{
  "scope": "Teaching geometry and calculations; project account supplies design approach, not dimensions or measured numerical improvements.",
  "footprint_mm": [
    1200,
    600
  ],
  "plate_thickness_mm": 10,
  "idealized_channel_mm": [
    80,
    40,
    6
  ],
  "mounting_pad_mm": [
    120,
    100,
    12
  ],
  "bolt_holes_diameter_mm": 18,
  "analytical_strip_width_mm": 150,
  "span_mm": 600,
  "load_N": 1000,
  "E_MPa": 200000,
  "centroid_from_plate_underside_mm": -11.733668341708542,
  "composite_I_mm4": 1957798.6130653268,
  "assumption": "Perfect composite action; effective plate width is an assumption. Gussets and pad thickness are excluded from beam I. Welds, local bearing, torsion and overall dynamics require separate verification."
}