{
 "designation": "75x50x5.0RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 8.35,
 "dimensions_mm": {
  "d": 75.0,
  "b": 50.0,
  "t": 5.0,
  "ro": 12.5
 },
 "properties": {
  "A": 1064.1257,
  "Ix": 726019.1291,
  "Iy": 383989.2507,
  "Zx": 19360.5101,
  "Zy": 15359.57,
  "Sx": 24894.4805,
  "Sy": 18780.4098,
  "J": 891167.5057,
  "C": 26370.4438,
  "Iw": 0.0,
  "rx": 26.1203,
  "ry": 18.996,
  "mass_calc": 8.3534,
  "surface": 0.2285,
  "surface_t": 27.3698
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 157950.0,
  "phiNs": 430970.89128083066,
  "phiNt": 407028.06398745114,
  "phiMsx": 10082264.599713657,
  "phiMsy": 7606065.958703223,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/75x50x5-0rhs/"
}