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Spread Footing
bridge.foundation_system.shallow_foundation.spread_footingpublishedEdit
Definition
Enlarged reinforced-concrete footing distributing load directly to soil or rock.
- Class kind
- component
- Abstract
- no
- Depth
- 3
- Origin
- reference source
- Ontology
- engineering-reference-book.bridge v1.0.0
- Aliases
- Open Foundation, Isolated Footing, Pad Footing
- Abbreviations
- —
- Last changed
- 7/27/2026, 2:50:05 PM
Identification
- Positive labels
- Spread Footing, Open Foundation, Isolated Footing, Pad Footing
- Negative labels
- —
- Visual features
- wide base below pier or abutment; stepped or sloped profile
- Min identity clues
- 2
Evidence
- Preferred views
- plan, section, elevation, foundation_schedule
- Evidence types
- view, detail, schedule, note, dimension, level, section_callout
- Source trace required
- yes
Measurements (6)
| Name | Symbol | Unit | Required |
|---|---|---|---|
| Length | L | m/mm | required |
| Width | W | m/mm | required |
| Height | H | m/mm | required |
| Instance Count | N | count | required |
| Concrete Grade | fck | — | required |
| Founding Level | FL | m | required |
Relationships (2)
- supports
bridge.substructure - founded_on
bridge.ground_system.founding_stratum
BOQ items (1)
| Item code | Formula | Result | Unit |
|---|---|---|---|
bridge.concrete.spread_footing.volume | SUM(L_i * W_i * T_i) * N | volume | m3 |
Facets
- profile
- prismatic, stepped, sloped, combined, strip
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_applicablespread_footing_segments_must_be_evidence_backeddo_not_confuse_with_pile_cap
Provenance
- Basis
- drawing_observed
- Project values included
- no
- vadhavan_port_rob_viaduct_gad
- pages 2, 4, 5, 6, 7, 8, 9, 10, 11
Children (0)
None — this is a leaf class and can be deleted.