{
 "designation": "100x50x4.0RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 8.49,
 "dimensions_mm": {
  "d": 100.0,
  "b": 50.0,
  "t": 4.0,
  "ro": 10.0
 },
 "properties": {
  "A": 1081.0404,
  "Ix": 1306725.8974,
  "Iy": 440837.039,
  "Zx": 26134.5179,
  "Zy": 17633.4816,
  "Sx": 33406.7824,
  "Sy": 20580.7719,
  "J": 1131702.1899,
  "C": 31200.0655,
  "Iw": 0.0,
  "rx": 34.7673,
  "ry": 20.1938,
  "mass_calc": 8.4862,
  "surface": 0.2828,
  "surface_t": 33.3133
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 178848.0,
  "phiNs": 437821.3704197314,
  "phiNt": 413497.9609519686,
  "phiMsx": 13529746.883448025,
  "phiMsy": 8232828.49365556,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/100x50x4-0rhs/"
}