{
 "designation": "400x300x8.0RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 84.2,
 "dimensions_mm": {
  "d": 400.0,
  "b": 300.0,
  "t": 8.0,
  "ro": 20.0
 },
 "properties": {
  "A": 10724.1617,
  "Ix": 251215016.4089,
  "Iy": 162119177.8426,
  "Zx": 1256075.082,
  "Zy": 1080794.519,
  "Sx": 1486870.4277,
  "Sy": 1224262.3436,
  "J": 311788868.2117,
  "C": 1747242.3368,
  "Iw": 0.0,
  "rx": 153.0527,
  "ry": 122.952,
  "mass_calc": 84.1847,
  "surface": 1.3657,
  "surface_t": 16.2192
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 0.7150775298735551,
  "phiVv": 1492992.0,
  "phiNs": 3105785.8537746533,
  "phiNt": 4101991.843807892,
  "phiMsx": 427234198.5576475,
  "phiMsy": 271882126.5843848,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/400x300x8-0rhs/"
}