{
 "designation": "76.1x4.5CHS",
 "type": "Circular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 7.95,
 "dimensions_mm": {
  "do": 76.1,
  "t": 4.5
 },
 "properties": {
  "A": 1012.2212,
  "Ix": 651213.7441,
  "Iy": 651213.7441,
  "Zx": 17114.6845,
  "Zy": 17114.6845,
  "Sx": 23099.895,
  "Sy": 23099.895,
  "J": 1302427.4881,
  "C": 34229.3689,
  "rx": 25.3644,
  "ry": 25.3644,
  "mass_calc": 7.9459,
  "surface": 0.2391,
  "surface_t": 30.0724
 },
 "design_AS4100": {
  "grade": "C250L0",
  "fy": 250,
  "fu": 320,
  "kf": 1.0,
  "phiVv": 81989.91339191716,
  "phiNs": 227749.75942199212,
  "phiNt": 227749.75942199212,
  "phiMsx": 5197476.374999997,
  "phiMsy": 5197476.374999997,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/circular-hollow-sections/76-1x4-5chs/"
}