Unequal Angles - 30x20x3
Steel unequal angles are L-shaped structural steel bars where one leg is longer than the other. Also known as "unequal angle irons," their asymmetrical design makes them incredibly efficient when a structure needs more strength or surface area in one direction than the other. This unequal shape allows engineers to save weight and reduce material costs compared to using a larger, heavier equal angle. They are commonly used as robust lintels over windows and doors, brackets for heavy brickwork, and bracing elements in roof trusses or steel towers.
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Nearby Sections
Dimensions
| Property | Value |
|---|---|
| A mm | 30 |
| B mm | 20 |
| t mm | 3 |
| kg/m | 1.12 |
| r1 mm | 4 |
| r2 mm | 2 |
Full sortable table: Dimensions table for this category
Section Properties
| Property | Value |
|---|---|
| Dimension - cx | 0.99 |
| Dimension - cy | 0.502 |
| Second Moment of Area (x-x) - cm4 | 1.25 |
| Second Moment of Area (y-y) - cm4 | 0.437 |
| Second Moment of Area (u-u) - cm4 | 1.43 |
| Second Moment of Area (v-v) - cm4 | 0.256 |
| Radius of Gyration (x-x) - cm | 0.935 |
| Radius of Gyration (y-y) - cm | 0.553 |
| Radius of Gyration (u-u) - cm | 1 |
| Radius of Gyration (v-v) - cm | 0.424 |
| Elastic Modulus (x-x) - cm3 | 0.621 |
| Elastic Modulus (y-y) - cm3 | 0.292 |
| Angle Axis x-x to u-u - Tan α | 0.427 |
| Torsional Constant - J cm4 | 0.0486 |
| Equivalent Slenderness Coefficient (Min) - φa | 2.40 |
| Equivalent Slenderness Coefficient (Max) - φa | 3.28 |
| Mono-symmetry Index - ψa | 5.31 |
| Area of Section - cm2 | 1.43 |
Full sortable table: Properties table for this category