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Bearing Centreline Marker

1 page · 1 crop · ×2 · other

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Bearing centreline is a drafting reference line; ontology has no bearing-line reference class.

How the sheets named it

Bearing centreline

Notes on the sheets that carry it

  • p21200 DIA BORED CAST-IN-SITU PILES
  • p2POT-PTFE BEARING (TYP.)
  • p2PRECAST PSC GIRDER (TYP.)

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

Page 2

crop

p02_r09 section through column pier with pile cap and bored piles

page 2 · structural_drawings_pkg_1_9fa14effda074c9fb8ebfc78f519cc6d_p02_r09_section_through_column_pier_with_pile_cap_and_bored_piles
Original
p02_r09 section through column pier with pile cap and bored piles
{
  "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."
}

p02_r09 section through column pier with pile cap and bored pilesSection

  • Bearing centreline×2vertical centrelineMarked 'C OF BRG.' each side of pier centreline

1170(SQ) Distance from pier centreline to bearing centreline (square)1350(SK) Distance from pier centreline to bearing centreline (skew)230 Deck slab thickness2650 Girder depth1500 (SK) Gap / expansion opening between girder ends (skew)1500 Pier cap total depth750 Pier cap upper layer depth750 Pier cap lower layer depth+10 more