Complex Culvert
Channel
A complex culvert is a covered channel to convey water below ground level, whose cross section is made of different materials (for example: masonry sides covered with a concrete soffit).
Culverts are distinguished from outfalls because they generally have a larger cross sectional area, and they form part of the main watercourse. Outfalls discharge surface water drainage or water from a smaller watercourse into the main watercourse.
Culverts may carry a water course under a road and there is sometimes confusion as to whether they should be considered to be a bridge. The key test is whether a culvert inspection is required; if not the bridge Subtype should be used. Note that some bridges are constructed from large rectangular concrete box sections, but these should not be considered to be a culvert if they can be visually inspected from the channel bank.
A complex culvert is displayed in AIMS as a polyline showing the centre of the culverted channel.
Element Notes: Where a screen or grid is associated with a headwall it is added a separate asset Screen.
25-02-2020
Elements
An Element Type is a component part of an Asset Type. Each Asset Type (except Asset Complex assets) will comprise of a prescribed set of Element Types. Some Element Types are essential and must be present to define an asset of that Asset Type. Other Element Types are optional, to be included when needed to define a particular Asset Type instance. An individual asset may have more than one instance of each Element Type.
This table lists the Element Types applicable to this Asset Type.
| Element Type | Description | Element Code | Essential | Uniclass 2015 | Updates |
|---|---|---|---|---|---|
| Apron | The scour protection structure laid immediately downstream of a culvert | APN | No | 25-02-2020 | |
| Channel Bed | The bed of a channel | CHB | No | 25-02-2020 | |
| D/S Headwall | The wall supporting the outlet at the downstream end of a culvert or outfall | DSH | No | 25-02-2020 | |
| Left Bank | The left hand edge of a channel when facing downstream | LBK | Yes | 25-02-2020 | |
| Right Bank | The right hand edge of a channel when facing downstream | RBK | Yes | 25-02-2020 | |
| Soffit | The roof of structure such as a complex culvert | SOT | Yes | 25-02-2020 | |
| U/S Headwall | The wall supporting the inlet at the upstream end of a culvert or outfall | UHL | No | 25-02-2020 |
Attributes
An attribute is a particular piece of data that describes a property of an object. Each Asset Type is described by a different set of attributes, although there are some attributes that are common to many Asset Types.
The table below lists the attributes that are applicable to this Asset Type, along with the data profile requirements for each attribute and details of when and how each should be used and delivered.
| Attribute | Format Details | Delivery | Purpose | Mandatory | geoCOBie Mapping | Updates |
|---|---|---|---|---|---|---|
| (inspection) data quality The inspection data quality. Refer to OI 57_06 | Picklist 1 2 3 4 5 | EA7 | Feature.Attribute.Name.InspectionDataQuality | 25-02-2020 | ||
| alt asset ref The alternative asset reference used to cross reference to other data systems | Text Max Length: 30 | EA6 | Feature.Attribute.Name.AltAssetRef | 25-02-2020 | ||
| assessment reason The reason for carrying out the assessment | Picklist Scheduled Inspection Adhoc Inspection Post Incident Inspection Post Remedial Work Assessment | EA7 | Feature.Attribute.Name.AssessmentReason | 25-02-2020 | ||
| assessment reason text Any other comments about the reason for carrying out the assessment | Text Max Length: 200 | EA7 | Feature.Attribute.Name.AssessmentReasonText | 25-02-2020 | ||
| asset end date The end date of the asset. This is only to be populated when asset is withdrawn or fully decommissioned | Date | EA6 | Feature.Attribute.Name.AssetEndDate | 25-02-2020 | ||
| Asset ID Unique system generated unique ID used as a primary key | Number Max: 9,999,999,999 Number of decimal places: 0 Can be negative? false | EA4 | Feature.Attribute.Name.AssetId | 25-02-2020 | ||
| asset maintainer The organisation or individual recognised to be the maintainer of the asset | Picklist Environment Agency Local Authority Internal Drainage Board Private Unknown | EA7 | Feature.Attribute.Name.AssetMaintainer | 25-02-2020 | ||
| asset name The name of the asset if it has one | Text Max Length: 50 | EA3 | Feature.Attribute.Name.AssetName | 25-02-2020 | ||
| asset operator The organisation or individual recognised to be the operator of the asset | Picklist Environment Agency Local Authority Internal Drainage Board Private Unknown | EA7 | Feature.Attribute.Name.AssetOperator | 25-02-2020 | ||
| asset owner The organisation or individual known to be the owner of the asset | Picklist Environment Agency Local Authority Internal Drainage Board Private Unknown | EA7 | Feature.Attribute.Name.AssetOwner | 25-02-2020 | ||
| Asset Ref Unique asset reference code in scheme context assigned by scheme designer eg CC0123 | Text Subtype code CC + sequence number | EA2 | Feature.Name.AssetRef | 25-02-2020 | ||
| asset start date The date the asset becomes operational | Date | EA6 | Feature.Attribute.Name.AssetStartDate | 25-02-2020 | ||
| asset subtype Attribute missing from CAMC (AIMS) Asset Terminology Guide 218_12 List of Attribute Types | Picklist Control Gate Draw-Off Tower Fishpass Hydrobrake In Channel Stoplogs Inspection Chamber Jetty Outfall Screen Spillway Stilling Basin Weir | EA3 | Feature.Attribute.Name.AssetSubtype | 25-02-2020 | ||
| asset type Attribute missing from CAMC (AIMS) Asset Terminology Guide 218_12 List of Attribute Types | Picklist Aids to Navigation Beach structure Buildings Channel Channel Crossing Defence Instrument Land Major Civils Site Structure | EA3 | Feature.Attribute.Name.AssetType | 25-02-2020 | ||
| calculated condition The condition of the asset calculated from the element weightings and conditions configuration | Picklist 1 2 3 4 5 | EA7 | Feature.Attribute.Name.CalculatedCondition | 25-02-2020 | ||
| CDL class Continuous Defence Line class to indicate whether the source of the data is from a survey, the channel edge taken from Mastermap or a connection polyline created to join the two. | Picklist surveyed channel edge connection | EA7 | Feature.Attribute.Name.CdlClass | 25-02-2020 | ||
| channel line - geometry The geometry of the channel | Geometry | EA7 | Feature.Attribute.Name.ChannelLineGeometry | 25-02-2020 | ||
| channel type The type of channel | Picklist natural flow by pass spillway overflow | EA3 | Feature.Attribute.Name.ChannelType | 25-02-2020 | ||
| channel width locatable attribute date The width of the channel at this location | Date | EA7 | Feature.Attribute.Name.ChannelWidthLocatableAttributeDate | 25-02-2020 | ||
| channel width locatable attribute width The width of the channel at this location | Number Max: 999.99 Number of decimal places: 2 Can be negative? false Units: metres | EA7 | Feature.Attribute.Name.ChannelWidthLocatableAttributeWidth | 25-02-2020 | ||
| comments Other comments about the asset | Text Max Length: 2000 | EA3 | Feature.Attribute.Name.Comments | 25-02-2020 | ||
| consequence of culvert failure The level of risk should the culvert become blocked. Refer to OI 166_03_SD03 | Picklist high medium low | EA7 | Feature.Attribute.Name.ConsequenceOfCulvertFailure | 25-02-2020 | ||
| continuous defence line Is this defence to be used to form the continuous defence line for NaFRA? | Picklist Yes No | EA7 | Feature.Attribute.Name.ContinuousDefenceLine | 25-02-2020 | ||
| culvert D/S invert level The downstream invert level of the asset | Number Max: 999,999.999 Number of decimal places: 3 Can be negative? true Units: mAOD | EA6 | Feature.Attribute.Name.CulvertD/SInvertLevel | 25-02-2020 | ||
| culvert inspection completed date The date the most recent internal culvert inspection was completed | Date | EA7 | Feature.Attribute.Name.CulvertInspectionCompletedDateMostRecent | 25-02-2020 | ||
| culvert inspection frequency The internal culvert inspection frequency. Refer to OI 166_03_SD03 | Number Max: 239 Number of decimal places: 0 Can be negative? false Units: months | EA7 | Feature.Attribute.Name.CulvertInspectionFrequency | 25-02-2020 | ||
| culvert U/S invert level The upstream invert level of the asset | Number Max: 999,999.999 Number of decimal places: 3 Can be negative? true Units: mAOD | EA3 | Feature.Attribute.Name.CulvertU/SInvertLevel | 25-02-2020 | ||
| culvert x section area The cross section of the internal area of the asset taken at its minimum | Number Max: 99.99 Number of decimal places: 2 Can be negative? false Units: sq.metres | EA7 | Feature.Attribute.Name.CulvertXSectionArea | 25-02-2020 | ||
| current SOP The Standard of Protection (1:n) that the asset currently provides, if known | Number Max: 9,999.9 Number of decimal places: 1 Can be negative? false Units: years | EA7 | Feature.Attribute.Name.CurrentSop | 25-02-2020 | ||
| current SOP date The date the Current Standard of Protection was appraised | Date | EA7 | Feature.Attribute.Name.CurrentSopDate | 25-02-2020 | ||
| data owner asset ref Asset reference used by the management group, for example: EA NFCDD Reference | Text Max Length: 20 | EA7 | Feature.Attribute.Name.DataOwnerAssetRef | 25-02-2020 | ||
| date of next culvert inspection The date of next internal culvert inspection (CCTV or man entry) | Date | EA7 | Feature.Attribute.Name.DateOfNextCulvertInspection | 25-02-2020 | ||
| decommission status The status of the decommissioning of the asset. Refer to decommissioning guidance | Picklist for consideration being decommissioned decommissioned | EA7 | Feature.Attribute.Name.DecommissionStatus | 25-02-2020 | ||
| decommission status date The date that the decommissioning status was set | Date | EA7 | Feature.Attribute.Name.DecommissionStatusDate | 25-02-2020 | ||
| description A brief description of the asset and / or its construction type | Text Max Length: 200 | EA3 | Feature.Attribute.Name.Description | 25-02-2020 | ||
| design SOP The Standard of Protection (1:n) that the asset was designed to provide | Number Max: 9,999.9 Number of decimal places: 1 Can be negative? false Units: years | EA7 | Feature.Attribute.Name.DesignSop | 25-02-2020 | ||
| design SOP date The date the design Standard of Protection was appraised | Date | EA7 | Feature.Attribute.Name.DesignSopDate | 25-02-2020 | ||
| design SOP DQF The data quality flag for the design Standard of Protection. Refer to OI 57_06 | Picklist 1 2 3 4 5 6 | EA7 | Feature.Attribute.Name.DesignSopDqf | 25-02-2020 | ||
| document links The document - Please note this may not be the most up-to-date version. | Link | EA6 | Feature.Attribute.Name.DocumentLinks | 25-02-2020 | ||
| effective date The effective date of the inspection. Refer to Inspection documentation on KPI881 | Date | EA7 | Feature.Attribute.Name.EffectiveDate | 25-02-2020 | ||
| FWM Act designated Is the asset designated under the Floods and Water Management Act 2010? | Picklist Yes No | EA6 | Feature.Attribute.Name.FwmActDesignated | 25-02-2020 | ||
| inspected by The inspector who has inspected the asset | Text Max Length: 20 | EA7 | Feature.Attribute.Name.InspectedBy | 25-02-2020 | ||
| inspection comments The inspection comments from the asset inspection | Text Max Length: 1000 | EA7 | Feature.Attribute.Name.InspectionComments | 25-02-2020 | ||
| inspection date The date of the inspection | Date | EA7 | Feature.Attribute.Name.InspectionDate | 25-02-2020 | ||
| inspection purpose The purpose for the inspection. (Definition from 'Purpose' attribute in OI 218_12) Attribute missing from CAMC (AIMS) Asset Terminology Guide 218_12 | Picklist FCERM Protection | EA7 | Feature.Attribute.Name.InspectionPurpose | 25-02-2020 | ||
| interested parties The details for any interest parties | Link | EA6 | Feature.Attribute.Name.InterestedParties | 25-02-2020 | ||
| last culvert inspection condition The condition of the culvert when it had its last internal inspection | Picklist 1 2 3 4 5 | EA7 | Feature.Attribute.Name.LastCulvertInspectionCondition | 25-02-2020 | ||
| length The length of the asset calculated from its geometry | Number Max: 999,999.999 Number of decimal places: 3 Can be negative? false Units: metres | EA7 | Feature.Attribute.Name.Length | 25-02-2020 | ||
| level of integration Only to be used if “Asset Maintainer” is set to “Private”. Refer to OI 640_08_SD02. Private Community (separate to a scheme but protects a community (or critical infrastructure?)), Private Individual Attached (part of a scheme), Private Individual Unattached (Separate to a scheme but protects an individual (property of business)) | Picklist Private Community Private Individual Attached Private Individual Unattached | EA7 | Feature.Attribute.Name.LevelOfIntegration | 25-02-2020 | ||
| location The location of the asset, for example: nearest town and/or distance downstream of named bridge | Text Max Length: 200 | EA3 | Feature.Attribute.Name.Location | 25-02-2020 | ||
| management group Group who has the responsibility to maintain the data associated them in the system | Picklist EA FCRM | EA6 | Feature.Attribute.Name.ManagementGroup | 25-02-2020 | ||
| number of culverts The type of channel | Text Max Length: 30 | EA3 | Feature.Attribute.Name.NumberOfCulverts | 25-02-2020 | ||
| operational requirement Does this asset have an operational requirement? For example: routine plant crossing | Picklist Yes No | EA6 | Feature.Attribute.Name.OperationalRequirement | 25-02-2020 | ||
| override calculated condition Has the calculated condition been overridden? | Picklist Yes No | EA7 | Feature.Attribute.Name.OverrideCalculatedCondition | 25-02-2020 | ||
| override reason The reason the calculated condition was overridden | Text Max Length: 200 | EA7 | Feature.Attribute.Name.OverrideReason | 25-02-2020 | ||
| primary purpose The main purpose of the asset, i.e.: the reason it was constructed (a natural asset may have an asset management purpose) | Picklist Flood Risk Management Erosion Protection Water Resources Leisure and Amenity Environmental Navigation Water Level Management Fisheries Legal/statutory Highways Other | EA7 | Feature.Attribute.Name.PrimaryPurpose | 25-02-2020 | ||
| protection type The type of protection the asset gives | Picklist coastal fluvial fluvial/tidal tidal | EA3 | Feature.Attribute.Name.ProtectionType | 25-02-2020 | ||
| PSRA reference The public safety risk assessment reference number | Text Max Length: 30 | EA6 | Feature.Attribute.Name.PsraReference | 25-02-2020 | ||
| PSRA risk The public safety risk assessment risk | Picklist High Medium Low N/A | EA6 | Feature.Attribute.Name.PsraRisk | 25-02-2020 | ||
| PSRA site Does this asset require a Public Safety Risk Assessment? | Picklist Yes No | EA3 | Feature.Attribute.Name.PsraSite | 25-02-2020 | ||
| RASP type RASP type used for NaFRA – Refer to NaFRA guidance | Picklist | EA7 | Feature.Attribute.Name.RaspType | 25-02-2020 | ||
| recommendations The inspectors recommendations from the asset inspection | Text Max Length: 1000 | EA7 | Feature.Attribute.Name.Recommendations | 25-02-2020 | ||
| related event reference The reference for the related event that triggered the assessment, if applicable | Text Max Length: 20 | EA7 | Feature.Attribute.Name.RelatedEventReference | 25-02-2020 | ||
| replacement cost The replacement cost of the asset | Number Max: 99,999,999 Number of decimal places: 0 Can be negative? false Units: £ | EA6 | Feature.Attribute.Name.ReplacementCost | 25-02-2020 | ||
| replacement cost assessment date The date the replacement cost of the asset was assessed | Date | EA6 | Feature.Attribute.Name.ReplacementCostAssessmentDate | 25-02-2020 | ||
| residual life The estimated residual life of the asset | Number Max: 98 Number of decimal places: 0 Can be negative? false Units: years | EA7 | Feature.Attribute.Name.ResidualLife | 25-02-2020 | ||
| residual life date The date the residual life was assessed | Date | EA7 | Feature.Attribute.Name.ResidualLifeDate | 25-02-2020 | ||
| secondary purpose 1 The secondary purpose of the asset if it has one, i.e.: an incidental purpose | Picklist Flood Risk Management Erosion Protection Water Resources Leisure and Amenity Environmental Navigation Water Level Management Fisheries Legal/statutory Highways Other | EA7 | Feature.Attribute.Name.SecondaryPurpose1 | 25-02-2020 | ||
| secondary purpose 2 Another secondary purpose of the asset if it has one, i.e.: an incidental purpose | Picklist Flood Risk Management Erosion Protection Water Resources Leisure and Amenity Environmental Navigation Water Level Management Fisheries Legal/statutory Highways Other | EA7 | Feature.Attribute.Name.SecondaryPurpose2 | 25-02-2020 | ||
| spatial quality The data quality flag for the spatial position of the asset. Refer to OI 57_06 | Picklist 1 2 3 4 5 6 | EA7 | Feature.Attribute.Name.SpatialQuality | 25-02-2020 | ||
| summer blockage target Summer Blockage Conveyance Target – Refer to OI 339__07 | Number Max: 9 Number of decimal places: 0 Can be negative? false | EA7 | Feature.Attribute.Name.SummerBlockageTarget | 25-02-2020 | ||
| summer vegetation target Winter Blockage Conveyance Target – Refer to OI 339__07 | Number Max: 9 Number of decimal places: 0 Can be negative? false | EA7 | Feature.Attribute.Name.SummerVegetationTarget | 25-02-2020 | ||
| target condition The target condition of the asset – Refer to OI 026_08 | Picklist 1 2 3 4 5 9 | EA7 | Feature.Attribute.Name.TargetCondition | 25-02-2020 | ||
| urgency The urgency of the action required following the asset inspection | Picklist urgent routine | EA7 | Feature.Attribute.Name.Urgency | 25-02-2020 | ||
| weight limit The weight limit of the bridge if used for vehicular access | Number Max: 99.99 Number of decimal places: 2 Can be negative? false Units: tonnes | EA7 | Feature.Attribute.Name.WeightLimitBridge | 25-02-2020 | ||
| winter blockage target Summer Vegetation Conveyance Target – Refer to OI 339__07 | Number Max: 9 Number of decimal places: 0 Can be negative? false | EA7 | Feature.Attribute.Name.WinterBlockageTarget | 25-02-2020 | ||
| winter vegetation target Winter Vegetation Conveyance Target – Refer to OI 339__07 | Number Max: 9 Number of decimal places: 0 Can be negative? false | EA7 | Feature.Attribute.Name.WinterVegetationTarget | 25-02-2020 | ||
| worst condition The worst condition taken from the list of element conditions of the asset | Picklist 1 2 3 4 5 | EA7 | Feature.Attribute.Name.WorstCondition | 25-02-2020 | ||
| year last refurbished The year the asset was last refurbished | Date Format: year | EA6 | Feature.Attribute.Name.YearLastRefurbished | 25-02-2020 |