L3X3X1/4
L · AISC Shapes Database v15.0 · United States
L3X3X1/4 is a l 76.2 mm deep with a 76.2 mm flange, weighing 7.3 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 | 76.2 mm | 3.00 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 | 7.3 kg/m | 4.9 lb/ft |
| Area, A | 929 mm² | 1.44 in² |
| Second moment, Ix | 511,965 mm⁴ | 1.2 in⁴ |
| Second moment, Iy | 511,965 mm⁴ | 1.2 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 L3X3X1/4 the computed area is 0.17% from published and Ix 1.16%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Zx | 9,450 mm³ |
| Elastic modulus, Zy | 9,450 mm³ |
| Plastic modulus, Sx | 17,022 mm³ |
| Plastic modulus, Sy | 17,022 mm³ |
| Radius of gyration, rx | 23.6 mm |
| Radius of gyration, ry | 23.6 mm |
| Principal maximum, Imax (derived) | 825,824 mm⁴ |
| Principal minimum, Imin (derived) | 209,960 mm⁴ |
| Principal axis angle, θp | 45.0° |
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