The BS1192 - Descriptive layer standard contains the following fields:
| Field Name | Description |
|---|---|
| Discipline | Identifies the author of the layer by using a single character. For example, A for architect, S for structural engineer. This field is required. |
| Element | Identifies the building element by using a descriptive name for it. For example, possible choices for this field are “Equipment” or “Room.” This field is required. |
| Graphics | Indicates information that is associated with the category by using a single character. For example, D for dimension, G for graphics, T for text. This field is required. |
| Level | Differentiates viewing planes in plan, section, or elevation view by using a two-digit alphanumeric character. For example, 01 would be Level/Floor 1, EA the elevation, and SA Section A. This field is optional. |
| Status | Indicates the state of work by using a single character. For example, N indicates new, R indicates to be removed. This field is optional. |
| Scale | Indicates the level of detail to be shown by using a single character. For example, P indicates a planning level, D indicates a detail. This field is optional. |
| Phase | Indicates phasing or alternatives by using a single character. |
| User | Specifies the user. It is not a fixed width field but is separated from the rest of the layer name with an underscore. For example, A210G701_WALL_L1. This field is optional. |
The following table lists the rules for the BS1192 - Descriptive Layer Standard:
| Field | Optional | Width | Fixed | Wildcard | Match | Delimiter | Default |
|---|---|---|---|---|---|---|---|
| Discipline | No | 1 | Yes | [0A-Z] | No | None | A |
| Element | No | 15 | No | * | No | - | Wall |
| Graphics | No | 1 | Yes | [0ACDGHTZ] | No | - | G |
| Level | Yes | 2 | Yes | [0-9A-Z][0-9A-Z] | No | None | 00 |
| Status | Yes | 1 | Yes | [0NXR] | No | None | 0 |
| Scale | Yes | 1 | Yes | [0ASPD] | No | None | 0 |
| Phase | Yes | 1 | Yes | [0-9A-Z] | No | None | 0 |