensures structural integrity, accurate material costing, and appropriate transportation planning.
Tips: Enter the outer dimension (width/height), wall thickness, length, and density (default 7930 kg/m³ for stainless steel). All values must be > 0.
Q1: Why multiply by 4 in the formula?
A: The factor of 4 accounts for the four sides of a square or rectangular hollow section.
Q2: What's the typical density for stainless steel?
A: Most stainless steel has a density of about 7930 kg/m³, but this can vary slightly by alloy.
Q3: Does this work for circular hollow sections?
A: No, circular tubes require a different formula using π (pi) for the circumference.
Q4: How accurate is this calculation?
A: It provides theoretical weight; actual weight may vary slightly due to manufacturing tolerances.
Q5: Can I use this for other materials?
A: Yes, by changing the density value, but the formula is specifically for hollow sections.