StructureCalcsST7.5X25
Structural Tee (from S) · AISC Shapes Database v15.0 · United States
ST7.5X25 is a structural tee cut from an S-shape 190.5 mm deep with a 143.3 mm wide flange, weighing 37.2 kg/m. The dimensions below are the published AISC Shapes Database v15.0 values; the drawing is generated from them.
ST tees are cut from S-shapes and inherit the parent’s tapered flange, which the drawing here reproduces.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 190.5 mm | 7.50 in |
| Flange width, bf | 143.3 mm | 5.64 in |
| Flange thickness, tf | 15.8 mm | 0.622 in |
| Web thickness, tw | 14.0 mm | 0.550 in |
| Mass per metre | 37.2 kg/m | 25.0 lb/ft |
| Area, A | 4,736 mm² | 7.34 in² |
| Second moment, Ix | 16,857,373 mm⁴ | 40.5 in⁴ |
| Second moment, Iy | 3,242,443 mm⁴ | 7.8 in⁴ |
Derived section properties
Integrated from a square-cornered outline — the fillet radii this family really has are not drawn, so the computed values differ slightly from published. For ST7.5X25 the computed area is 0.66% from published and Ix better than 0.01%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 126,694 mm³ |
| Elastic modulus, Sy | 46,363 mm³ |
| Plastic modulus, Zx | 229,878 mm³ |
| Plastic modulus, Zy | 82,087 mm³ |
| Radius of gyration, rx | 59.9 mm |
| Radius of gyration, ry | 26.6 mm |
S is the elastic modulus and Z the plastic modulus, following AISC 360. Australian and British practice reverse the letters.
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