{
  "basis": "Nominal 1/8-inch steel wall, sharp corners, 7850 kg/m3. Idealized elastic section properties only; actual HSS corner radii, design wall thickness, local buckling, connections and bracing require engineering. No allowable load or safety factor is calculated.",
  "sections": [
    {
      "revision": "v4",
      "transverse_in": 3.0000000000000004,
      "fore_aft_in": 3.0000000000000004,
      "wall_in": 0.125,
      "post_count": 12,
      "post_length_m": 2.6222374999999998,
      "total_post_mass_lb": 505.04718660626105,
      "side_to_side_I_in4": 1.9840494791666667,
      "fore_aft_I_in4": 1.9840494791666667,
      "station_width_in": 104.87401574803151
    },
    {
      "revision": "v5",
      "transverse_in": 2.0,
      "fore_aft_in": 6.000000000000001,
      "wall_in": 0.125,
      "post_count": 12,
      "post_length_m": 2.6222374999999998,
      "total_post_mass_lb": 680.715773251918,
      "side_to_side_I_in4": 1.431966145833334,
      "fore_aft_I_in4": 8.275716145833334,
      "station_width_in": 102.8740157480315
    }
  ],
  "post_mass_change_lb": 175.66858664565694,
  "post_mass_ratio": 1.3478260869565235,
  "side_to_side_stiffness_ratio": 0.7217391304347829,
  "fore_aft_stiffness_ratio": 4.171123872026251,
  "reference": "https://steeltubeinstitute.org/resources/astm-a500/"
}