Steel Beam Sizes / AISC / W-Shapes / W36 / W36x318

W36x318 Steel Beam Dimensions and Properties

AISC Wide flange · v16.0

Analyze in Beam Calculator Back to W-Shapes All W36

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

Units

Section diagram

W36x318 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 318.00 lb/ft 474.00 kg/m
Depth, d 38.20 in 970.00 mm
Flange width, bf 12.40 in 315.00 mm
tw 1.180 in 30.000 mm
tf 2.130 in 54.100 mm
Area 93.40 in² 60,300.00 mm²
Ix 21,200.00 in⁴ 8,820,000,000 mm⁴
Iy 682.00 in⁴ 284,000,000 mm⁴
Sx 1,110.00 in³ 18,200,000 mm³
Sy 110.00 in³ 1,800,000 mm³
Zx 1,300.00 in³ 21,300,000 mm³
Zy 176.00 in³ 2,880,000 mm³
rx 15.10 in 384.00 mm
ry 2.70 in 68.60 mm
J 98.30 in⁴ 40,900,000 mm⁴
Cw 222,000.00 in⁶ 59,600,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W36x318.

Browse W36 series →

Lighter in W36

W36x302

Weight
302.0 lb/ft (-5.0%)
Depth
37.30 in (-2.4%)
Ix
21,100.0 in⁴ (-0.5%)

Heavier in W36

W36x330

Weight
330.0 lb/ft (+3.8%)
Depth
37.70 in (-1.3%)
Ix
23,300.0 in⁴ (+9.9%)

Closest Iₓ in W36

W36x282

Weight
282.0 lb/ft (-11%)
Depth
37.10 in (-2.9%)
Ix
19,600.0 in⁴ (-7.5%)

Similar weight in W33

W33x318

Weight
318.0 lb/ft (0.0%)
Depth
35.20 in (-7.9%)
Ix
19,500.0 in⁴ (-8.0%)
Analyze in Beam Calculator Compare in W-Shapes finder

Source: AISC Shapes Database v16.0 · Methodology