L4X3X1/4
L · AISC Shapes Database v15.0 · United States
L4X3X1/4 is a l 101.6 mm deep with a 76.2 mm flange, weighing 8.6 kg/m. The dimensions below are the published AISC Shapes Database v15.0 values; the drawing is generated from them.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 101.6 mm | 4.00 in |
| Flange width, bf | 76.2 mm | 3.00 in |
| Flange thickness, tf | — mm | — in |
| Web thickness, tw | 6.4 mm | 0.250 in |
| Mass per metre | 8.6 kg/m | 5.8 lb/ft |
| Area, A | 1,090 mm² | 1.69 in² |
| Second moment, Ix | 1,152,961 mm⁴ | 2.8 in⁴ |
| Second moment, Iy | 553,588 mm⁴ | 1.3 in⁴ |
Derived section properties
Integrated from a square-cornered outline: no root radius is published for this standard, and that is material a rolled section really has, so these run slightly below the published values. For L4X3X1/4 the computed area is 0.15% 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, Zx | 16,419 mm³ |
| Elastic modulus, Zy | 9,809 mm³ |
| Plastic modulus, Sx | 29,766 mm³ |
| Plastic modulus, Sy | 17,439 mm³ |
| Radius of gyration, rx | 32.5 mm |
| Radius of gyration, ry | 22.8 mm |
| Principal maximum, Imax (derived) | 1,418,761 mm⁴ |
| Principal minimum, Imin (derived) | 297,923 mm⁴ |
| Principal axis angle, θp | 29.2° |
Z is the elastic modulus and S the plastic modulus, following AS 4100. Under AISC 360 the letters are reversed — S is elastic and Z is plastic.
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