BIM: The key metadata components held in file names, that need to be held and managed to support CDE
- Structures Insider
- Nov 28, 2022
- 2 min read
Source from UNREAL ENGINE
What is Metadata?
Metadata is about the container controlling its position and status in the process. The metadata is a set of data that gives information about other data. ISO 19650 series requires, as a minimum, the following metadata within the Common Data Environment (CDE).
Every container should document a single building zone or asset (location), contained within a single volume of space
What is CDE?
A common data environment (CDE) is a digital information platform that centralizes project data storage and access, typically related to construction projects and building information modeling (BIM) workflows. The data stored in a CDE originally consisted of BIM data and information.
Definition by Trimble
Key metadata components (example):
File naming
Revision and versioning
Status of container contents – what it can be used for
Location
Federation or volume
Originator
Type of information in the container
Unique reference number
Also Recommended to you:
Source: BS1192:2007
Structures of names: which gives the revisions and status code. It shows the iterative nature of the information as it progresses to completion.
File container revision codes: Revision code is required to track the progression of a file or document to its completion and authorization. It provides audited change control.
Purpose/status codes:
o What the information in the container can be safely used for.
o Status defines the FITNESS of information in a model, drawing, or document. It allows each design discipline to control the use to which their information may be put. Some examples of status codes are:
S1: fit for coordination
D1: fit for costing
A: fit for construction
Spatial coordination location
o The location is required for the asset’s coordinates in the world and the project. Early work looks at the position in the building such as the floor level, room/space, or a more generic view of infrastructures such as area zone or linear position (a linear reference between two positions)
o Spatial coordination of BIM is basically generated model data 2D or 3D as agreed project coordinate system and true height above project datum
Model segregation – Volume/federation parts
o A volume defines the extent of model files, and one or more model files (referenced files) can relate to a volume. A volume is restricted to a level or location, in a two-dimensional sense that does not combine multiple levels or locations. Pieces of the same discipline, without overlapping or leaving any gaps is a volume. If other discipline's volumes are then overlaid, a composite of multi-authored information will produce the complete project model
