{
 "designation": "100x50x2.5RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 5.56,
 "dimensions_mm": {
  "d": 100.0,
  "b": 50.0,
  "t": 2.5,
  "ro": 5.0
 },
 "properties": {
  "A": 708.8986,
  "Ix": 912019.242,
  "Iy": 310581.0841,
  "Zx": 18240.3848,
  "Zy": 12423.2434,
  "Sx": 22671.2452,
  "Sy": 14011.2811,
  "J": 753933.6853,
  "C": 21492.0346,
  "Iw": 0.0,
  "rx": 35.8682,
  "ry": 20.9313,
  "mass_calc": 5.5649,
  "surface": 0.2914,
  "surface_t": 52.4128
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 0.855660584727785,
  "phiVv": 115425.0,
  "phiNs": 245663.50559639232,
  "phiNt": 271153.6994976478,
  "phiMsx": 9181854.292874312,
  "phiMsy": 3947572.8937350395,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/100x50x2-5rhs/"
}