{
  "revision": "02-thomas-shoring",
  "date": "2026-11-14",
  "deck_length_ft": 38,
  "deck_width_ft": 8,
  "deck_front_x_m": -6.357811,
  "deck_rear_x_m": 5.224589,
  "previous_front_x_m": -5.748212,
  "front_extension_m": 0.6095990000000002,
  "front_post_x_m": -6.27,
  "front_post_inset_in": 3.457125984251981,
  "deck_top_z_m": 4.0204,
  "shore_positions_m": [
    [
      -0.2618115000000001,
      -1.1692,
      3.8604
    ],
    [
      -0.2618115000000001,
      1.1692,
      3.8604
    ]
  ],
  "shore_assumption": "One compression-only vertical shore per longitudinal edge girder at the midpoint between the interior bearers; effective stiffness includes prop, seats, Thomas body structure and its chassis load path.",
  "corners_assumption": "Both rear corners transfer gravity through the rear drop-frame into the chassis rails, with the same analytical sill sections and fixed rail-seat restraint as the front portal. The participating load is solved, not assigned as a fraction.",
  "stiffness_lbf_per_in": [
    0,
    1000,
    5000,
    20000,
    "rigid"
  ],
  "nominal_lbf_per_in": 5000,
  "shore_mass": "New shore and bracket weights remain unassigned; results contain the changed roof frame and plywood only."
}