{
 "designation": "300x300x16.0SHS",
 "type": "Square Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 136.0,
 "dimensions_mm": {
  "d": 300.0,
  "b": 300.0,
  "t": 16.0,
  "ro": 40.0
 },
 "properties": {
  "A": 17296.6467,
  "Ix": 225886439.0314,
  "Iy": 225886439.0314,
  "Zx": 1505909.5935,
  "Zy": 1505909.5935,
  "Sx": 1807601.7388,
  "Sy": 1807601.7388,
  "J": 378253286.25,
  "C": 2312202.3109,
  "Iw": 0.0,
  "rx": 114.2784,
  "ry": 114.2784,
  "mass_calc": 135.7787,
  "surface": 1.1313,
  "surface_t": 8.3185
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 2083968.0,
  "phiNs": 7005141.9267157,
  "phiNt": 6615967.375231495,
  "phiMsx": 732078704.2048866,
  "phiMsy": 732078704.2048883,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/square-hollow-sections/300x300x16-0shs/"
}