{
  "schema": "gizah-rc-points-v2",
  "unit": "royal_cubit",
  "bridge": "6 RC = π meter",
  "pyramid": {
    "base_RC": 440,
    "height_RC": 280,
    "face_angle_deg": 51.84,
    "half_base": 220,
    "slant_height_RC": 356.1,
    "base_height_ratio": "440/280 = 11/7",
    "sum": 720
  },
  "corners_RC": {
    "base": [
      {"label": "Zuid-West",  "x": -220, "y": -220, "z": 0},
      {"label": "Zuid-Oost",  "x":  220, "y": -220, "z": 0},
      {"label": "Noord-Oost", "x":  220, "y":  220, "z": 0},
      {"label": "Noord-West", "x": -220, "y":  220, "z": 0}
    ],
    "apex": {"label": "Apex", "x": 0, "y": 0, "z": 280}
  },
  "elevations_RC": {
    "subterranean": {"z": -19.1, "label": "Subterranean Chamber"},
    "junction":     {"z":  -7.6, "label": "Bifurcatie / Well-start"},
    "ground":       {"z":    0,   "label": "Grondniveau"},
    "entrance":     {"z":   22.9, "label": "Original Entrance"},
    "queens":       {"z":   82.1, "label": "Queen's Chamber"},
    "gg_floor":     {"z":   85.9, "label": "GG Vloer"},
    "gg_ceiling":   {"z":  107.0, "label": "GG Plafond (= φ⁻² × 280)"},
    "kings":        {"z":  110.8, "label": "King's Chamber"},
    "relieving_top":{"z":  129.9, "label": "Relieving Chambers top"},
    "apex":         {"z":  280,   "label": "Apex"}
  },
  "phi_divisions_RC": {
    "phi_0":  {"z": 280,   "label": "φ⁰  × 280"},
    "phi_1":  {"z": 173.0, "label": "φ⁻¹ × 280"},
    "phi_2":  {"z": 107.0, "label": "φ⁻² × 280 ← GG plafond!"},
    "phi_3":  {"z":  66.1, "label": "φ⁻³ × 280"}
  },
  "chambers": {
    "subterranean": {"z_RC": -19.1, "dims_RC": {"w": 10.3, "h": 6.7, "d": 7.3}},
    "queens":       {"z_RC":  82.1, "dims_RC": {"L": 11, "W": 10, "H": 12}, "volume_RC3": 1320},
    "grand_gallery":{"z_RC": "86-107", "dims_RC": {"L": 90, "W": 12, "H": 16}, "volume_RC3": 17280},
    "kings":        {"z_RC": 110.8, "dims_RC": {"L": 21, "W": 10, "H": 12}, "volume_RC3": 2520}
  },
  "angles": {
    "face_angle": 51.84,
    "complement": 38.16,
    "descending": -26,
    "ascending": 26
  },
  "time_cycle": {
    "base_plus_height": 720,
    "meaning": "6! = minuten in 12 uur = halve dag"
  }
}