Cross-section area, centroid, moment of inertia, section modulus, radius of gyra...

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{ "example": { "Ix": 88709184, "Iy": 6761776, "area": 5808, "asOf": "2026-10-21T05:44:09.238Z", "centroidFromBottom": 150, "centroidFromLeft": 75, "degraded": false, "depth": 300, "dimensions": { "flangeThickness": 12, "height": 300, "webThickness": 8, "width": 150 }, "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.", "notChecked": [ "EDUCATIONAL ESTIMATE, NOT ENGINEERING DESIGN: textbook closed-form formulas with idealised assumptions; no building-code or standard compliance check, no load or resistance factors, no safety verifica…", "fillets, tapered flanges, holes, rolled-section tolerances and the published tables for real rolled shapes (AISC/EN), which differ slightly", "…2 more" ], "parallelAxisParts": null, "plasticModulusX": 670752, "plasticModulusY": 139416, "polarJ": null, "radiusOfGyrationX": 123.586487, "radiusOfGyrationY": 34.1206335, "reasons": [ "Ix is about the horizontal centroidal axis (depth direction vertical). Sx uses the farthest fibre; Z (plastic modulus) is for fully plastic bending.", "EDUCATIONAL ESTIMATE, NOT ENGINEERING DESIGN: textbook closed-form formulas with idealised assumptions; no building-code or standard compliance check, no load or resistance factors, no safety verifica…" ], "sectionModulusX": 591394.56, "sectionModulusXBottom": 591394.56, "sectionModulusXTop": 591394.56, "sectionModulusY": 90157.0133, "shape": "i-beam", "source": "standard geometric section formulas and the parallel axis theorem (Gere and Goodno; Beer and Johnston), computed locally", "summary": "i-beam: area 5808 mm2, Ix 88709184 mm4, Sx 591394.56 mm3, rx 123.586487 mm. Educational estimate only.", "units": { "area": "mm2", "density": "kg/m3", "expansion": "1/degC", "force": "N", "inertia": "mm4", "length": "mm", "moment": "N*mm", "sectionModulus": "mm3", "stress": "MPa (N/mm2)", "system": "si", "temperature": "degC", "torque": "N*mm", "udl": "N/mm (= kN/m)" }, "verdict": "COMPUTED", "warning": "EDUCATIONAL ESTIMATE, NOT ENGINEERING DESIGN: textbook closed-form formulas with idealised assumptions; no building-code or standard compliance check, no load or resistance factors, no safety verifica…", "width": 150 }, "type": "json" }