{
 "designation": "75x50x3.0RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 5.42,
 "dimensions_mm": {
  "d": 75.0,
  "b": 50.0,
  "t": 3.0,
  "ro": 6.0
 },
 "properties": {
  "A": 690.8139,
  "Ix": 521666.6267,
  "Iy": 277616.3459,
  "Zx": 13911.11,
  "Zy": 11104.6538,
  "Sx": 17085.0983,
  "Sy": 12912.4242,
  "J": 592712.9381,
  "C": 18384.3642,
  "Iw": 0.0,
  "rx": 27.48,
  "ry": 20.0467,
  "mass_calc": 5.4229,
  "surface": 0.2397,
  "surface_t": 44.2247
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 100602.0,
  "phiNs": 279779.64064582455,
  "phiNt": 264236.3272766121,
  "phiMsx": 6919464.803555839,
  "phiMsy": 5166732.759222563,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/75x50x3-0rhs/"
}