{
 "designation": "273.1x9.3CHS",
 "type": "Circular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 60.5,
 "dimensions_mm": {
  "do": 273.1,
  "t": 9.3
 },
 "properties": {
  "A": 7707.3949,
  "Ix": 67128452.047,
  "Iy": 67128452.047,
  "Zx": 491603.457,
  "Zy": 491603.457,
  "Sx": 647459.211,
  "Sy": 647459.211,
  "J": 134256904.094,
  "C": 983206.9139,
  "rx": 93.3253,
  "ry": 93.3253,
  "mass_calc": 60.5031,
  "surface": 0.858,
  "surface_t": 14.1813
 },
 "design_AS4100": {
  "grade": "C350L0",
  "fy": 350,
  "fu": 430,
  "kf": 1.0,
  "phiVv": 874018.5840139553,
  "phiNs": 2427829.400038765,
  "phiNt": 2427829.400038765,
  "phiMsx": 203949651.46500003,
  "phiMsy": 203949651.46500003,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/circular-hollow-sections/273-1x9-3chs/"
}