{
 "designation": "20x20x1.6SHS",
 "type": "Square Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 0.873,
 "dimensions_mm": {
  "d": 20.0,
  "b": 20.0,
  "t": 1.6,
  "ro": 3.2
 },
 "properties": {
  "A": 111.1649,
  "Ix": 6076.1652,
  "Iy": 6076.1652,
  "Zx": 607.6165,
  "Zy": 607.6165,
  "Sx": 750.6242,
  "Sy": 750.6242,
  "J": 10347.0144,
  "C": 923.5717,
  "Iw": 0.0,
  "rx": 7.3932,
  "ry": 7.3932,
  "mass_calc": 0.8726,
  "surface": 0.0745,
  "surface_t": 85.3444
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 13063.68,
  "phiNs": 45021.76445036782,
  "phiNt": 42520.55531423627,
  "phiMsx": 304002.79384316277,
  "phiMsy": 304002.7938431641,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/square-hollow-sections/20x20x1-6shs/"
}