Abutment

{
  "view": "Elevation",
  "objects": [
    {
      "name": "Deck slab",
      "tag": "",
      "shape": "rectangular",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Shown in longitudinal elevation with reinforcement bars depicted as circles/dots along its length"
    },
    {
      "name": "Abutment/backwall",
      "tag": "",
      "shape": "tapered",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Sloped element at left end of deck"
    },
    {
      "name": "Intermediate bent (pier)",
      "tag": "",
      "shape": "tapered/hammerhead",
      "material": "reinforced concrete",
      "count": 2,
      "note": "Two similar pier shapes with flared tops supporting the slab"
    },
    {
      "name": "Reinforcement bar",
      "tag": "58-600",
      "shape": "circular (bar cross-section, shown as small circles)",
      "material": "reinforced concrete",
      "count": null,
      "note": "Placed 2 between each pair of 400 bars in top of slab over intermediate bents, per callout"
    },
    {
      "name": "Reinforcement bar",
      "tag": "400",
      "shape": "circular (bar cross-section, shown as dots)",
      "material": "reinforced concrete",
      "count": null,
      "note": "Bars in top of slab referenced by the 58-600 callout"
    }
  ],
  "measurements": [
    {
      "label": "58-600",
      "value": "58-600",
      "unit": "",
      "appliesTo": "Reinforcement bar spacing/count callout"
    }
  ],
  "notes": [
    "58-600 (2 BETWEEN EACH PAIR OF 400 BARS IN TOP OF SLAB OVER INTERMEDIATE BENTS)"
  ],
  "labels": [],
  "description": "This crop is a partial longitudinal elevation of a bridge superstructure showing a continuous deck slab spanning over an abutment (left, tapered) and two intermediate bents with flared/hammerhead tops. A leader note calls out reinforcement bar placement ('58-600') indicating two bars placed between each pair of 400 bars in the top of the slab over the intermediate bents. The drawing documents deck slab reinforcement detailing at pier locations."
}

{
  "view": "Elevation",
  "objects": [
    {
      "name": "deck slab",
      "tag": "",
      "shape": "rectangular, elongated",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Shown in longitudinal elevation with reinforcement dots along top and bottom faces"
    },
    {
      "name": "bent",
      "tag": "",
      "shape": "tapered column with flared cap, I-shaped/hourglass profile",
      "material": "reinforced concrete",
      "count": 2,
      "note": "Intermediate bents supporting the slab"
    },
    {
      "name": "abutment/end support",
      "tag": "",
      "shape": "trapezoidal, tapered",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Shown at left end of slab, partially cropped"
    },
    {
      "name": "reinforcement bar",
      "tag": "400",
      "shape": "straight bar, paired",
      "material": "reinforced concrete reinforcement",
      "count": null,
      "note": "Bars in top of slab over intermediate bents, referenced by callout"
    },
    {
      "name": "reinforcement bar",
      "tag": "58-600",
      "shape": "straight bar",
      "material": "reinforced concrete reinforcement",
      "count": 58,
      "note": "Callout indicates 58 bars at 600 spacing, 2 placed between each pair of 400 bars"
    }
  ],
  "measurements": [
    {
      "label": "58-600",
      "value": "58-600",
      "unit": "",
      "appliesTo": "reinforcement bar callout, likely 58 bars at 600 spacing"
    }
  ],
  "notes": [],
  "labels": [
    "58-600 (2 BETWEEN EACH PAIR OF 400 BARS IN TOP OF SLAB OVER INTERMEDIATE BENTS)"
  ],
  "description": "This crop shows a partial longitudinal elevation of a bridge superstructure spanning over two intermediate bents and an end abutment, with the deck slab reinforcement pattern indicated by dot symbols along the top and bottom of the slab. A callout identifies additional top reinforcement bars (58-600) to be placed between pairs of 400 bars in the slab over the intermediate bents. The bents are shown with a tapered, flared-cap profile typical of pier column details."
}