Steel Beam Sizes / AISC / W-Shapes / W40 / W40x277

W40x277 Steel Beam Dimensions and Properties

AISC Wide flange · v16.0

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

Units

Section diagram

W40x277 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 277.00 lb/ft 412.00 kg/m
Depth, d 39.70 in 1,010.00 mm
Flange width, bf 15.80 in 401.00 mm
tw 0.830 in 21.100 mm
tf 1.580 in 40.100 mm
Area 81.50 in² 52,600.00 mm²
Ix 21,900.00 in⁴ 9,120,000,000 mm⁴
Iy 1,040.00 in⁴ 433,000,000 mm⁴
Sx 1,100.00 in³ 18,000,000 mm³
Sy 132.00 in³ 2,160,000 mm³
Zx 1,250.00 in³ 20,500,000 mm³
Zy 204.00 in³ 3,340,000 mm³
rx 16.40 in 417.00 mm
ry 3.58 in 90.90 mm
J 51.50 in⁴ 21,400,000 mm⁴
Cw 379,000.00 in⁶ 102,000,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W40x277.

Browse W40 series →

Lighter in W40

W40x264

Weight
264.0 lb/ft (-4.7%)
Depth
40.00 in (+0.8%)
Ix
19,400.0 in⁴ (-11%)

Heavier in W40

W40x278

Weight
278.0 lb/ft (+0.4%)
Depth
40.20 in (+1.3%)
Ix
20,500.0 in⁴ (-6.4%)

Closest Iₓ in W40

W40x294

Weight
294.0 lb/ft (+6.1%)
Depth
40.40 in (+1.8%)
Ix
21,900.0 in⁴ (0.0%)

Similar weight in W36

W36x282

Weight
282.0 lb/ft (+1.8%)
Depth
37.10 in (-6.5%)
Ix
19,600.0 in⁴ (-11%)
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Source: AISC Shapes Database v16.0 · Methodology