L8X4X5/8
L · AISC Shapes Database v15.0 · United States
L8X4X5/8 is a l 203.2 mm deep with a 101.6 mm flange, weighing 36.0 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 | 203.2 mm | 8.00 in |
| Flange width, bf | 101.6 mm | 4.00 in |
| Flange thickness, tf | — mm | — in |
| Web thickness, tw | 15.9 mm | 0.625 in |
| Mass per metre | 36.0 kg/m | 24.2 lb/ft |
| Area, A | 4,619 mm² | 7.16 in² |
| Second moment, Ix | 19,562,877 mm⁴ | 47.0 in⁴ |
| Second moment, Iy | 3,375,637 mm⁴ | 8.1 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 L8X4X5/8 the computed area is 0.68% from published and Ix 0.17%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Zx | 150,940 mm³ |
| Elastic modulus, Zy | 42,907 mm³ |
| Plastic modulus, Sx | 262,244 mm³ |
| Plastic modulus, Sy | 79,681 mm³ |
| Radius of gyration, rx | 65.2 mm |
| Radius of gyration, ry | 27.1 mm |
| Principal maximum, Imax (derived) | 20,725,477 mm⁴ |
| Principal minimum, Imin (derived) | 2,176,297 mm⁴ |
| Principal axis angle, θp | 14.7° |
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