{
 "designation": "75x50x1.6RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 3.01,
 "dimensions_mm": {
  "d": 75.0,
  "b": 50.0,
  "t": 1.6,
  "ro": 3.2
 },
 "properties": {
  "A": 383.1649,
  "Ix": 305117.5001,
  "Iy": 163917.1687,
  "Zx": 8136.4667,
  "Zy": 6556.6867,
  "Sx": 9750.8576,
  "Sy": 7397.2969,
  "J": 336671.581,
  "C": 10781.1839,
  "Iw": 0.0,
  "rx": 28.2189,
  "ry": 20.6833,
  "mass_calc": 3.0078,
  "surface": 0.2445,
  "surface_t": 81.2311
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 0.7987521751109218,
  "phiVv": 55831.68,
  "phiNs": 123951.77189228198,
  "phiNt": 146560.5553142362,
  "phiMsx": 3344764.261589177,
  "phiMsy": 1764244.3517008214,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/75x50x1-6rhs/"
}