Seismic Stopper

{
  "view": "Section",
  "objects": [
    {
      "name": "Abutment (A2) stem/wall",
      "tag": "A2",
      "shape": "rectangular vertical wall",
      "material": "reinforced concrete",
      "count": 1,
      "note": "1500 wide stem shown in section; supports bearing seat and dirt wall"
    },
    {
      "name": "Pile cap",
      "tag": "",
      "shape": "rectangular",
      "material": "reinforced concrete",
      "count": 1,
      "note": "drawn in hidden (dashed) lines below ground line, total width 12300"
    },
    {
      "name": "Bored cast-in-situ pile",
      "tag": "",
      "shape": "circular",
      "material": "reinforced concrete",
      "count": 4,
      "note": "shown in dashed outline with bulb/termination symbol; 1200 dia, spaced 3600"
    },
    {
      "name": "Deck slab / superstructure end",
      "tag": "",
      "shape": "rectangular slab",
      "material": "reinforced concrete (assumed from hatch-free section)",
      "count": 1,
      "note": "230 thick slab over box/girder outline; only the end portion is within the crop"
    },
    {
      "name": "Girder / box section end diaphragm",
      "tag": "",
      "shape": "tapered box section",
      "material": "concrete (not stated)",
      "count": 1,
      "note": "section cut, break line at left indicates the member continues off-crop; 2650 deep"
    },
    {
      "name": "Pot-PTFE bearing",
      "tag": "",
      "shape": "rectangular in section",
      "material": "not stated",
      "count": 1,
      "note": "labelled '(TYP.)'"
    },
    {
      "name": "RCC seismic stopper",
      "tag": "",
      "shape": "rectangular block",
      "material": "reinforced concrete (RCC)",
      "count": 1,
      "note": "located beside bearing on abutment seat"
    },
    {
      "name": "Expansion joint",
      "tag": "",
      "shape": "gap at deck level",
      "material": "not stated",
      "count": 1,
      "note": "centre line of exp. joint marked; 80(SQ.) 92(SK) exp. gap"
    },
    {
      "name": "Dirt wall / back wall with approach slab seat",
      "tag": "",
      "shape": "stepped rectangular",
      "material": "reinforced concrete",
      "count": 1,
      "note": "3500(SQ) dimension across top adjacent to joint"
    },
    {
      "name": "Approach slab / approach pavement wedge",
      "tag": "",
      "shape": "tapered slab",
      "material": "not stated (dotted fill)",
      "count": 1,
      "note": "left-hand tapered element with turned-down end at embankment"
    },
    {
      "name": "Filter media behind abutment",
      "tag": "",
      "shape": "vertical layer",
      "material": "granular filter media",
      "count": 1,
      "note": "labelled 600 THK. FILTER MEDIA"
    },
    {
      "name": "Independent retaining wall",
      "tag": "",
      "shape": "vertical wall",
      "material": "not stated",
      "count": 1,
      "note": "drawn behind abutment with dashed footing at base"
    },
    {
      "name": "Stone pitching",
      "tag": "",
      "shape": "sloping surface layer",
      "material": "stone",
      "count": 1,
      "note": "callout points to slope protection on embankment"
    },
    {
      "name": "Embankment / backfill slope",
      "tag": "",
      "shape": "trapezoidal sloping fill",
      "material": "earth fill",
      "count": 1,
      "note": "slope indicated 1 : 2"
    },
    {
      "name": "Existing/finished ground line",
      "tag": "",
      "shape": "irregular line",
      "material": "",
      "count": 1,
      "note": ""
    }
  ],
  "measurements": [
    {
      "label": "Distance from face to C/L of bearing (square)",
      "value": "1070 (SQ.)",
      "unit": "",
      "appliesTo": "A2 bearing location"
    },
    {
      "label": "Distance from face to C/L of bearing (skew)",
      "value": "1236 (SK.)",
      "unit": "",
      "appliesTo": "A2 bearing location"
    },
    {
      "label": "Expansion gap",
      "value": "80(SQ.) 92(SK)",
      "unit": "",
      "appliesTo": "Expansion joint"
    },
    {
      "label": "Deck slab thickness",
      "value": "230",
      "unit": "",
      "appliesTo": "Deck slab"
    },
    {
      "label": "Superstructure depth",
      "value": "2650",
      "unit": "",
      "appliesTo": "Girder / box section"
    },
    {
      "label": "Dimension at deck top (square)",
      "value": "3500(SQ)",
      "unit": "",
      "appliesTo": "Dirt wall / approach slab seat"
    },
    {
      "label": "Dimension",
      "value": "1500",
      "unit": "",
      "appliesTo": "Girder/diaphragm zone (upper)"
    },
    {
      "label": "Dimension",
      "value": "2850",
      "unit": "",
      "appliesTo": "Girder end to bearing centre line region"
    },
    {
      "label": "Abutment stem thickness",
      "value": "1500",
      "unit": "",
      "appliesTo": "Abutment A2 stem"
    },
    {
      "label": "Slope (vertical : horizontal as marked)",
      "value": "1 : 2",
      "unit": "",
      "appliesTo": "Embankment slope"
    },
    {
      "label": "Edge distance pile cap to pile centre",
      "value": "750",
      "unit": "",
      "appliesTo": "Pile cap / piles (left end)"
    },
    {
      "label": "Pile spacing",
      "value": "3600",
      "unit": "",
      "appliesTo": "Piles (three spaces shown)"
    },
    {
      "label": "Edge distance pile cap to pile centre",
      "value": "750",
      "unit": "",
      "appliesTo": "Pile cap / piles (right end)"
    },
    {
      "label": "Overall pile cap width",
      "value": "12300",
      "unit": "",
      "appliesTo": "Pile cap"
    },
    {
      "label": "Pile diameter",
      "value": "1200",
      "unit": "DIA",
      "appliesTo": "Bored cast-in-situ piles"
    },
    {
      "label": "Filter media thickness",
      "value": "600",
      "unit": "THK.",
      "appliesTo": "Filter media"
    },
    {
      "label": "Drawing scale",
      "value": "1:150",
      "unit": "",
      "appliesTo": "SECTION A-A"
    }
  ],
  "notes": [
    "POT-PTFE BEARING (TYP.)",
    "RCC SEISMIC STOPPER",
    "STONE PITCHING",
    "INDEPENDENT RETAINING WALL",
    "600 THK. FILTER MEDIA",
    "1200 DIA BORED CAST-IN-SITU PILES",
    "(SCALE 1:150)"
  ],
  "labels": [
    "A2",
    "C/L OF EXP. JOINT",
    "C/L OF BRG.",
    "SECTION A-A"
  ],
  "description": "Longitudinal section (SECTION A-A, scale 1:150) through abutment A2 of a bridge, showing the deck slab and box/girder end seated on a pot-PTFE bearing with an RCC seismic stopper, the expansion joint and dirt wall, and the 1500 thick abutment stem carried on a pile cap with four 1200 dia bored cast-in-situ piles at 3600 centres over a 12300 overall width. Behind the abutment the drawing documents 600 thk filter media, an independent retaining wall with its own footing (dashed), embankment fill at 1:2 slope with stone pitching, and a tapered approach slab element at the left. The girder is cut by a break line on the left, so only the abutment end of the superstructure is within this crop; no reinforcement detailing or elevations/stations are shown."
}

{
  "view": "Cross Section",
  "objects": [
    {
      "name": "Pier (RCC column pier)",
      "tag": "P1",
      "shape": "rectangular column, vertical",
      "material": "reinforced concrete",
      "count": 1,
      "note": "1500 wide as drawn; extends from pier cap down through ground line to pile cap"
    },
    {
      "name": "rectangular, two-tier (750 + 750) · ×1 · total depth 1500; width dimensioned 3640(SQ)/4203(SK)",
      "tag": "",
      "shape": "rectangular, two-tier (750 + 750)",
      "material": "reinforced concrete",
      "count": 1,
      "note": "total depth 1500; width dimensioned 3640(SQ)/4203(SK)"
    },
    {
      "name": "Pile cap",
      "tag": "",
      "shape": "rectangular",
      "material": "reinforced concrete",
      "count": 1,
      "note": "shown dashed (hidden/below ground); depth 1800, width 5100"
    },
    {
      "name": "circular · ×2 · 1200 dia, spaced 3600 c/c; shown broken off below pile cap",
      "tag": "",
      "shape": "circular",
      "material": "reinforced concrete",
      "count": 2,
      "note": "1200 dia, spaced 3600 c/c; shown broken off below pile cap"
    },
    {
      "name": "Precast PSC girder",
      "tag": "",
      "shape": "I-girder",
      "material": "precast prestressed concrete",
      "count": 2,
      "note": "labelled TYP.; girder ends on each side of pier, section depth 2650"
    },
    {
      "name": "flat slab · ×1 · 230 thick at edges; deck continuity noted over pier",
      "tag": "",
      "shape": "flat slab",
      "material": "reinforced concrete",
      "count": 1,
      "note": "230 thick at edges; deck continuity noted over pier"
    },
    {
      "name": "Crash barrier",
      "tag": "",
      "shape": "as drawn (profile not detailed in this section)",
      "material": "reinforced concrete",
      "count": null,
      "note": "labelled RCC CRASH BARRIER with leader to deck top"
    },
    {
      "name": "Pot-PTFE bearing",
      "tag": "",
      "shape": "rectangular in section",
      "material": "",
      "count": 2,
      "note": "labelled TYP.; one under each girder line on pier cap"
    },
    {
      "name": "Seismic stopper",
      "tag": "",
      "shape": "rectangular block (hatched)",
      "material": "reinforced concrete",
      "count": null,
      "note": "RCC SEISMIC STOPPER callout to hatched blocks on pier cap"
    },
    {
      "name": "Ground line / existing ground",
      "tag": "",
      "shape": "irregular line with hatching",
      "material": "",
      "count": 1,
      "note": "crossed by pier shaft"
    }
  ],
  "measurements": [
    {
      "label": "Offset from centre line of pier to C/L of bearing (square)",
      "value": "1170(SQ)",
      "unit": "",
      "appliesTo": "bearing location, P1"
    },
    {
      "label": "Offset from centre line of pier to C/L of bearing (skew)",
      "value": "1350(SK)",
      "unit": "",
      "appliesTo": "bearing location, P1"
    },
    {
      "label": "Deck slab thickness (left edge)",
      "value": "230",
      "unit": "",
      "appliesTo": "deck slab"
    },
    {
      "label": "Deck slab thickness (right edge)",
      "value": "230",
      "unit": "",
      "appliesTo": "deck slab"
    },
    {
      "label": "Girder depth / superstructure depth (left)",
      "value": "2650",
      "unit": "",
      "appliesTo": "precast PSC girder"
    },
    {
      "label": "Girder depth / superstructure depth (right)",
      "value": "2650",
      "unit": "",
      "appliesTo": "precast PSC girder"
    },
    {
      "label": "Gap between girder ends at pier (skew)",
      "value": "Pier shaft width (skew) = 1500(SK) — on RCC column pier",
      "unit": "",
      "appliesTo": "deck continuity / girder end gap"
    },
    {
      "label": "Pier cap total depth",
      "value": "1500",
      "unit": "",
      "appliesTo": "pier cap"
    },
    {
      "label": "Pier cap upper tier depth",
      "value": "750",
      "unit": "",
      "appliesTo": "pier cap"
    },
    {
      "label": "Pier cap lower tier depth",
      "value": "750",
      "unit": "",
      "appliesTo": "pier cap"
    },
    {
      "label": "Pier cap width (square)",
      "value": "3640(SQ)",
      "unit": "",
      "appliesTo": "pier cap"
    },
    {
      "label": "Pier cap width (skew)",
      "value": "4203(SK)",
      "unit": "",
      "appliesTo": "pier cap"
    },
    {
      "label": "Pier shaft width",
      "value": "1500",
      "unit": "",
      "appliesTo": "RCC column pier"
    },
    {
      "label": "Pile cap depth",
      "value": "1800",
      "unit": "",
      "appliesTo": "RCC pilecap"
    },
    {
      "label": "Pile cap edge overhang (left)",
      "value": "750",
      "unit": "",
      "appliesTo": "RCC pilecap"
    },
    {
      "label": "Pile cap edge overhang (right)",
      "value": "750",
      "unit": "",
      "appliesTo": "RCC pilecap"
    },
    {
      "label": "Pile spacing (centre to centre)",
      "value": "3600",
      "unit": "",
      "appliesTo": "bored cast-in-situ piles"
    },
    {
      "label": "Pile cap overall width",
      "value": "5100",
      "unit": "",
      "appliesTo": "RCC pilecap"
    },
    {
      "label": "Pile diameter",
      "value": "1200",
      "unit": "DIA",
      "appliesTo": "bored cast-in-situ piles"
    },
    {
      "label": "Drawing scale",
      "value": "1:150",
      "unit": "",
      "appliesTo": "SECTION B-B"
    }
  ],
  "notes": [
    "1200 DIA BORED CAST-IN-SITU PILES",
    "POT-PTFE BEARING (TYP.)",
    "PRECAST PSC GIRDER (TYP.)",
    "DECK CONTINUITY"
  ],
  "labels": [
    "P1",
    "C OF BRG.",
    "RCC CRASH BARRIER",
    "FRL",
    "RCC SEISMIC STOPPER",
    "RCC COLUMN PIER",
    "RCC PILECAP",
    "SECTION B-B",
    "(SCALE 1:150)",
    "(SQ)",
    "(SK)"
  ],
  "description": "Transverse cross section (SECTION B-B, scale 1:150) through pier P1 of a PSC girder bridge, showing the full substructure from deck level down to the piles. It documents the deck slab with crash barrier and deck continuity over the pier, two precast PSC girders on pot-PTFE bearings with RCC seismic stoppers, a two-tier RCC pier cap, a 1500 wide RCC column pier crossing the ground line, and a dashed 1800 deep RCC pile cap 5100 wide founded on two 1200 dia bored cast-in-situ piles at 3600 centres. Girders are cut with break lines at both sides and the piles are shown broken off, so lengths/elevations are not given in this crop."
}

{
  "view": "Cross Section",
  "objects": [
    {
      "name": "Pier (column pier)",
      "tag": "P1",
      "shape": "rectangular column, single shaft",
      "material": "reinforced concrete (RCC)",
      "count": 1,
      "note": "Labelled 'RCC COLUMN PIER'; pier tag P1 in circle at top of section"
    },
    {
      "name": "Pier cap · rectangular, two-tier (2 x 750 deep) · ×1 · Overall 1500 deep, width 3640(SQ)/4203(SK)",
      "tag": "",
      "shape": "rectangular, two-tier (2 x 750 deep)",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Overall 1500 deep, width 3640(SQ)/4203(SK)"
    },
    {
      "name": "Pile cap",
      "tag": "",
      "shape": "rectangular (shown dashed/hidden)",
      "material": "reinforced concrete (RCC)",
      "count": 1,
      "note": "Labelled 'RCC PILECAP', drawn in dashed outline below ground line"
    },
    {
      "name": "Bored cast-in-situ pile · circular · cast-in-situ · ×2 · 1200 dia; only 2 visible in this section, further piles may exist off-section",
      "tag": "",
      "shape": "circular",
      "material": "reinforced concrete, cast-in-situ",
      "count": 2,
      "note": "1200 dia; only 2 visible in this section, further piles may exist off-section"
    },
    {
      "name": "Precast PSC girder",
      "tag": "",
      "shape": "I-girder",
      "material": "precast prestressed concrete",
      "count": 2,
      "note": "Labelled '(TYP.)'; shown cut with break lines each side of pier"
    },
    {
      "name": "Deck slab · flat slab · ×1 · 230 thick; deck continuity noted over pier",
      "tag": "",
      "shape": "flat slab",
      "material": "reinforced concrete",
      "count": 1,
      "note": "230 thick; deck continuity noted over pier"
    },
    {
      "name": "Crash barrier",
      "tag": "",
      "shape": "rectangular in this view",
      "material": "reinforced concrete (RCC)",
      "count": null,
      "note": "Labelled 'RCC CRASH BARRIER'; leader points to deck edge zone, barrier profile not fully drawn in crop"
    },
    {
      "name": "Pot-PTFE bearing",
      "tag": "",
      "shape": "rectangular in section",
      "material": "pot bearing with PTFE sliding surface",
      "count": 2,
      "note": "Labelled '(TYP.)', one under each girder line on pier cap"
    },
    {
      "name": "Seismic stopper",
      "tag": "",
      "shape": "rectangular blocks (hatched)",
      "material": "reinforced concrete (RCC)",
      "count": null,
      "note": "'RCC SEISMIC STOPPER' hatched block(s) on top of pier cap; individual count not clearly separable"
    },
    {
      "name": "Ground line / existing ground",
      "tag": "",
      "shape": "irregular line with hatch ticks",
      "material": "",
      "count": 1,
      "note": "Ground surface crossing pier shaft"
    }
  ],
  "measurements": [
    {
      "label": "Distance C/L of bearing to pier centreline (square)",
      "value": "1170(SQ)",
      "unit": "",
      "appliesTo": "bearing layout, left side"
    },
    {
      "label": "Distance C/L of bearing to pier centreline (skew)",
      "value": "1350(SK)",
      "unit": "",
      "appliesTo": "bearing layout, left side"
    },
    {
      "label": "Distance C/L of bearing to pier centreline (square)",
      "value": "1170(SQ)",
      "unit": "",
      "appliesTo": "bearing layout, right side"
    },
    {
      "label": "Distance C/L of bearing to pier centreline (skew)",
      "value": "1350(SK)",
      "unit": "",
      "appliesTo": "bearing layout, right side"
    },
    {
      "label": "Deck slab thickness (left)",
      "value": "230",
      "unit": "",
      "appliesTo": "deck slab"
    },
    {
      "label": "Deck slab thickness (right)",
      "value": "230",
      "unit": "",
      "appliesTo": "deck slab"
    },
    {
      "label": "Girder depth / superstructure depth below slab",
      "value": "2650",
      "unit": "",
      "appliesTo": "precast PSC girder (left)"
    },
    {
      "label": "Girder depth / superstructure depth below slab",
      "value": "2650",
      "unit": "",
      "appliesTo": "precast PSC girder (right)"
    },
    {
      "label": "Gap / width between girder ends (skew)",
      "value": "Seismic stopper width (skew) = 1500(SK) — on RCC seismic stopper",
      "unit": "",
      "appliesTo": "deck continuity zone over pier"
    },
    {
      "label": "Pier cap total depth",
      "value": "1500",
      "unit": "",
      "appliesTo": "pier cap"
    },
    {
      "label": "Pier cap upper tier depth",
      "value": "750",
      "unit": "",
      "appliesTo": "pier cap"
    },
    {
      "label": "Pier cap lower tier depth",
      "value": "750",
      "unit": "",
      "appliesTo": "pier cap"
    },
    {
      "label": "Pier cap width (square)",
      "value": "3640(SQ)",
      "unit": "",
      "appliesTo": "pier cap"
    },
    {
      "label": "Pier cap width (skew)",
      "value": "4203(SK)",
      "unit": "",
      "appliesTo": "pier cap"
    },
    {
      "label": "Pier shaft width",
      "value": "1500",
      "unit": "",
      "appliesTo": "RCC column pier P1"
    },
    {
      "label": "Pile cap depth",
      "value": "1800",
      "unit": "",
      "appliesTo": "RCC pilecap"
    },
    {
      "label": "Pile cap edge overhang (left)",
      "value": "750",
      "unit": "",
      "appliesTo": "RCC pilecap / pile edge distance"
    },
    {
      "label": "Pile spacing (centre to centre)",
      "value": "3600",
      "unit": "",
      "appliesTo": "bored cast-in-situ piles"
    },
    {
      "label": "Pile cap overall width",
      "value": "5100",
      "unit": "",
      "appliesTo": "RCC pilecap"
    },
    {
      "label": "Pile cap edge overhang (right)",
      "value": "750",
      "unit": "",
      "appliesTo": "RCC pilecap / pile edge distance"
    },
    {
      "label": "Pile diameter",
      "value": "1200 DIA",
      "unit": "",
      "appliesTo": "bored cast-in-situ piles"
    },
    {
      "label": "Dimension at right edge of crop (partial, unattached)",
      "value": "25",
      "unit": "",
      "appliesTo": "unclear – adjacent view cut off at crop edge"
    },
    {
      "label": "Drawing scale",
      "value": "1:150",
      "unit": "",
      "appliesTo": "SECTION B-B"
    }
  ],
  "notes": [
    "RCC CRASH BARRIER",
    "FRL",
    "DECK CONTINUITY",
    "PRECAST PSC GIRDER (TYP.)",
    "RCC SEISMIC STOPPER",
    "POT-PTFE BEARING (TYP.)",
    "RCC COLUMN PIER",
    "RCC PILECAP",
    "1200 DIA BORED CAST-IN-SITU PILES",
    "(SCALE 1:150)"
  ],
  "labels": [
    "P1",
    "C OF BRG.",
    "C OF BRG.",
    "SECTION B-B",
    "(SQ)",
    "(SK)"
  ],
  "description": "This crop is a transverse cross section (SECTION B-B, scale 1:150) through pier P1 of a bridge, showing the complete substructure from superstructure down to foundation. It documents the 230 thick deck slab with deck continuity over the pier, two precast PSC girders (2650 deep) on pot-PTFE bearings set 1170(SQ)/1350(SK) each side of the pier centreline, RCC seismic stoppers, a two-tier pier cap 1500 deep and 3640(SQ)/4203(SK) wide, a 1500 wide RCC column pier extending below ground level, and an 1800 deep RCC pile cap 5100 wide on 1200 dia bored cast-in-situ piles at 3600 centres with 750 edge distances. The right edge of the crop is cut, showing a partial '25' dimension and truncated text belonging to an adjacent view."
}

{
  "view": "Section",
  "objects": [
    {
      "name": "material not stated",
      "tag": "A2",
      "shape": "rectangular wall/stem with dirt wall",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Sectioned abutment stem supporting bearing and carrying deck end; centre line of bearing and expansion joint marked at this location."
    },
    {
      "name": "material not stated",
      "tag": "",
      "shape": "box section with cantilever slab",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Only the end portion of the box girder is shown; web and soffit cut off with break line at left."
    },
    {
      "name": "Expansion joint",
      "tag": "",
      "shape": "vertical gap at deck level",
      "material": "",
      "count": 1,
      "note": "Located on centre line of exp. joint; gap dimension given for square and skew."
    },
    {
      "name": "Pot-PTFE bearing",
      "tag": "",
      "shape": "rectangular in section",
      "material": "",
      "count": 1,
      "note": "Labelled '(TYP.)'; shown on abutment bearing pedestal."
    },
    {
      "name": "RCC seismic stopper",
      "tag": "",
      "shape": "rectangular block",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Callout points to block adjacent to bearing."
    },
    {
      "name": "material not stated",
      "tag": "",
      "shape": "rectangular",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Shown in hidden (dashed) line below ground level."
    },
    {
      "name": "cast-in-situ; material not stated",
      "tag": "",
      "shape": "circular",
      "material": "reinforced concrete (cast-in-situ)",
      "count": 4,
      "note": "Shown dashed below pile cap; 1200 dia per callout."
    },
    {
      "name": "Independent retaining wall",
      "tag": "",
      "shape": "vertical wall in section",
      "material": "",
      "count": 1,
      "note": "Behind abutment, with its own footing shown dashed."
    },
    {
      "name": "Filter media behind abutment/wall",
      "tag": "",
      "shape": "vertical layer",
      "material": "granular filter media",
      "count": 1,
      "note": "Callout '600 THK. FILTER MEDIA'."
    },
    {
      "name": "material not stated",
      "tag": "",
      "shape": "tapered slab",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Hatched slab at left, sloping down to embankment toe."
    },
    {
      "name": "Embankment / backfill slope",
      "tag": "",
      "shape": "inclined (batter shown 1:2)",
      "material": "earth fill",
      "count": 1,
      "note": "Slope indicated by 1 and 2 triangle marks."
    },
    {
      "name": "Stone pitching",
      "tag": "",
      "shape": "irregular stone layer",
      "material": "stone",
      "count": 1,
      "note": "Callout points to stone symbol on slope/ground surface."
    },
    {
      "name": "Existing ground line",
      "tag": "",
      "shape": "irregular line",
      "material": "",
      "count": 1,
      "note": "Shown with hatched ground symbols."
    },
    {
      "name": "material not stated",
      "tag": "",
      "shape": "rectangular",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Supports the pot-PTFE bearing on abutment cap."
    }
  ],
  "measurements": [
    {
      "label": "Distance from grid/centre of bearing (square)",
      "value": "1070 (SQ.) — between C OF BRG. and C OF EXP. JOINT",
      "unit": "",
      "appliesTo": "A2 abutment / C of BRG."
    },
    {
      "label": "Distance (skew)",
      "value": "1236 (SK.) — between C OF BRG. and C OF EXP. JOINT",
      "unit": "",
      "appliesTo": "A2 abutment / C of BRG."
    },
    {
      "label": "Expansion gap",
      "value": "80(SQ.) 92(SK.)",
      "unit": "",
      "appliesTo": "Expansion joint"
    },
    {
      "label": "Deck slab thickness (top dimension)",
      "value": "230",
      "unit": "",
      "appliesTo": "Deck slab"
    },
    {
      "label": "Superstructure depth",
      "value": "2650",
      "unit": "",
      "appliesTo": "Box girder superstructure"
    },
    {
      "label": "Cantilever / dirt wall dimension",
      "value": "3500(SQ)",
      "unit": "",
      "appliesTo": "Deck end / dirt wall"
    },
    {
      "label": "Dimension at girder web/diaphragm",
      "value": "1500",
      "unit": "",
      "appliesTo": "Box girder end"
    },
    {
      "label": "Dimension from web to centre of bearing",
      "value": "2850",
      "unit": "",
      "appliesTo": "Box girder / bearing"
    },
    {
      "label": "Abutment stem thickness",
      "value": "1500",
      "unit": "",
      "appliesTo": "A2 abutment stem"
    },
    {
      "label": "Slope ratio (vertical:horizontal marks)",
      "value": "1 / 2",
      "unit": "",
      "appliesTo": "Embankment slope"
    },
    {
      "label": "Pile cap edge offset (left)",
      "value": "750",
      "unit": "",
      "appliesTo": "Pile cap / pile"
    },
    {
      "label": "Pile spacing",
      "value": "3600",
      "unit": "",
      "appliesTo": "Bored cast-in-situ piles (3 spaces)"
    },
    {
      "label": "Pile cap edge offset (right)",
      "value": "750",
      "unit": "",
      "appliesTo": "Pile cap / pile"
    },
    {
      "label": "Overall pile cap length",
      "value": "12300",
      "unit": "",
      "appliesTo": "Pile cap"
    },
    {
      "label": "Filter media thickness",
      "value": "600",
      "unit": "THK.",
      "appliesTo": "Filter media"
    },
    {
      "label": "Pile diameter",
      "value": "1200",
      "unit": "DIA",
      "appliesTo": "Bored cast-in-situ piles"
    },
    {
      "label": "Scale",
      "value": "1:150",
      "unit": "",
      "appliesTo": "SECTION A-A"
    }
  ],
  "notes": [
    "POT-PTFE BEARING (TYP.)",
    "RCC SEISMIC STOPPER",
    "STONE PITCHING",
    "INDEPENDENT RETAINING WALL",
    "600 THK. FILTER MEDIA",
    "1200 DIA BORED CAST-IN-SITU PILES"
  ],
  "labels": [
    "A2",
    "C OF EXP. JOINT",
    "C OF BRG.",
    "80(SQ.) 92(SK.) EXP.GAP",
    "1070 (SQ.)",
    "1236 (SK.)",
    "3500(SQ)",
    "SECTION A-A",
    "(SCALE 1:150)"
  ],
  "description": "This crop is Section A-A through abutment A2 of a bridge, drawn at 1:150, showing the end of a reinforced concrete box girder deck bearing on the abutment via a pot-PTFE bearing with an RCC seismic stopper and an expansion joint at deck level. Behind the abutment it documents the approach embankment with 1:2 batter, stone pitching, 600 thick filter media, an independent retaining wall with its own footing, and the approach slab at left. Below ground the abutment is founded on a pile cap 12300 long with four 1200 dia bored cast-in-situ piles at 3600 centres and 750 end offsets, drawn in hidden line."
}

{
  "view": "Section",
  "objects": [
    {
      "name": "Pier (marked)",
      "tag": "P1",
      "shape": "circular reference bubble over pier centreline",
      "material": "",
      "count": 1,
      "note": "Pier designation bubble at top of section"
    },
    {
      "name": "Deck slab with deck continuity",
      "tag": "",
      "shape": "horizontal slab",
      "material": "reinforced concrete",
      "count": 1,
      "note": "'DECK CONTINUITY' callout over pier; slab thickness 230 shown both sides"
    },
    {
      "name": "RCC crash barrier",
      "tag": "",
      "shape": "as drawn at deck edge (partial)",
      "material": "reinforced concrete",
      "count": null,
      "note": "Leader points to deck top; barrier profile not fully drawn in this crop"
    },
    {
      "name": "Precast PSC girder",
      "tag": "",
      "shape": "I-girder with tapered web/flange as drawn",
      "material": "precast prestressed concrete",
      "count": 2,
      "note": "Labelled '(TYP.)'; girder ends shown on both sides of pier with break lines"
    },
    {
      "name": "Pot-PTFE bearing",
      "tag": "",
      "shape": "rectangular in section",
      "material": "",
      "count": 2,
      "note": "Labelled '(TYP.)', one under each bearing centreline"
    },
    {
      "name": "RCC seismic stopper",
      "tag": "",
      "shape": "rectangular block (hatched)",
      "material": "reinforced concrete",
      "count": null,
      "note": "Central and outer hatched blocks on pier cap; leader from right side"
    },
    {
      "name": "Pier cap",
      "tag": "",
      "shape": "rectangular, two-layer as drawn (750 + 750)",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Total depth 1500; width 3640(SQ)/4203(SK)"
    },
    {
      "name": "RCC column pier",
      "tag": "",
      "shape": "rectangular/prismatic shaft in section",
      "material": "reinforced concrete",
      "count": 1,
      "note": "1500 wide, extends below existing ground line to pilecap"
    },
    {
      "name": "RCC pilecap",
      "tag": "",
      "shape": "rectangular (shown dashed/hidden)",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Depth 1800, width 5100"
    },
    {
      "name": "Bored cast-in-situ pile",
      "tag": "",
      "shape": "circular 1200 dia",
      "material": "reinforced concrete",
      "count": 2,
      "note": "Shown in section below pilecap, 3600 c/c"
    },
    {
      "name": "Existing ground line",
      "tag": "",
      "shape": "irregular line with hatch ticks",
      "material": "",
      "count": 1,
      "note": "Ground level indicated across the crop"
    },
    {
      "name": "Bearing centreline",
      "tag": "",
      "shape": "vertical centreline",
      "material": "",
      "count": 2,
      "note": "Marked 'C OF BRG.' each side of pier centreline"
    }
  ],
  "measurements": [
    {
      "label": "Distance from pier centreline to bearing centreline (square)",
      "value": "1170(SQ)",
      "unit": "",
      "appliesTo": "C of BRG."
    },
    {
      "label": "Distance from pier centreline to bearing centreline (skew)",
      "value": "1350(SK)",
      "unit": "",
      "appliesTo": "C of BRG."
    },
    {
      "label": "Deck slab thickness",
      "value": "230",
      "unit": "",
      "appliesTo": "Deck slab"
    },
    {
      "label": "Girder depth",
      "value": "2650",
      "unit": "",
      "appliesTo": "Precast PSC girder"
    },
    {
      "label": "Gap / expansion opening between girder ends (skew)",
      "value": "1500 (SK)",
      "unit": "",
      "appliesTo": "Deck continuity region over pier"
    },
    {
      "label": "Pier cap total depth",
      "value": "1500",
      "unit": "",
      "appliesTo": "Pier cap"
    },
    {
      "label": "Pier cap upper layer depth",
      "value": "750",
      "unit": "",
      "appliesTo": "Pier cap"
    },
    {
      "label": "Pier cap lower layer depth",
      "value": "750",
      "unit": "",
      "appliesTo": "Pier cap"
    },
    {
      "label": "Pier cap width (square)",
      "value": "3640(SQ)",
      "unit": "",
      "appliesTo": "Pier cap"
    },
    {
      "label": "Pier cap width (skew)",
      "value": "4203(SK)",
      "unit": "",
      "appliesTo": "Pier cap"
    },
    {
      "label": "Column pier width",
      "value": "1500",
      "unit": "",
      "appliesTo": "RCC column pier"
    },
    {
      "label": "Pilecap depth",
      "value": "1800",
      "unit": "",
      "appliesTo": "RCC pilecap"
    },
    {
      "label": "Pile edge distance (left)",
      "value": "750 (pilecap edge to pile centreline)",
      "unit": "",
      "appliesTo": "RCC pilecap / piles"
    },
    {
      "label": "Pile edge distance (right)",
      "value": "750 (pilecap edge to pile centreline)",
      "unit": "",
      "appliesTo": "RCC pilecap / piles"
    },
    {
      "label": "Pile spacing (centre to centre)",
      "value": "3600",
      "unit": "",
      "appliesTo": "Bored cast-in-situ piles"
    },
    {
      "label": "Pilecap overall width",
      "value": "5100",
      "unit": "",
      "appliesTo": "RCC pilecap"
    },
    {
      "label": "Pile diameter",
      "value": "1200",
      "unit": "DIA",
      "appliesTo": "Bored cast-in-situ piles"
    },
    {
      "label": "Scale",
      "value": "1:150",
      "unit": "",
      "appliesTo": "SECTION B-B"
    }
  ],
  "notes": [
    "1200 DIA BORED CAST-IN-SITU PILES",
    "POT-PTFE BEARING (TYP.)",
    "PRECAST PSC GIRDER (TYP.)"
  ],
  "labels": [
    "P1",
    "C OF BRG.",
    "RCC CRASH BARRIER",
    "FRL",
    "DECK CONTINUITY",
    "RCC SEISMIC STOPPER",
    "RCC COLUMN PIER",
    "RCC PILECAP",
    "SECTION B-B",
    "(SCALE 1:150)"
  ],
  "description": "Transverse section (Section B-B, scale 1:150) through intermediate pier P1 of a PSC girder bridge, showing the deck slab with crash barrier and deck continuity over the pier, two precast PSC girders bearing on pot-PTFE bearings with RCC seismic stoppers, the two-lift RCC pier cap, RCC column pier down through existing ground, and the RCC pilecap on two 1200 dia bored cast-in-situ piles. Dimensions are given in both square (SQ) and skew (SK) values for bearing offsets, deck gap and pier cap width. Girder spans are cut off at break lines each side, so only the pier region is documented in this crop."
}

{
  "view": "Section",
  "objects": [
    {
      "name": "not stated",
      "tag": "P1",
      "shape": "single circular/rectangular column with cap",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Bubble mark 'P1' at top of section identifies the pier location"
    },
    {
      "name": "not stated",
      "tag": "",
      "shape": "flat slab",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Continuity slab shown over pier between adjacent spans"
    },
    {
      "name": "RCC crash barrier",
      "tag": "",
      "shape": "not fully drawn in this crop (leader only)",
      "material": "reinforced concrete",
      "count": null,
      "note": "Called out by leader; barrier profile itself outside crop / not drawn"
    },
    {
      "name": "Precast PSC girder",
      "tag": "",
      "shape": "I-girder with tapered web/flanges",
      "material": "precast prestressed concrete",
      "count": 2,
      "note": "Labelled '(TYP.)'; girder ends of two adjacent spans shown, cut with break lines"
    },
    {
      "name": "Pot-PTFE bearing",
      "tag": "",
      "shape": "rectangular in section",
      "material": "not stated",
      "count": 2,
      "note": "Labelled '(TYP.)', one under each girder line"
    },
    {
      "name": "RCC seismic stopper",
      "tag": "",
      "shape": "rectangular blocks (hatched)",
      "material": "reinforced concrete",
      "count": null,
      "note": "Hatched projections on pier cap adjacent to bearings; individual count not clearly separable"
    },
    {
      "name": "not stated",
      "tag": "",
      "shape": "rectangular, two-tier (750+750)",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Total depth 1500 shown as 750 + 750"
    },
    {
      "name": "RCC column pier",
      "tag": "",
      "shape": "rectangular/circular shaft, 1500 wide",
      "material": "reinforced concrete",
      "count": 1,
      "note": ""
    },
    {
      "name": "Existing/finished ground line",
      "tag": "",
      "shape": "irregular line with hatched ticks",
      "material": "",
      "count": 1,
      "note": "Ground level indicated crossing the pier shaft"
    },
    {
      "name": "RCC pilecap",
      "tag": "",
      "shape": "rectangular (shown dashed/hidden)",
      "material": "reinforced concrete",
      "count": 1,
      "note": "Drawn in hidden line, depth 1800"
    },
    {
      "name": "not stated",
      "tag": "",
      "shape": "circular, 1200 dia",
      "material": "reinforced concrete (cast-in-situ)",
      "count": 2,
      "note": "Shown in hidden line below pilecap"
    }
  ],
  "measurements": [
    {
      "label": "Offset from centreline to C/L of bearing (square)",
      "value": "1170(SQ)",
      "unit": "",
      "appliesTo": "Pot-PTFE bearing, left"
    },
    {
      "label": "Offset from centreline to C/L of bearing (skew)",
      "value": "1350(SK)",
      "unit": "",
      "appliesTo": "Pot-PTFE bearing, left"
    },
    {
      "label": "Offset from centreline to C/L of bearing (square)",
      "value": "1170(SQ)",
      "unit": "",
      "appliesTo": "Pot-PTFE bearing, right"
    },
    {
      "label": "Offset from centreline to C/L of bearing (skew)",
      "value": "1350(SK)",
      "unit": "",
      "appliesTo": "Pot-PTFE bearing, right"
    },
    {
      "label": "Deck slab thickness (left)",
      "value": "230",
      "unit": "",
      "appliesTo": "Deck slab"
    },
    {
      "label": "Deck slab thickness (right)",
      "value": "230",
      "unit": "",
      "appliesTo": "Deck slab"
    },
    {
      "label": "Girder depth (left)",
      "value": "2650",
      "unit": "",
      "appliesTo": "Precast PSC girder"
    },
    {
      "label": "Girder depth (right)",
      "value": "2650",
      "unit": "",
      "appliesTo": "Precast PSC girder"
    },
    {
      "label": "Gap / deck continuity width (skew)",
      "value": "1500 (SK)",
      "unit": "",
      "appliesTo": "Deck continuity between girder ends"
    },
    {
      "label": "Pier cap depth, upper tier",
      "value": "750",
      "unit": "",
      "appliesTo": "Pier cap"
    },
    {
      "label": "Pier cap depth, lower tier",
      "value": "750",
      "unit": "",
      "appliesTo": "Pier cap"
    },
    {
      "label": "Total pier cap depth",
      "value": "1500",
      "unit": "",
      "appliesTo": "Pier cap"
    },
    {
      "label": "Pier cap width (square)",
      "value": "3640(SQ)",
      "unit": "",
      "appliesTo": "Pier cap"
    },
    {
      "label": "Pier cap width (skew)",
      "value": "4203(SK)",
      "unit": "",
      "appliesTo": "Pier cap"
    },
    {
      "label": "Pier shaft width",
      "value": "1500",
      "unit": "",
      "appliesTo": "RCC column pier"
    },
    {
      "label": "Pilecap depth",
      "value": "1800",
      "unit": "",
      "appliesTo": "RCC pilecap"
    },
    {
      "label": "Pile diameter",
      "value": "1200",
      "unit": "DIA",
      "appliesTo": "Bored cast-in-situ piles"
    },
    {
      "label": "Pile spacing (centre to centre)",
      "value": "3600",
      "unit": "",
      "appliesTo": "Bored cast-in-situ piles"
    },
    {
      "label": "Edge offset from pile centre to pilecap edge (left)",
      "value": "750",
      "unit": "",
      "appliesTo": "RCC pilecap"
    },
    {
      "label": "Edge offset from pile centre to pilecap edge (right)",
      "value": "750",
      "unit": "",
      "appliesTo": "RCC pilecap"
    },
    {
      "label": "Overall pilecap width",
      "value": "5100",
      "unit": "",
      "appliesTo": "RCC pilecap"
    },
    {
      "label": "Scale",
      "value": "1:150",
      "unit": "",
      "appliesTo": "SECTION B-B"
    }
  ],
  "notes": [
    "1200 DIA BORED CAST-IN-SITU PILES",
    "(SCALE 1:150)"
  ],
  "labels": [
    "P1",
    "C OF BRG.",
    "C OF BRG.",
    "RCC CRASH BARRIER",
    "FRL",
    "DECK CONTINUITY",
    "PRECAST PSC GIRDER (TYP.)",
    "RCC SEISMIC STOPPER",
    "POT-PTFE BEARING (TYP.)",
    "RCC COLUMN PIER",
    "RCC PILECAP",
    "SECTION B-B"
  ],
  "description": "This crop is a transverse/longitudinal section (SECTION B-B, scale 1:150) through pier P1 of a PSC girder bridge, showing the full substructure from deck to piling. It documents the 230 thick deck slab with deck continuity over the pier, the ends of two 2650 deep precast PSC girders seated on Pot-PTFE bearings with RCC seismic stoppers, a two-tier 1500 deep pier cap (3640 SQ / 4203 SK wide), a 1500 wide RCC column pier extending below ground level, and a hidden-line 1800 deep RCC pilecap 5100 wide founded on two 1200 dia bored cast-in-situ piles at 3600 centres. The RCC crash barrier is called out by leader but its profile is not drawn within this crop, and a partial dimension '25' at the right edge is cut off."
}