StructureCalcsS7X20
American Standard Beam · AISC Shapes Database v15.0 · United States
S7X20 is an American Standard beam of 29.8 kg/m — AISC Shapes Database v15.0 publishes its section properties (A 3,787 mm², Ix 17,564,966 mm⁴) without the full profile dimensions, and the published values are tabulated below.
S-shapes are American Standard beams with narrow, tapered flanges — the oldest rolled I-profile in the catalogue, still used for crane rails and work on older structures.
This series publishes section properties without full profile dimensions, so the shape cannot be drawn to scale.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 29.8 kg/m | 20.0 lb/ft |
| Area, A | 3,787 mm² | 5.87 in² |
| Second moment, Ix | 17,564,966 mm⁴ | 42.2 in⁴ |
| Second moment, Iy | 1,319,454 mm⁴ | 3.2 in⁴ |
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