← bridge ontologyBridge Asset › Approach and Earthwork System
Foundation Excavation
bridge.approach_earthwork_system.excavationpublishedEdit
Definition
Removal of ground to construct bridge foundations or substructure.
- Class kind
- component
- Abstract
- no
- Depth
- 2
- Origin
- reference source
- Ontology
- engineering-reference-book.bridge v1.0.0
- Aliases
- Structural Excavation, Bridge Excavation
- Abbreviations
- —
- Last changed
- 7/27/2026, 2:50:05 PM
Identification
- Positive labels
- Foundation Excavation, Structural Excavation, Bridge Excavation
- Negative labels
- —
- Visual features
- excavation limits around foundation
- Min identity clues
- 2
Evidence
- Preferred views
- plan, section, method_statement
- Evidence types
- view, detail, schedule, note, dimension, level, section_callout
- Source trace required
- yes
Measurements (5)
| Name | Symbol | Unit | Required |
|---|---|---|---|
| Length | L | m/mm | required |
| Width | W | m/mm | required |
| Excavation Depth | D_exc | m/mm | required |
| Working Space | WS | m/mm | required |
| Instance Count | N | count | required |
Relationships (0)
None declared.
BOQ items (1)
| Item code | Formula | Result | Unit |
|---|---|---|---|
bridge.earthwork.foundation_excavation.volume | (L + 2 * WS) * (W + 2 * WS) * D_exc * N | volume | m3 |
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_applicableworking_space_must_come_from_approved_project_rule
Provenance
- Basis
- engineering_reference
- Project values included
- no
- regional_terminology
- no page list
Children (0)
None — this is a leaf class and can be deleted.