Steel Beam Sizes / CISC / W-Shapes / W840×392

W840×392 Steel Beam Dimensions and Properties

CISC Wide flange · v12.1

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

W840×392 dimensions

Not to scale. Dimensions shown for reference.

Section properties

Symbols match the steel section finder. Imperial and metric values are shown side by side.

Property Imperial Metric
Weight 263.00 lb/ft 392.00 kg/m
Depth, d 34.53 in 877.00 mm
Flange width, bf 15.79 in 401.00 mm
tw 0.870 in 22.100 mm
tf 1.571 in 39.900 mm
Area 77.50 in² 50,000.00 mm²
Ix 15,856.56 in⁴ 6,600,000,000 mm⁴
Iy 1,033.08 in⁴ 430,000,000 mm⁴
Sx 915.36 in³ 15,000,000 mm³
Sy 130.59 in³ 2,140,000 mm³
Zx 1,037.40 in³ 17,000,000 mm³
Zy 201.99 in³ 3,310,000 mm³
rx 14.29 in 363.00 mm
ry 3.65 in 92.70 mm
J 48.77 in⁴ 20,300,000 mm⁴
Cw 280,409.47 in⁶ 75,300,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W840×392.

Lighter in W840

W840×359

Weight
359.0 kg/m (-8.4%)
Depth
868.0 mm (-1.0%)
Ix
5,920,000,000 mm⁴ (-10%)

Heavier in W840

W840×433

Weight
433.0 kg/m (+11%)
Depth
885.0 mm (+0.9%)
Ix
7,360,000,000 mm⁴ (+12%)

Closest Iₓ in W840

W840×329

Weight
329.0 kg/m (-16%)
Depth
862.0 mm (-1.7%)
Ix
5,360,000,000 mm⁴ (-19%)

Similar weight in W920

W920×390

Weight
390.0 kg/m (-0.4%)
Depth
936.0 mm (+6.7%)
Ix
7,420,000,000 mm⁴ (+12%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Not produced in Canada. · Methodology