Steel Beam Sizes / AISC / HSS Rectangular / HSS 20x8x3/4

HSS 20x8x3/4 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 20x8x3/4 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 130.33 lb/ft 194.00 kg/m
Height 20.00 in 508.00 mm
Width 8.00 in 203.00 mm
Nominal tw 0.750 in 19.100 mm
Design tw 0.698 in 17.700 mm
Area 35.90 in² 23,200.00 mm²
Ix 1,670.00 in⁴ 695,000,000 mm⁴
Iy 388.00 in⁴ 161,000,000 mm⁴
Sx 167.00 in³ 2,740,000 mm³
Sy 97.10 in³ 1,590,000 mm³
Zx 216.00 in³ 3,540,000 mm³
Zy 112.00 in³ 1,840,000 mm³
rx 6.82 in 173.00 mm
ry 3.29 in 83.60 mm
J 1,060.00 in⁴ 441,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 20x8x3/4.

Lighter in Rectangular HSS

HSS 20x12x5/8

Weight
127.4 lb/ft (-2.3%)
Depth
20.00 in (0.0%)
Ix
1,880.0 in⁴ (+13%)

Heavier in Rectangular HSS

HSS 22x18x1/2

Weight
130.5 lb/ft (+0.1%)
Depth
22.00 in (+10%)
Ix
2,600.0 in⁴ (+56%)

Closest Iₓ in Rectangular HSS

HSS 22x14x3/8

Weight
88.7 lb/ft (-32%)
Depth
22.00 in (+10%)
Ix
1,670.0 in⁴ (0.0%)
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Source: AISC Shapes Database v16.0 · Methodology