{
  "schema": "piping-educational-design-floor/v1",
  "object_id": "c02-design-floor",
  "scope": "Bounded carbon-steel pressure-only design table method; not a universal minimum wall or retirement criterion.",
  "design_floor_rows": [
    {
      "NPS_group": "3/4\u20133",
      "floor_mm": "2.54"
    },
    {
      "NPS_group": "4\u20136",
      "floor_mm": "3.05"
    },
    {
      "NPS_group": "8\u201324",
      "floor_mm": "3.30"
    }
  ],
  "method_limits": {
    "temperature_upper_C": 260,
    "pressure_size_groups": [
      {
        "NPS": "14 and below",
        "upper_kPa": 2400
      },
      {
        "NPS": "16\u201324",
        "upper_kPa": 1380
      }
    ],
    "pressure_reference": "Retain governing basis; not declared locally by this educational table",
    "outside_scope": "Calculated wall evaluates all applicable loads"
  },
  "educational_example": {
    "selected_group": "4\u20136",
    "table_floor_mm": "3.05",
    "assumed_corrosion_allowance_mm": "1.60",
    "scoped_accounting_result_mm": "4.65",
    "ordered_nominal_wall": "not selected",
    "product_tolerance": "actual product specification required"
  },
  "retirement_limit": false,
  "project_acceptance": false
}