Skip to content

All toolsCalculatorsDuctworkDuctwork Weight & Loading

Ductwork Weight & Loading

Estimating-style ductwork weight and support loading calculator for straights and fittings.

Project

Add duct item

Ready

Shape & geometry

mm
mm
m

Material & thickness

kg/m³
mm
%

Insulation & accessories

kg/item
Schedule & totals—
Total developed area
0.00 m²
Total bare weight
0.00 kg
Total installed weight
0.00 kg
Average line load
—

Item schedule

No items yet — use the builder above to add duct items.

Totals breakdown
ComponentValueNotes
Developed area0.00 m²All schedule rows.
Bare duct weight0.00 kgIncl. fabrication allowance %.
Insulation weight0.00 kgInsulation only.
Cladding weight0.00 kgBased on kg/m² entry.
Accessories0.00 kgPer-row accessories allowance.
Total installed0.00 kgBare + insulation + cladding + accessories.
Avg. line load (kg/m)—Where line length exists.
Avg. line load (kN/m)—Approx. support loading.
Notes

Fittings use practical estimating approximations, not full fabrication development. Bare weight includes fabrication allowance % for flanges, seams, stiffeners and reinforcement. Accessories are entered as a fixed kg allowance per item. kg/m and kN/m are shown where a meaningful line length exists. Verify final support design against actual construction, pressure class and support spacing.

ensign.software · 28 October 2026The Ensign Toolbox