StructureCalcsL4X3X1/2
Angle · AISC Shapes Database v15.0 · United States
L4X3X1/2 is a single angle with 102 × 76 mm legs, 12.7 mm thick, weighing 16.5 kg/m. The dimensions below are the published AISC Shapes Database v15.0 values; the drawing is generated from them.
Single angles serve as braces, cleats and connection material. An angle bends about tilted principal axes, so the derived principal values below carry their angle.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Leg length, d | 102 mm | 4.00 in |
| Second leg, b | 76 mm | 3.00 in |
| Thickness, t | 12.7 mm | 0.500 in |
| Mass per metre | 16.5 kg/m | 11.1 lb/ft |
| Area, A | 2,097 mm² | 3.25 in² |
| Second moment, Ix | 2,101,969 mm⁴ | 5.1 in⁴ |
| Second moment, Iy | 998,955 mm⁴ | 2.4 in⁴ |
Derived section properties
Integrated from a square-cornered outline — the fillet radii this family really has are not drawn, so the computed values differ slightly from published. For L4X3X1/2 the computed area is better than 0.01% from published and Ix 0.03%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 30,949 mm³ |
| Elastic modulus, Sy | 18,275 mm³ |
| Plastic modulus, Zx | 52,943 mm³ |
| Plastic modulus, Zy | 33,222 mm³ |
| Radius of gyration, rx | 31.7 mm |
| Radius of gyration, ry | 21.9 mm |
| Principal maximum, Imax (derived) | 2,557,445 mm⁴ |
| Principal minimum, Imin (derived) | 552,618 mm⁴ |
| Principal axis angle, θp | 28.5° |
S is the elastic modulus and Z the plastic modulus, following AISC 360. Australian and British practice reverse the letters.
Neighbouring sizes
Where these numbers come from
Published AISC Shapes Database v15.0 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API