← bridge ontologyBridge Asset › Drainage and Protection System
Toe Drain
bridge.drainage_protection_system.toe_drainpublishedEdit
Definition
Drain at the toe of an embankment or protected slope.
- Class kind
- component
- Abstract
- no
- Depth
- 2
- Origin
- reference source
- Ontology
- engineering-reference-book.bridge v1.0.0
- Aliases
- Slope Toe Drain
- Abbreviations
- —
- Last changed
- 7/27/2026, 2:50:05 PM
Identification
- Positive labels
- Toe Drain, Slope Toe Drain
- Negative labels
- —
- Visual features
- drainage symbol or channel/pipe geometry
- Min identity clues
- 2
Evidence
- Preferred views
- plan, section, detail, drainage_schedule
- Evidence types
- view, detail, schedule, note, dimension, level, section_callout
- Source trace required
- yes
Measurements (4)
| Name | Symbol | Unit | Required |
|---|---|---|---|
| Length | L | m/mm | required |
| Width | W | m/mm | required |
| Depth | DPT | m/mm | required |
| Material Type | MAT | — | required |
Relationships (2)
- drains
bridge.superstructure - discharges_to
bridge.drainage_protection_system
BOQ items (1)
| Item code | Formula | Result | Unit |
|---|---|---|---|
bridge.drainage.toe_drain.quantity | L | length | m |
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.