← bridge ontologyBridge Asset › Bridge Substructure › Pier System › Pier Shaft
Hollow Pier Shaft
bridge.substructure.pier_system.pier_shaft.hollowpublishedEdit
Definition
Pier shaft with an internal void.
- Class kind
- component
- Abstract
- no
- Depth
- 4
- Origin
- reference source
- Ontology
- engineering-reference-book.bridge v1.0.0
- Aliases
- Hollow Pier, Hollow Column
- Abbreviations
- —
- Last changed
- 7/27/2026, 2:50:05 PM
Identification
- Positive labels
- Hollow Pier Shaft, Hollow Pier, Hollow Column
- Negative labels
- —
- Visual features
- outer and inner closed boundaries in section
- Min identity clues
- 2
Evidence
- Preferred views
- plan, elevation, cross_section, detail
- Evidence types
- view, detail, schedule, note, dimension, level, section_callout
- Source trace required
- yes
Measurements (5)
| Name | Symbol | Unit | Required |
|---|---|---|---|
| Height | H | m/mm | required |
| Outer Diameter | OD | m/mm | required |
| Inner Diameter | ID | m/mm | required |
| Instance Count | N | count | required |
| Concrete Grade | fck | — | required |
Relationships (0)
None declared.
BOQ items (1)
| Item code | Formula | Result | Unit |
|---|---|---|---|
bridge.concrete.hollow_circular_pier.volume | (PI / 4) * (OD^2 - ID^2) * H * N | volume | m3 |
Facets
- shape
- circular, rectangular
Validation
- Blocking if missing
- yes
- Human review allowed
- yes
no_evidence_no_numberretain_document_page_bbox_and_evidence_iddo_not_mix_drawing_revisionsdo_not_average_conflicting_valuesprefer_explicit_labels_over_shape_onlymatch_plan_elevation_and_section_when_applicable
Provenance
- Basis
- engineering_reference
- Project values included
- no
Children (0)
None — this is a leaf class and can be deleted.