{
 "designation": "350x250x12.5RHS",
 "type": "Rectangular Hollow Section",
 "standard": "AS/NZS 1163",
 "mass_kg_m": 109.0,
 "dimensions_mm": {
  "d": 350.0,
  "b": 250.0,
  "t": 12.5,
  "ro": 31.25
 },
 "properties": {
  "A": 13838.2854,
  "Ix": 233443903.1327,
  "Iy": 139069203.4663,
  "Zx": 1333965.1608,
  "Zy": 1112553.6277,
  "Sx": 1621735.3806,
  "Sy": 1289196.1127,
  "J": 287028246.8508,
  "C": 1835953.4509,
  "Iw": 0.0,
  "rx": 129.8823,
  "ry": 100.2477,
  "mass_calc": 108.6305,
  "surface": 1.1463,
  "surface_t": 10.5169
 },
 "design_AS4100": {
  "grade": "C450L0",
  "fy": 450,
  "fu": 500,
  "kf": 1.0,
  "phiVv": 1974375.0,
  "phiNs": 5604505.5705051925,
  "phiNt": 5293144.14992157,
  "phiMsx": 656802829.1615704,
  "phiMsy": 487193772.0033506,
  "ab": -0.5
 },
 "units": "mm, N, N.mm (capacities); see /notation/",
 "source": "https://steelinfo.au/rectangular-hollow-sections/350x250x12-5rhs/"
}