{
 "designation": "168.3x7.1CHS",
 "type": "Circular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 28.2,
 "dimensions_mm": {
  "do": 168.3,
  "t": 7.1
 },
 "properties": {
  "A": 3595.6156,
  "Ix": 11701863.6301,
  "Iy": 11701863.6301,
  "Zx": 139059.5797,
  "Zy": 139059.5797,
  "Sx": 184615.9277,
  "Sy": 184615.9277,
  "J": 23403727.2603,
  "C": 278119.1594,
  "rx": 57.0481,
  "ry": 57.0481,
  "mass_calc": 28.2256,
  "surface": 0.5287,
  "surface_t": 18.7493
 },
 "design_AS4100": {
  "grade": "C350L0",
  "fy": 350,
  "fu": 430,
  "kf": 1.0,
  "phiVv": 407742.8117487388,
  "phiNs": 1132618.9215242746,
  "phiNt": 1132618.9215242746,
  "phiMsx": 58154017.21499996,
  "phiMsy": 58154017.21499996,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/circular-hollow-sections/168-3x7-1chs/"
}