Standard Level Applications for Facility Drafting
Facility, Pipeline and Survey drafting groups share the same level structure. Level assignments have been split into groups of related items. These level applications should be followed for all drawings. The proper relationship between drawings and disciplines depends on the consistent use of levels. Any modification to the level applications should be approved in writing by the District CAD Contact.
Levels also control the appearance of hard copy plots. See the section on Plotting for additional information.
Within each group, spare levels are available to accommodate unusual drawing requirements. Spare levels may be used as required, but should be used to depict items in the same category. When a consultant uses any spare levels, the use of these levels should be consistent from one drawing to the next. An updated level application list shall be submitted at the completion of each project, indicating how spare levels were used for that project..
Levels are stored in DGNLIB files
The Facility Drafting standard MicroStation configuration will automatically attach a set of level DGNLIB files to each file. These DGNLIB's contain all of the levels required for all drawings. Creation of new levels is restricted. No new levels should be added without approval from the District CAD Contact.
Civil levels are used for both Existing and Proposed
On most projects both the existing site plan and the proposed site plan are drawn in separate reference files. Those files are attached to one or more drawings. This can be referred to as the "existing site master file" and the "new site master file". Both the existing and new site plans share the same set of CIVIL levels. Since they are drawn in separate files, there is no conflict.