{
 "designation": "33.7x4.0CHS",
 "type": "Circular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 2.93,
 "dimensions_mm": {
  "do": 33.7,
  "t": 4.0
 },
 "properties": {
  "A": 373.2212,
  "Ix": 41898.2793,
  "Iy": 41898.2793,
  "Zx": 2486.5448,
  "Zy": 2486.5448,
  "Sx": 3549.6933,
  "Sy": 3549.6933,
  "J": 83796.5585,
  "C": 4973.0895,
  "rx": 10.5953,
  "ry": 10.5953,
  "mass_calc": 2.9298,
  "surface": 0.1059,
  "surface_t": 36.1337
 },
 "design_AS4100": {
  "grade": "C250L0",
  "fy": 250,
  "fu": 320,
  "kf": 1.0,
  "phiVv": 30230.91778696387,
  "phiNs": 83974.7716304552,
  "phiNt": 83974.7716304552,
  "phiMsx": 798681.0000000002,
  "phiMsy": 798681.0000000002,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/circular-hollow-sections/33-7x4-0chs/"
}