{
 "designation": "165.1x5.4CHS",
 "type": "Circular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 21.3,
 "dimensions_mm": {
  "do": 165.1,
  "t": 5.4
 },
 "properties": {
  "A": 2709.2467,
  "Ix": 8646984.0754,
  "Iy": 8646984.0754,
  "Zx": 104748.4443,
  "Zy": 104748.4443,
  "Sx": 137774.574,
  "Sy": 137774.574,
  "J": 17293968.1508,
  "C": 209496.8886,
  "rx": 56.4947,
  "ry": 56.4947,
  "mass_calc": 21.2676,
  "surface": 0.5187,
  "surface_t": 24.351
 },
 "design_AS4100": {
  "grade": "C250L0",
  "fy": 250,
  "fu": 320,
  "kf": 1.0,
  "phiVv": 219448.9804808243,
  "phiNs": 609580.5013356231,
  "phiNt": 609580.5013356231,
  "phiMsx": 30999279.150000025,
  "phiMsy": 30999279.150000025,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/circular-hollow-sections/165-1x5-4chs/"
}