Round Duct Weight Calculator

Round Duct Weight Formula:

\[ Weight = \pi \times D \times L \times t \times density \]

Diameter (D):

meters

Length (L):

meters

Thickness (t):

meters

Density:

kg/m³

Weight:

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1. What is Round Duct Weight Calculation?

The round duct weight calculation estimates the weight of a cylindrical duct based on its dimensions and material density. This is particularly useful in HVAC systems, industrial ductwork, and construction projects for material estimation and structural planning.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Weight = \pi \times D \times L \times t \times density \]

Where:

\( \pi \) — Mathematical constant (approximately 3.14159)
\( D \) — Diameter of the duct (meters)
\( L \) — Length of the duct (meters)
\( t \) — Thickness of the duct wall (meters)
\( density \) — Material density (kg/m³)

Explanation: The formula calculates the volume of material used in the duct and multiplies it by the material density to determine the total weight.

3. Importance of Weight Calculation

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

4. Using the Calculator

Tips: Enter all dimensions in meters and density in kg/m³. Common material densities: steel (7850 kg/m³), aluminum (2700 kg/m³), copper (8960 kg/m³).

5. Frequently Asked Questions (FAQ)

Q1: Is this calculation accurate for all duct materials?
A: This calculation provides an approximate weight for sheet materials. For precise calculations, consider factors like joints, seams, and fittings.

Q2: Can I use different units for input?
A: The calculator requires meters for dimensions. Convert from other units (e.g., mm to m by dividing by 1000) before entering values.

Q3: How accurate is this calculation for insulated ducts?
A: This calculator only estimates the weight of the duct material itself. For insulated ducts, you need to calculate insulation weight separately.

Q4: Does this account for duct supports and accessories?
A: No, this calculation only estimates the weight of the duct material. Additional components like hangers, flanges, and dampers should be calculated separately.

Q5: What's the typical density for galvanized steel ducts?
A: Galvanized steel typically has a density of approximately 7850 kg/m³.