{
 "G-G": {
  "concrete_and_hoop_radii": [
   1025.0,
   1250.0
  ],
  "bar_symbol_radius": 1002.5,
  "bar_count": 60,
  "first_deg": 1.475,
  "step_deg": null,
  "tie_lines": [
   2050.0,
   2050.0
  ]
 },
 "J-J": {
  "concrete_and_hoop_radii": [
   1025.0,
   1175.0
  ],
  "bar_symbol_radius": 1002.5,
  "bar_count": 61,
  "first_deg": 1.475,
  "step_deg": 5.9017,
  "tie_lines": [
   2050.0,
   2050.0
  ]
 },
 "hoop_levels_from_table": {
  "count": 48,
  "top": 45342.0,
  "bottom": 33192.0,
  "rule": "shaft top -110, 13@150, 34@300 (+H6 340 +100 = shaft bottom)"
 },
 "tie_levels_from_table": {
  "count": 24,
  "top": 45192.0,
  "bottom": 33192.0,
  "rule": "shaft top -260, 6@300, 17@600 (+H5 340 +100)"
 },
 "chain_check": {
  "hoops": 12700,
  "ties": 12700,
  "H": 12700
 },
 "main_span": {
  "top": 45342.0,
  "bottom": 33192.0,
  "length": 12150.0,
  "P1-1 + P1-2": 12150
 }
}