Steel Beam Sizes / AISC / HSS Rectangular / HSS 12x8x5/16

HSS 12x8x5/16 Steel Beam Dimensions and Properties

AISC Rectangular HSS · v16.0

Analyze in Beam Calculator Back to HSS Rectangular

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

Units

Section diagram

HSS 12x8x5/16 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 40.35 lb/ft 60.10 kg/m
Height 12.00 in 305.00 mm
Width 8.00 in 203.00 mm
Nominal tw 0.313 in 7.940 mm
Design tw 0.291 in 7.390 mm
Area 11.10 in² 7,160.00 mm²
Ix 224.00 in⁴ 93,200,000 mm⁴
Iy 120.00 in⁴ 49,900,000 mm⁴
Sx 37.40 in³ 613,000.00 mm³
Sy 30.10 in³ 493,000.00 mm³
Zx 44.90 in³ 736,000.00 mm³
Zy 34.10 in³ 559,000.00 mm³
rx 4.50 in 114.00 mm
ry 3.29 in 83.60 mm
J 248.00 in⁴ 103,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 12x8x5/16.

Lighter in Rectangular HSS

HSS 14x10x1/4

Weight
39.4 lb/ft (-2.3%)
Depth
14.00 in (+17%)
Ix
310.0 in⁴ (+38%)

Heavier in Rectangular HSS

HSS 10x4x1/2

Weight
42.1 lb/ft (+4.2%)
Depth
10.00 in (-17%)
Ix
129.0 in⁴ (-42%)

Closest Iₓ in Rectangular HSS

HSS 14x6x1/4

Weight
32.6 lb/ft (-19%)
Depth
14.00 in (+17%)
Ix
222.0 in⁴ (-0.9%)
Analyze in Beam Calculator Compare in HSS Rectangular finder

Source: AISC Shapes Database v16.0 · Methodology