{
 "designation": "125x75x4.0RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 11.6,
 "dimensions_mm": {
  "d": 125.0,
  "b": 75.0,
  "t": 4.0,
  "ro": 10.0
 },
 "properties": {
  "A": 1481.0404,
  "Ix": 3053541.3572,
  "Iy": 1387002.2358,
  "Zx": 48856.6617,
  "Zy": 36986.7263,
  "Sx": 60269.7877,
  "Sy": 42443.7772,
  "J": 3156530.7424,
  "C": 62994.8081,
  "Iw": 0.0,
  "rx": 45.4065,
  "ry": 30.6024,
  "mass_calc": 11.6262,
  "surface": 0.3828,
  "surface_t": 33.0026
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 227448.0,
  "phiNs": 599821.3704197338,
  "phiNt": 566497.9609519709,
  "phiMsx": 24409264.01369469,
  "phiMsy": 15146930.686998038,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/125x75x4-0rhs/"
}