{
 "designation": "75x50x2.5RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 4.58,
 "dimensions_mm": {
  "d": 75.0,
  "b": 50.0,
  "t": 2.5,
  "ro": 5.0
 },
 "properties": {
  "A": 583.8986,
  "Ix": 449493.0962,
  "Iy": 240008.1674,
  "Zx": 11986.4826,
  "Zy": 9600.3267,
  "Sx": 14591.2632,
  "Sy": 11042.5311,
  "J": 505426.105,
  "C": 15851.2352,
  "Iw": 0.0,
  "rx": 27.7455,
  "ry": 20.2742,
  "mass_calc": 4.5836,
  "surface": 0.2414,
  "surface_t": 52.7107
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 85050.0,
  "phiNs": 236478.91711515596,
  "phiNt": 223341.1994976473,
  "phiMsx": 5909461.57893492,
  "phiMsy": 4030303.886566747,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/75x50x2-5rhs/"
}