Hollow Section Weight Calculator

Hollow Section Weight Formula (Square):

\[ W = (D - t) \times t \times 4 \times L \times \rho \]

For Rectangular Sections:

\[ W = [(A - t) + (B - t)] \times 2 \times t \times L \times \rho \]

Section Shape:

Outer Dimension (D):

Thickness (t):

Length (L):

Density (ρ):

kg/m³

Weight:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is a Hollow Section Weight Calculator?

Definition: This calculator estimates the weight of square or rectangular hollow sections based on their dimensions, thickness, length, and material density.

Purpose: It helps engineers, fabricators, and construction professionals determine the weight of structural hollow sections for design, transportation, and installation purposes.

2. How Does the Calculator Work?

The calculator uses different formulas for square and rectangular sections:

For Square Hollow Sections:

\[ W = (D - t) \times t \times 4 \times L \times \rho \]

For Rectangular Hollow Sections:

\[ W = [(A - t) + (B - t)] \times 2 \times t \times L \times \rho \]

Where:

\( W \) — Weight (kg)
\( D \) — Outer dimension of square section (m)
\( A, B \) — Sides of rectangular section (m)
\( t \) — Wall thickness (m)
\( L \) — Length (m)
\( \rho \) — Material density (kg/m³, default 7850 for steel)

3. Importance of Hollow Section Weight Calculation

Details: Accurate weight calculation is crucial for structural design, load calculations, transportation planning, and cost estimation in construction projects.

4. Using the Calculator

Tips: Select the section shape, enter dimensions, thickness, length, and material density. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical density for steel hollow sections?
A: The default density is 7850 kg/m³ for carbon steel. Adjust for other materials (e.g., 2700 kg/m³ for aluminum).

Q2: How do I calculate weight in tons?
A: Divide the result by 1000 (1 ton = 1000 kg).

Q3: Does this account for corner radii?
A: This is a simplified calculation that assumes sharp corners. For precise calculations with corner radii, use manufacturer data.

Q4: What's the minimum thickness I can enter?
A: The calculator accepts any positive value, but practical hollow sections typically start at 1.5mm thickness.

Q5: Can I calculate weight for multiple pieces?
A: Multiply the result by the number of identical pieces needed.