{
 "designation": "139.7x5.4CHS",
 "type": "Circular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 17.9,
 "dimensions_mm": {
  "do": 139.7,
  "t": 5.4
 },
 "properties": {
  "A": 2278.3458,
  "Ix": 5144974.78,
  "Iy": 5144974.78,
  "Zx": 73657.4772,
  "Zy": 73657.4772,
  "Sx": 97449.534,
  "Sy": 97449.534,
  "J": 10289949.5599,
  "C": 147314.9543,
  "rx": 47.5206,
  "ry": 47.5206,
  "mass_calc": 17.885,
  "surface": 0.4389,
  "surface_t": 24.5185
 },
 "design_AS4100": {
  "grade": "C250L0",
  "fy": 250,
  "fu": 320,
  "kf": 1.0,
  "phiVv": 184546.01176314763,
  "phiNs": 512627.81045318785,
  "phiNt": 512627.81045318785,
  "phiMsx": 21926145.150000013,
  "phiMsy": 21926145.150000013,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/circular-hollow-sections/139-7x5-4chs/"
}