{
 "designation": "300x300x12.5SHS",
 "type": "Square Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 109.0,
 "dimensions_mm": {
  "d": 300.0,
  "b": 300.0,
  "t": 12.5,
  "ro": 31.25
 },
 "properties": {
  "A": 13838.2854,
  "Ix": 186591999.9499,
  "Iy": 186591999.9499,
  "Zx": 1243946.6663,
  "Zy": 1243946.6663,
  "Sx": 1471090.7467,
  "Sy": 1471090.7467,
  "J": 305290199.9708,
  "C": 1897935.6719,
  "Iw": 0.0,
  "rx": 116.1196,
  "ry": 116.1196,
  "mass_calc": 108.6305,
  "surface": 1.1463,
  "surface_t": 10.5169
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 1670625.0,
  "phiNs": 5604505.570505174,
  "phiNt": 5293144.149921553,
  "phiMsx": 595791752.3989459,
  "phiMsy": 595791752.3989402,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/square-hollow-sections/300x300x12-5shs/"
}