Unit Weight of Circular Pipe Calculator

Pipe Weight Formula:

\[ W = \rho \times \pi \times \frac{OD^2 - ID^2}{4} \]

Weight per Unit Length: kg/m

1. What is Unit Weight of Circular Pipe?

Definition: This calculator determines the weight per unit length of a circular pipe based on its dimensions and material density.

Purpose: It helps engineers, architects, and construction professionals estimate pipe weights for structural calculations and material planning.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ W = \rho \times \pi \times \frac{OD^2 - ID^2}{4} \]

Where:

\( W \) — Weight per unit length (kg/m)
\( \rho \) — Material density (kg/m³)
\( OD \) — Outer diameter (meters)
\( ID \) — Inner diameter (meters)

Explanation: The formula calculates the cross-sectional area of the pipe wall and multiplies it by the material density to get weight per meter.

3. Importance of Pipe Weight Calculation

Details: Accurate weight calculations are crucial for structural support design, transportation planning, and cost estimation in piping systems.

4. Using the Calculator

Tips: Enter material density (default 7850 kg/m³ for steel), outer diameter, and inner diameter (0 for solid rod). All values must be positive with OD > ID.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical density for steel pipes?
A: Carbon steel density is typically 7850 kg/m³. For other materials: aluminum = 2700 kg/m³, copper = 8960 kg/m³.

Q2: How do I calculate total pipe weight?
A: Multiply the result by the pipe length (in meters). For example, 12.56 kg/m × 6m = 75.36 kg.

Q3: What if my pipe is solid (no inner diameter)?
A: Set inner diameter to 0 to calculate weight of a solid rod.

Q4: Can I use different units?
A: The calculator uses meters for dimensions. Convert from inches by multiplying by 0.0254 (1" = 0.0254m).

Q5: How accurate is this calculation?
A: It provides theoretical weight. Actual weight may vary slightly due to manufacturing tolerances and material variations.