StructureCalcsMT4X3.1
Structural Tee (from M) · AISC Shapes Database v15.0 · United States
MT4X3.1 is a structural tee cut from an M-shape 101.6 mm deep with a 57.9 mm wide flange, weighing 4.6 kg/m. The dimensions below are the published AISC Shapes Database v15.0 values; the drawing is generated from them.
MT tees are cut from M-shapes — light tees for small trusses and frames.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 101.6 mm | 4.00 in |
| Flange width, bf | 57.9 mm | 2.28 in |
| Flange thickness, tf | 4.5 mm | 0.177 in |
| Web thickness, tw | 3.3 mm | 0.129 in |
| Mass per metre | 4.6 kg/m | 3.1 lb/ft |
| Area, A | 588 mm² | 0.91 in² |
| Second moment, Ix | 624,347 mm⁴ | 1.5 in⁴ |
| Second moment, Iy | 73,257 mm⁴ | 0.2 in⁴ |
Derived section properties
Integrated from the section's own outline including the root and toe radii, whose arcs are integrated analytically rather than approximated by facets. For MT4X3.1 the computed area agrees with the published value to 0.01% and Ix to 0.23%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 8,718 mm³ |
| Elastic modulus, Sy | 2,527 mm³ |
| Plastic modulus, Zx | 15,856 mm³ |
| Plastic modulus, Zy | 4,057 mm³ |
| Radius of gyration, rx | 32.6 mm |
| Radius of gyration, ry | 11.2 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