Element of Groyne
Crest
The highest point or surface of an asset which retains water (e.g. embankment, beach, weir). This may be a wide surface as in the top of an embankment or a narrow crest as in the top of a wall.
![An example of the Crest of an Embankment.](/asset-management/drl-app/img/2023-03-20-11:57:08-Crest-Embankment.jpg)
![An example of the Crest of a Weir.](/asset-management/drl-app/img/2023-03-20-11:57:32-Crest-Weir.jpg)
Attributes
An attribute is a particular piece of data that describes a property of an object. Each Element Type is described by a different set of attributes, although there are some attributes that are common to many Element Types.
The table below lists the attributes that are applicable to this Element 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 |
---|---|---|---|---|---|---|
Business Function The Business Function that is responsible for the element | Picklist Air Quality Analysis & Reporting Corporate Assets Environment Management FCRM Fisheries, Biodiversity and Geomorphology (FBG) Ground Water & Contaminated Land Hydrometry and Telemetry Navigation Water Quality Water Resources | EA6 | P09 Operations | Yes | Component.Attribute.Name.BusinessFunction | 27-04-2021 |
Comments Other comments about the element | Text Max Length: 2000 | EA2 | P09 Operations | No | Component.Attribute.Name.Comments | 07-11-2023 |
Condition The condition grade of the element | Picklist 0 - Unchecked 1 - Very Good 2 - Good 3 - Fair 4 - Poor 5 - Very Poor | EA6 | P09 Operations | No | Component.Attribute.Name.Condition | 27-04-2021 |
Edge LineString 1 A spatial lineString locating the exposed edge or spatial feature of an element further classified by the associated LineStringType attribute. Edge lineStrings may be singular (Edge LineString1) required in all cases, or paired (Edge LineString 1 and 2); the second may not be required indicated by 'n/a'. A lineString is a series of design or measured spatial triple points (easting, northing, elevation) each connected by a single non-crossing line, with single points at each end, that locate an element. A lineString is expressed as a JSON array of type geoJSON lineString, e.g. [[x1,y1,z1],[x2,y2,z2],...] It is further classified by the associated LineStringType attribute confirming its relative location to the element. Interim points should be spaced at a maximum of 2m for lines < 10m in length, or 10m otherwise. The default CRS is a 3D CRS to EPSG 7405 with confirmed type, European reference frame and UK OS transformation with geoCOBie Unit of 'LineString:EPSG7405:ETRS89:OSTN15:OSGM15' | Geometry Units: LineString:EPSG7405:ETRS89:OSTN15:OSGM15 | EA2 | P09 Operations | No | Component.Attribute.Name.EdgeLineString1 | 05-09-2022 |
Edge LineString 2 A spatial lineString locating the landward edge or spatial feature of an element further classified by the associated LineStringType attribute. Edge lineStrings may be singular (Edge LineString1) required in all cases, or paired (Edge LineString 1 and 2); the second may not be required indicated by 'n/a'. A lineString is a series of design or measured spatial triple points (easting, northing, elevation) each connected by a single non-crossing line, with single points at each end, that locate an element. A lineString is expressed as a JSON array of type geoJSON lineString, e.g. [[x1,y1,z1],[x2,y2,z2],...] It is further classified by the associated LineStringType attribute confirming its relative location to the element. Interim points should be spaced at a maximum of 2m for lines < 10m in length, or 10m otherwise. The default CRS is a 3D CRS to EPSG 7405 with confirmed type, European reference frame and UK OS transformation with geoCOBie Unit of 'LineString:EPSG7405:ETRS89:OSTN15:OSGM15' | Geometry Units: LineString:EPSG7405:ETRS89:OSTN15:OSGM15 | EA2 | P09 Operations | No | Component.Attribute.Name.EdgeLineString2 | 05-09-2022 |
Element Crest Level The crest level of the element | Number Max: 1,000.00 Min: 0.00 Number of decimal places: 2 Units: mAOD | EA3 | P09 Operations | No | Component.Attribute.Name.ElementCrestLevel | 07-11-2023 |
Element Description Description of element if required | Text Max Length: 400 | EA2 | P09 Operations | No | Component.Attribute.Name.ElementDescription | 27-04-2021 |
Element ID The Element ID from the AIMS OM system, if known. | Text Max Length: 200 | EA6 | P01 Registration | Yes | Component.Attribute.Name.ElementID | 27-04-2021 |
Element Location Location of element, control measure or tree(s) | Text Max Length: 200 | EA2 | P09 Operations | No | Component.Attribute.Name.ElementLocation | 27-04-2021 |
Element Name The name of the element if it has one | Text Max Length: 550 | EA2 | P09 Operations | No | Component.Attribute.Name.ElementName | 07-11-2023 |
Element Ref Unique element reference code in scheme context assigned by scheme designer, e.g. CRT0123 | Text Element code CRT + sequence number | EA2 | P01 Registration | No | Component.Attribute.Name.ElementRef | 27-04-2021 |
Element Revetment The surface protection material of the element | Picklist Asphalt Bituminised Aggregate Cast in-situ concrete Cobbles Coir pallets Coir rolls Geomats Granulated Concrete Other Revetment (describe) Precast concrete - armourflex (cabled concrete blocks) Precast concrete - dolos Precast concrete - loose blocks Precast concrete - slabs/cladding Precast concrete - tetrapods Rock Armour Rock rolls Root wads Stone - grouted Stone - hand-pitched Stone - loose blocks None | EA3 | P09 Operations | Yes | Component.Attribute.Name.ElementRevetment | 27-04-2021 Picklist edited 11-04-2023 |
Element Sequence The place in the sequential order of the elements | Number Max: 100 Min: 0 Number of decimal places: 0 | EA3 | P09 Operations | No | Component.Attribute.Name.ElementSequence | 27-04-2021 |
Element Slope The slope of the element in degrees | Number Max: 90 Min: 0 Number of decimal places: 0 Units: degrees | EA3 | P09 Operations | No | Component.Attribute.Name.ElementSlope | 27-04-2021 |
Element Slope Date The date that the slope of the element was captured | Date | EA6 | P09 Operations | No | Component.Attribute.Name.ElementSlopeDate | 27-04-2021 |
Element Slope DQF The data quality flag defining the quality and method of capturing the slope of the element | Picklist 1 - +/- 0.01m to 0.05m vertical accuracy (Typically on site survey) 2 - +/- >0.05m to 0.15m vertical accuracy (Typically LIDAR or Photogrammetry) 3 - +/- >0.15m to 0.75m vertical accuracy (Typically older (pre 2004) LIDAR or Photogrammetry) 4 - +/- 0.75m or more vertical accuracy | EA6 | P09 Operations | No | Component.Attribute.Name.ElementSlopeDQF | 27-04-2021 |
Element Type The type of element | Picklist Crest | EA2 | P01 Registration | No | Component.Attribute.Name.ElementType | 27-04-2021 |
Element Weighting The weighting of the individual element. The value will be the 'default' weighting predefined for the element type, or if Use Variant Weighting = True, then the value will be the 'variant' weighting predefined for the element type. | Picklist 1 2 3 4 5 6 7 8 9 | Auto | P09 Operations | No | Component.Attribute.Name.ElementWeighting | 18-12-2023 |
Element Width The width of the element | Number Max: 1,000.00 Min: 0.00 Number of decimal places: 2 Units: metres | EA3 | P09 Operations | No | Component.Attribute.Name.ElementWidth | 27-04-2021 |
Element Width Date The date that the width of the element was captured | Date | EA6 | P09 Operations | No | Component.Attribute.Name.ElementWidthDate | 27-04-2021 |
Element Width DQF The data quality flag defining the quality and method of capturing the width of the element | Picklist 1 - +/- 0.01m to 0.05m vertical accuracy (Typically on site survey) 2 - +/- >0.05m to 0.15m vertical accuracy (Typically LIDAR or Photogrammetry) 3 - +/- >0.15m to 0.75m vertical accuracy (Typically older (pre 2004) LIDAR or Photogrammetry) 4 - +/- 0.75m or more vertical accuracy | EA6 | P09 Operations | No | Component.Attribute.Name.ElementWidthDQF | 27-04-2021 |
LineString 1 Type The type of Edge LineString 1 | Picklist Axial Crest Invert | EA2 | P09 Operations | No | Component.Attribute.Name.LineString1Type | 27-04-2021 |
LineString 2 Type The type of Edge LineString 2 | Picklist Axial Crest Invert | EA2 | P09 Operations | No | Component.Attribute.Name.LineString2Type | 27-04-2021 |
Material The material of the element | Picklist Bagwork Cement Concrete - Alkali-Activated Cementitious Material (AACM) based concrete Concrete - Unreinforced, Cast in-situ Concrete - Unreinforced, Precast Concrete - Reinforced, Cast in-situ Concrete - Reinforced, Precast Concrete - Other (describe) Earth Ferrous Metal - Cast Steel Ferrous Metal - Corrugated/Armco Ferrous Metal - Galvanised Steel Ferrous Metal - Iron Ferrous Metal - Mild Steel Ferrous Metal - Other (describe) Ferrous Metal - Stainless Steel Ferrous Metal - Wire Mesh Geogrids Geotextiles Glass Granular Material - Boulders Granular Material - Clay Granular Material - Cobbles Granular Material - Gravel Granular Material - Sand Granular Material - Silt Granular Material - Mixed Grade Masonry - Blockwork Masonry - Brickwork Masonry - Stonework Masonry - Other (describe) Other Material (describe) Plastic - GRP (Glass Reinforced Plastic) Plastic - HDPE (High-density polyethylene) Plastic - LDPE (Low-density polyethylene) Plastic - Other (describe) Plastic - Perspex Acrylic Plastic - PVC (Polyvinyl Chloride) Timber - Hardwood Timber - Other (describe) Timber - Softwood Timber - Timber Products Turf | EA3 | P09 Operations | Yes | Component.Attribute.Name.Material | 27-04-2021 Picklist edited 18-12-2023 |
Material Description A description of the element's material. Only applicable where Material = Concrete - Other, Ferrous Metal - Other, Masonry - Other, Non-ferrous Metal - Other, Other Material, Plastic - Other, or Timber - Other | Text Max Length: 100 | EA3 | P09 Operations | No | Component.Attribute.Name.MaterialDescription | 27-04-2021 |
Parent Asset Ref The Asset Reference of the parent asset that this element is part of, e.g. BG0123 | Text Asset code BG + sequence number | EA2 | P09 Operations | No | Component.Attribute.Name.ParentAssetRef | 27-04-2021 |
Photo A photograph or image related to the element. | Photo | EA4 | P09 Operations | No | Component.Attribute.Name.Photo | 07-11-2023 |
Revetment Depth The depth of the revetment | Number Max: 10.00 Min: 0.00 Number of decimal places: 2 Units: metres | EA3 | P09 Operations | No | Component.Attribute.Name.RevetmentDepth | 31-08-2021 |
Revetment Description A description of the element's revetment (surface protection) material. Only applicable where Element Revetment = Other Revetment | Text Max Length: 200 | EA3 | P09 Operations | No | Component.Attribute.Name.RevetmentDescription | 27-04-2021 |
Seeding Surface Type The type of seeding surface. Only applicable to elements with a Turf material. | Picklist Grass seed low maintenance mix Hydraulic mulch grass seeding Turfing Turf reinforced mat | EA3 | P09 Operations | No | Component.Attribute.Name.SeedingSurfaceType | 31-08-2021 |
Topsoil Depth The depth of the topsoil | Number Max: 0.50 Min: 0.00 Number of decimal places: 2 Units: metres | EA3 | P09 Operations | No | Component.Attribute.Name.TopsoilDepth | 31-08-2021 |
Use Variant Weighting Has the weighting value been amended using the variant from the asset element record? | Boolean | EA6 | P09 Operations | Yes | Component.Attribute.Name.UseVariantWeighting | 27-04-2021 |