Steel Beam Sizes / AISC / HSS Rectangular / HSS 8x3x5/16

HSS 8x3x5/16 Steel Beam Dimensions and Properties

AISC Rectangular HSS · v16.0

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

Units

Section diagram

HSS 8x3x5/16 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 21.21 lb/ft 31.50 kg/m
Height 8.00 in 203.00 mm
Width 3.00 in 76.20 mm
Nominal tw 0.313 in 7.940 mm
Design tw 0.291 in 7.390 mm
Area 5.85 in² 3,770.00 mm²
Ix 42.40 in⁴ 17,600,000 mm⁴
Iy 8.81 in⁴ 3,670,000 mm⁴
Sx 10.60 in³ 174,000.00 mm³
Sy 5.87 in³ 96,200.00 mm³
Zx 13.90 in³ 228,000.00 mm³
Zy 6.84 in³ 112,000.00 mm³
rx 2.69 in 68.30 mm
ry 1.23 in 31.20 mm
J 24.90 in⁴ 10,400,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 8x3x5/16.

Lighter in Rectangular HSS

HSS 10x3x1/4

Weight
20.7 lb/ft (-2.3%)
Depth
10.00 in (+25%)
Ix
63.6 in⁴ (+50%)

Heavier in Rectangular HSS

HSS 10x3-1/2x1/4

Weight
21.6 lb/ft (+1.7%)
Depth
10.00 in (+25%)
Ix
69.1 in⁴ (+63%)

Closest Iₓ in Rectangular HSS

HSS 8x4x1/4

Weight
19.0 lb/ft (-10%)
Depth
8.00 in (0.0%)
Ix
42.5 in⁴ (+0.2%)
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Source: AISC Shapes Database v16.0 · Methodology