Drawing to BOQpipeline control sheet
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Track Centerline

1 page · 1 crop · ×1 · other

Matched toCrossing Alignmentbridge.alignment_system.crossing_alignmenton “CL TRACK”

2 not established
The class asks forValueHowFrom
Skew AngleTHETAwants degnot establishedThe construction clearance diagram identifies CL TRACK and gives vertical and horizontal clearance dimensions only. No skew angle is stated or derivable.not found
ChainageCHwants mnot establishedThe reading identifies CL TRACK but provides no chainage/station value. Chainage cannot be derived from the clearance dimensions.not found

Worked out by openai/gpt-5.6-terra-pro from the readings below, which are the source. A derived value shows its arithmetic — check it against the drawing before it is priced.

How the sheets named it

CL TRACK

Every crop it was read in — the drawing beside what the model took off it

Page 1

crop

p01_r05 construction clearance diagram

page 1 · gdot_plan_1_050106c481ea4f86900e478c2e4a98a6_p01_r05_construction_clearance_diagram
Original
p01_r05 construction clearance diagram
{
  "view": "Detail",
  "objects": [
    {
      "name": "construction clearance envelope",
      "tag": "",
      "shape": "rectangular",
      "material": "",
      "count": 1,
      "note": "Clearance diagram centered on track centerline."
    },
    {
      "name": "track centerline",
      "tag": "CL TRACK",
      "shape": "dash-dot vertical line",
      "material": "",
      "count": 1,
      "note": "Shown extending below the clearance envelope."
    },
    {
      "name": "top of high rail",
      "tag": "TOP OF HIGH RAIL",
      "shape": "horizontal line",
      "material": "",
      "count": 1,
      "note": "Aligned with the bottom of the clearance envelope."
    }
  ],
  "measurements": [
    {
      "label": "overall vertical clearance",
      "value": "22'-0\"",
      "unit": "",
      "appliesTo": "construction clearance envelope"
    },
    {
      "label": "horizontal clearance from CL TRACK to left side",
      "value": "13'-0\"",
      "unit": "",
      "appliesTo": "construction clearance envelope"
    },
    {
      "label": "horizontal clearance from CL TRACK to right side",
      "value": "13'-0\"",
      "unit": "",
      "appliesTo": "construction clearance envelope"
    }
  ],
  "notes": [],
  "labels": [
    "CONSTRUCTION CLEARANCE DIAGRAM",
    "NO SCALE"
  ],
  "description": "This crop shows a construction clearance diagram for a track. A rectangular clearance envelope is dimensioned 22'-0\" high and 13'-0\" each side of the CL TRACK, with its bottom at the TOP OF HIGH RAIL."
}

p01_r05 construction clearance diagramDetail

  • track centerlineCL TRACK×1dash-dot vertical lineShown extending below the clearance envelope.

22'-0" overall vertical clearance13'-0" horizontal clearance from CL TRACK to left side13'-0" horizontal clearance from CL TRACK to right side