{
  "schema": "piping-schematic-flange-attachment/v1",
  "object_id": "c03-attachment-duties",
  "scope": "Four selected upper-wall section schematics; dimensionless recreation, not detailed weld geometry or rating.",
  "coordinate_units": "diagram units only",
  "shared": {
    "pipe_outer_y": 130,
    "pipe_inner_y": 148,
    "centerline_y": 168
  },
  "forms": [
    {
      "id": "weld-neck",
      "label": "Welding neck",
      "attachment": "Prepared butt weld at the neck",
      "sealing": "Selected mating face and gasket; attachment does not establish this seal",
      "primitives": [
        {
          "kind": "rect",
          "x": 45,
          "y": 130,
          "width": 105,
          "height": 18
        },
        {
          "kind": "polygon",
          "points": [
            [
              150,
              130
            ],
            [
              190,
              130
            ],
            [
              222,
              85
            ],
            [
              222,
              55
            ],
            [
              252,
              55
            ],
            [
              252,
              148
            ],
            [
              150,
              148
            ]
          ]
        }
      ],
      "attachment_x": 150,
      "face_x": 252
    },
    {
      "id": "slip-on",
      "label": "Selected slip-on form",
      "attachment": "Specified front and rear weld construction",
      "sealing": "Selected mating face; pipe-end setback/face must follow actual form",
      "primitives": [
        {
          "kind": "rect",
          "x": 45,
          "y": 130,
          "width": 212,
          "height": 18
        },
        {
          "kind": "rect",
          "x": 222,
          "y": 55,
          "width": 45,
          "height": 75
        },
        {
          "kind": "weld",
          "points": [
            [
              207,
              130
            ],
            [
              222,
              115
            ],
            [
              222,
              130
            ]
          ]
        },
        {
          "kind": "weld",
          "points": [
            [
              257,
              130
            ],
            [
              267,
              130
            ],
            [
              267,
              148
            ],
            [
              257,
              148
            ]
          ]
        }
      ],
      "attachment_x": 222,
      "face_x": 267
    },
    {
      "id": "threaded-seal-weld",
      "label": "Threaded with selected seal weld",
      "attachment": "Engaged threads retain pipe/flange relationship; specified rear weld seals leak path",
      "sealing": "Separate mating face/gasket; no unspecified strength credit for seal weld",
      "primitives": [
        {
          "kind": "rect",
          "x": 45,
          "y": 130,
          "width": 222,
          "height": 18
        },
        {
          "kind": "rect",
          "x": 222,
          "y": 55,
          "width": 45,
          "height": 82
        },
        {
          "kind": "weld",
          "points": [
            [
              207,
              130
            ],
            [
              222,
              115
            ],
            [
              222,
              130
            ]
          ]
        }
      ],
      "attachment_x": 236,
      "face_x": 267
    },
    {
      "id": "lap-stub",
      "label": "Lap flange and stub end",
      "attachment": "Stub butt attachment; loose flange bears on stub shoulder",
      "sealing": "Stub/lapped end supplies selected sealing face; rotating flange is separate part",
      "primitives": [
        {
          "kind": "rect",
          "x": 45,
          "y": 130,
          "width": 105,
          "height": 18
        },
        {
          "kind": "rect",
          "x": 150,
          "y": 130,
          "width": 120,
          "height": 18
        },
        {
          "kind": "rect",
          "x": 255,
          "y": 100,
          "width": 15,
          "height": 48
        },
        {
          "kind": "rect",
          "x": 222,
          "y": 55,
          "width": 33,
          "height": 71
        }
      ],
      "attachment_x": 150,
      "face_x": 270
    }
  ],
  "exclusions": [
    "Actual flange type standard and dimensions",
    "Weld leg/penetration sizes or strength credit",
    "Actual gasket/bolting/material",
    "Interchangeability or current-code permission"
  ],
  "project_acceptance": false
}