Unit Weight Calculator of Hollow Square Pipe

Weight Formula:

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

Weight per Unit Length: kg/m

1. What is a Unit Weight Calculator of Hollow Square Pipe?

Definition: This calculator estimates the weight per unit length of a hollow square pipe based on material density and pipe dimensions.

Purpose: It helps engineers, architects, and construction professionals determine the weight of hollow square pipes for structural calculations and material planning.

2. How Does the Calculator Work?

The calculator uses the formula:

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

Where:

\( W \) — Weight per unit length (kg/m)
\( \rho \) — Material density (kg/m³)
\( a \) — Outer side length (meters)
\( b \) — Inner side length (meters)

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

3. Importance of Weight Calculation

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

4. Using the Calculator

Tips: Enter material density (default 7850 kg/m³ for steel), outer and inner side lengths in meters. Outer dimension must be larger than inner.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical density for steel pipes?
A: Most steel pipes use 7850 kg/m³, but this can vary slightly by alloy composition.

Q2: How do I measure the side lengths?
A: Measure the outer and inner dimensions from one flat side to the opposite flat side.

Q3: What if my pipe is rectangular rather than square?
A: This calculator is for square pipes only. For rectangular pipes, use (a×c - b×d) where a,c are outer dimensions and b,d are inner dimensions.

Q4: Can I use this for non-metal pipes?
A: Yes, just input the correct material density (e.g., ~2700 kg/m³ for aluminum).

Q5: How do I calculate total pipe weight?
A: Multiply the result by the pipe length in meters to get total weight in kg.