{
 "designation": "250x150x5.0RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 29.9,
 "dimensions_mm": {
  "d": 250.0,
  "b": 150.0,
  "t": 5.0,
  "ro": 12.5
 },
 "properties": {
  "A": 3814.1257,
  "Ix": 32704244.4472,
  "Iy": 14957761.0386,
  "Zx": 261633.9556,
  "Zy": 199436.8138,
  "Sx": 317067.9755,
  "Sy": 223861.6926,
  "J": 32959985.1382,
  "C": 336619.2592,
  "Iw": 0.0,
  "rx": 92.5986,
  "ry": 62.6233,
  "mass_calc": 29.9409,
  "surface": 0.7785,
  "surface_t": 26.0381
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 0.7615998798529188,
  "phiVv": 583200.0,
  "phiNs": 1176459.2452057751,
  "phiNt": 1458903.0639874523,
  "phiMsx": 111426401.55812337,
  "phiMsy": 50169855.71019471,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/250x150x5-0rhs/"
}