{
  "schema": "gizah-royal-cubit-system",
  "unit": {
    "name": "Royal Cubit",
    "symbol": "RC",
    "value_m": "pi/6",
    "value_cm": "(pi/6)*100",
    "note": "Egyptian royal cubit — basis eenheid, NOT decimaal"
  },
  "bridge": {
    "formula": "6 RC = π meter",
    "note": "Pi is de brug naar meters, niet 0.5236",
    "rc_6": 6,
    "pi_m": 3.14159265358979,
    "rc_to_m": "pi/6",
    "rc3_to_m3": "(pi/6)^3 = pi^3/216",
    "m3_to_rc3": "216/pi^3",
    "decimal_approx": 0.5235987756
  },
  "pyramid": {
    "base_RC": 440,
    "base_m": 230.4,
    "height_orig_RC": 280,
    "height_orig_m": 146.6,
    "height_cur_RC": 265,
    "height_cur_m": 138.8,
    "face_angle_deg": 51.84
  },
  "conversion": {
    "RC_to_m_formula": "π/6",
    "RC3_to_m3_formula": "π³/216",
    "m3_to_RC3_formula": "216/π³",
    "RC3_to_m3_approx": 0.143548,
    "m3_to_RC3_approx": 6.96633,
    "note": "Via pi, niet decimaal"
  },
  "chambers": {
    "kings": {
      "dims_RC": { "L": 20, "W": 10, "H": 11 },
      "dims_m": { "L": 10.47, "W": 5.24, "H": 5.76 },
      "volume_RC3": 2200,
      "volume_m3": 315.81,
      "elevation_RC": 111,
      "elevation_m": 58.1
    },
    "queens": {
      "dims_RC": { "L": 10, "W": 9, "H": 6.5 },
      "dims_m": { "L": 5.24, "W": 4.71, "H": 3.40 },
      "volume_RC3": 585,
      "volume_m3": 83.98,
      "elevation_RC": 82,
      "elevation_m": 42.9
    },
    "gallery": {
      "dims_RC": { "L": 44, "W": 4, "H": 16 },
      "dims_m": { "L": 23.04, "W": 2.09, "H": 8.38 },
      "volume_RC3": 2816,
      "volume_m3": 404.23,
      "elevation_RC": { "bottom": 52, "top": 92 },
      "elevation_m": { "bottom": 27.2, "top": 48.2 }
    },
    "subterranean": {
      "dims_RC": { "L": 10, "W": 7, "H": 7 },
      "dims_m": { "L": 5.24, "W": 3.67, "H": 3.67 },
      "volume_RC3": 490,
      "volume_m3": 70.34,
      "elevation_RC": -19,
      "elevation_m": -10.0
    }
  },
  "shafts": {
    "kings_shafts_RC": { "w": 0.34, "d": 0.40, "h": 0.27 },
    "kings_shafts_cm": { "w": 18, "d": 21, "h": 14 }
  },
  "hexa_grid": {
    "cells": 64,
    "cell_RC": 6,
    "cell_m": 3.1416,
    "note": "1 hexa cell = 6 RC = π meter",
    "total_m": 201.1,
    "total_RC": 384
  },
  "grid_anchor": "0.0.0.0",
  "origin_RC": [0, 0, 0],
  "origin_m": [0, 0, 0],
  "note": "Interne berekening in RC → meters = RC × 0.5236"
}