{
 "designation": "Z20019",
 "type": "Z Purlin (Lysaght Zed)",
 "standard": "AS 1397 / AS/NZS 4600",
 "mass_kg_m": 5.74,
 "dimensions_mm": {
  "d": 203.0,
  "e": 79.0,
  "f": 74.0,
  "lip": 18.5,
  "t": 1.9,
  "ri": 5.0
 },
 "properties": {
  "A": 712.8438,
  "Ix": 4516327.6916,
  "Iy": 843008.0227,
  "Zx": 44495.8393,
  "Sx": 51853.0303,
  "Sy": 15010.5974,
  "J": 857.7887,
  "xc": 76.856,
  "Iu": 5017480.1439,
  "Iv": 341855.5703,
  "alpha": 19.1104,
  "ru": 83.8968,
  "rv": 21.899,
  "Zy": 10968.6728,
  "rx": 79.5968,
  "ry": 34.3889,
  "mass_calc": 5.5958,
  "surface": 0.7542,
  "surface_t": 131.3881
 },
 "design_AS4100": {
  "grade": "G450",
  "fy": 450,
  "fu": 480
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/z-purlins/z20019/"
}