Reference Line

{
  "view": "Detail",
  "objects": [
    {
      "name": "Reinforcement bar group",
      "tag": "510A",
      "shape": "straight, grid-arranged",
      "material": "reinforced steel (rebar)",
      "count": 5,
      "note": "Top horizontal spacing group, 5 bars labeled 5-510A"
    },
    {
      "name": "Reinforcement bar group",
      "tag": "510B",
      "shape": "straight, grid-arranged",
      "material": "reinforced steel (rebar)",
      "count": 4,
      "note": "Top horizontal spacing group, 4 bars labeled 4-510B"
    },
    {
      "name": "Reinforcement bar group",
      "tag": "413A",
      "shape": "straight, grid-arranged",
      "material": "reinforced steel (rebar)",
      "count": 5,
      "note": "Vertical spacing group, 5 bars labeled 5-413A"
    },
    {
      "name": "Reinforcement bar group",
      "tag": "413B",
      "shape": "straight, grid-arranged",
      "material": "reinforced steel (rebar)",
      "count": 3,
      "note": "Vertical spacing group, 3 bars labeled 3-413B, appears within a stepped/offset sub-region of the grid"
    },
    {
      "name": "Reference line B",
      "tag": "B",
      "shape": "linear reference/gridline",
      "material": "",
      "count": 1,
      "note": "Vertical reference line with arrow marker, labeled B at top and bottom"
    },
    {
      "name": "Reference line C",
      "tag": "C",
      "shape": "linear reference/gridline",
      "material": "",
      "count": 1,
      "note": "Vertical reference line with arrow marker, labeled C at top and bottom"
    }
  ],
  "measurements": [
    {
      "label": "Overall width",
      "value": "5'-4 3/4",
      "unit": "ft-in",
      "appliesTo": "overall grid/panel width"
    },
    {
      "label": "Spacing group",
      "value": "5-510A",
      "unit": "",
      "appliesTo": "510A bar group, horizontal span left portion"
    },
    {
      "label": "Spacing group",
      "value": "4-510B",
      "unit": "",
      "appliesTo": "510B bar group, horizontal span right portion"
    },
    {
      "label": "Spacing group",
      "value": "5-413A",
      "unit": "",
      "appliesTo": "413A bar group, vertical span upper portion"
    },
    {
      "label": "Spacing group",
      "value": "3-413B",
      "unit": "",
      "appliesTo": "413B bar group, vertical span lower portion"
    }
  ],
  "notes": [],
  "labels": [
    "DETAIL 2",
    "B",
    "C"
  ],
  "description": "This crop shows a rebar layout detail (labeled DETAIL 2) depicting a grid of reinforcement bars within a slightly tapered rectangular panel, with reference lines B and C marking column locations. Horizontal bar groups are tagged 510A and 510B, and vertical bar groups are tagged 413A and 413B, each with a count and overall dimension shown. This appears to be a partial reinforcement placement detail, likely for a slab, wall, or similar concrete element, showing bar spacing and grouping but without full context of the larger structure."
}