AISC Double Angles & Section Properties

AISC 2L shapes are back-to-back double-angle assemblies used for built-up members, braces and truss chords.

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Showing AISC · Double Angles · Imperial

AISC Shapes Database v16.0 · 2,299 sections

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AISC 2L dimensions and section properties in imperial units
Designation Weight (lb/ft) Depth, d (in) Width (in) Area (in²) Ix (in⁴) Sx (in³)
2L12x12x1 156 12 12 46 630 73
2L12x12x1x1-1/2 156 12 12 46 630 73
2L12x12x1x3/4 156 12 12 46 630 73
2L12x12x1-1/8 174 12 12 51.6 700 81.4
2L12x12x1-1/8x1-1/2 174 12 12 51.6 700 81.4
2L12x12x1-1/8x3/4 174 12 12 51.6 700 81.4
2L12x12x1-1/4 193 12 12 56.8 762 89.2
2L12x12x1-1/4x1-1/2 193 12 12 56.8 762 89.2
2L12x12x1-1/4x3/4 193 12 12 56.8 762 89.2
2L12x12x1-3/8 210 12 12 62.2 826 97.2
2L12x12x1-3/8x1-1/2 210 12 12 62.2 826 97.2
2L12x12x1-3/8x3/4 210 12 12 62.2 826 97.2
2L10x10x3/4 98.2 10 10 29 278 38.4
2L10x10x3/4x1-1/2 98.2 10 10 29 278 38.4
2L10x10x3/4x3/4 98.2 10 10 29 278 38.4
2L10x10x7/8 114 10 10 33.6 316 43.8
2L10x10x7/8x1-1/2 114 10 10 33.6 316 43.8
2L10x10x7/8x3/4 114 10 10 33.6 316 43.8
2L10x10x1 129 10 10 38 354 49.6
2L10x10x1x1-1/2 129 10 10 38 354 49.6
2L10x10x1x3/4 129 10 10 38 354 49.6
2L10x10x1-1/8 145 10 10 42.6 392 55.2
2L10x10x1-1/8x1-1/2 145 10 10 42.6 392 55.2
2L10x10x1-1/8x3/4 145 10 10 42.6 392 55.2
2L10x10x1-1/4 160 10 10 46.8 426 60.4
2L10x10x1-1/4x1-1/2 160 10 10 46.8 426 60.4
2L10x10x1-1/4x3/4 160 10 10 46.8 426 60.4
2L10x10x1-3/8 174 10 10 51.2 462 66
2L10x10x1-3/8x1-1/2 174 10 10 51.2 462 66
2L10x10x1-3/8x3/4 174 10 10 51.2 462 66
2L8x4x7/16LLBB 34.4 8 4 10.2 68.4 13.2
2L8x4x7/16x3/4LLBB 34.4 8 4 10.2 68.4 13.2
2L8x4x7/16x3/8LLBB 34.4 8 4 10.2 68.4 13.2
2L8x4x1/2LLBB 39.2 8 4 11.6 77.2 15
2L8x4x1/2x3/4LLBB 39.2 8 4 11.6 77.2 15
2L8x4x1/2x3/8LLBB 39.2 8 4 11.6 77.2 15
2L8x6x7/16LLBB 40.4 8 6 12 78.6 14.1
2L8x6x7/16x3/4LLBB 40.4 8 6 12 78.6 14.1
2L8x6x7/16x3/8LLBB 40.4 8 6 12 78.6 14.1
2L8x4x9/16LLBB 43.8 8 4 13 85.8 16.7
2L8x4x9/16x3/4LLBB 43.8 8 4 13 85.8 16.7
2L8x4x9/16x3/8LLBB 43.8 8 4 13 85.8 16.7
2L8x6x1/2LLBB 46 8 6 13.6 88.8 16
2L8x6x1/2x3/4LLBB 46 8 6 13.6 88.8 16
2L8x6x1/2x3/8LLBB 46 8 6 13.6 88.8 16
2L8x4x5/8LLBB 48.4 8 4 14.3 94 18.4
2L8x4x5/8x3/4LLBB 48.4 8 4 14.3 94 18.4
2L8x4x5/8x3/8LLBB 48.4 8 4 14.3 94 18.4
2L8x6x9/16LLBB 51.4 8 6 15.2 98.8 17.9
2L8x6x9/16x3/4LLBB 51.4 8 6 15.2 98.8 17.9
2L8x6x9/16x3/8LLBB 51.4 8 6 15.2 98.8 17.9
2L8x8x1/2 52.8 8 8 15.7 97.6 16.7
2L8x8x1/2x3/4 52.8 8 8 15.7 97.6 16.7
2L8x8x1/2x3/8 52.8 8 8 15.7 97.6 16.7
2L8x6x5/8LLBB 57 8 6 16.8 108 19.7
2L8x6x5/8x3/4LLBB 57 8 6 16.8 108 19.7
2L8x6x5/8x3/8LLBB 57 8 6 16.8 108 19.7
2L8x4x3/4LLBB 57.4 8 4 17 110 21.8
2L8x4x3/4x3/4LLBB 57.4 8 4 17 110 21.8
2L8x4x3/4x3/8LLBB 57.4 8 4 17 110 21.8
2L8x8x9/16 59.2 8 8 17.5 108 18.7
2L8x8x9/16x3/4 59.2 8 8 17.5 108 18.7
2L8x8x9/16x3/8 59.2 8 8 17.5 108 18.7
2L8x8x5/8 65.4 8 8 19.4 119 20.6
2L8x8x5/8x3/4 65.4 8 8 19.4 119 20.6
2L8x8x5/8x3/8 65.4 8 8 19.4 119 20.6
2L8x4x7/8LLBB 66.2 8 4 19.6 125 25
2L8x4x7/8x3/4LLBB 66.2 8 4 19.6 125 25
2L8x4x7/8x3/8LLBB 66.2 8 4 19.6 125 25
2L8x6x3/4LLBB 67.6 8 6 20 127 23.4
2L8x6x3/4x3/4LLBB 67.6 8 6 20 127 23.4
2L8x6x3/4x3/8LLBB 67.6 8 6 20 127 23.4
2L8x4x1LLBB 74.8 8 4 22.2 139 28
2L8x4x1x3/4LLBB 74.8 8 4 22.2 139 28
2L8x4x1x3/8LLBB 74.8 8 4 22.2 139 28
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Family overview

What are AISC Double Angles?

AISC 2L shapes are back-to-back double-angle assemblies used for built-up members, braces and truss chords.

Designations

Understanding Double Angles designations

Double-angle designations identify the paired angle size and thickness; spacing-dependent minor-axis properties must be selected for the actual connection geometry.

Nominal depth series

Browse by series

Use these series labels to filter the finder table above.

2L

Properties

Double Angles properties explained

These properties are especially relevant when comparing Double Angles. View the complete property glossary.

Symbol Property Units Why it matters
Weight Weight lb/ft, kg/m Mass per unit length; used for self-weight and economy comparisons
Width Leg length (shorter) in, mm Overall width (angle leg or HSS side)
Height Leg length (longer) in, mm Overall depth and clearance
t Leg thickness in, mm Leg thickness for angles
A Cross-sectional area in², mm² Total steel cross-sectional area
Ix Moment of inertia (x) in⁴, mm⁴ Major-axis flexural stiffness
Sx Elastic section modulus (x) in³, mm³ Elastic bending property about the x-axis
rx Radius of gyration (x) in, mm Strong-axis radius of gyration
J Torsional constant in⁴, mm⁴ Torsional constant
Cw Warping constant in⁶, mm⁶ Warping constant for lateral-torsional behaviour

Library summary

Computed Double Angles summary

The current AISC Double Angles library contains 639 sections across 11 nominal-depth series. Published weights range from 3.30 to 210.00 lb/ft , and actual depths range from 1.50 to 12.00 inches .

Lightest section
2L2X2X1/8
Heaviest section
2L12X12X1-3/8
Ix range
0.25 – 826.00 in⁴
Sx range
0.22 – 97.20 in³

Related families

Related AISC families

W-Shapes M-Shapes S-Shapes HP-Shapes Channels MC Channels All AISC families

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Source: AISC Shapes Database v16.0 · Verified July 2026 · View methodology