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   First Part Names Describe the Discipline

   Second Part Names Depend on Discipline Chosen

   Objects Under DLG
   Objects Under MF
   Objects Under PB
   Objects Under SF
   Objects Under TO

   Third Part Names Help to Further Define Second Part

   Fourth Part Names Define AutoCAD Entities

   Examples of Falkirk Layer Convention Standards

Last Update 11-6-99

The layer convention is based on four-part layer names to allow the user to control layer display and status by using wild card characters. Each part name describes a particular characteristic of the entities contained in that layer. The first part of the name is the discipline that the objects are associated with. The second part name describes the type of object to be drawn. The third part describes the state of the object and the fourth part of the name represents the AutoCAD entity that is being used.

First Part Names Describe the Discipline:

ASH	Ash Pit Information
BD	Border Layer
CB	Cable Belt Information
DE	Design Layer for Roads, etc.
Defpoints-GRVL	Place for Drawing Information (this layer doesn't plot)
DLG	US Geological Survey Digital Line Graph
DS	Disturbance Information
EG	Engineering Information
EN	Environmental Information
GE	Geology Information
HY	Hydrology Information
IM	Image Layers for Photos
LND	Bismarck Land Department
MF	Mine Features for Mine Road, Buildings, etc.
MP	Mine Plan Layer
OLD	Layer for Old Mines
OWN	Ownership Layer for Surface & Coal Owners
PB	Permit Boundary Layers
PO	Power Line Layers
RC	Road Closure Information
RE	Reference Information
RG	Respread/Regrade Information
SC	Tract Line
SF	Surface Feature Layers
SV	Survey Information
TO	Topographic Mapping Contours
WA	Pre- & Post-Mining PHC & Routing Layers
WC	Worst Case Bond Information
WM	Surface Water Management Features      (ponds, diversion, pitwater line, etc.)

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Objects Under DLG:

BOUN	Boundary
NAME	City, County, Cemetery, etc.
Powerline	Powerline
Railroad	Railroad
Road-GRVL	Gravel Road
Road-PVMT	Paved Road
Road-Trail	Trail
WATR	Water Features

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Objects Under MF:

BLDDG	Mine Site Building
FENC	Mine Site Fences
ROAD	Mine Site Roads

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Objects Under PB:

EAST	8405 Permit Boundary
ISL	9601 Permit Boundary
RIVE	9503 Permit Boundary
RIV2	Riverdale 2nd Permit Boundary
WEST	8705 Permit Boundary

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Objects Under SF:

BLDG	Building
CROP	Cropland Label
CULV	Culvert
FENC	Fence
FLDL	Field Line
MISC	Miscellaneous Items
RLRD	Railroad
ROAD-GRVL	Gravel Road
ROAD-TRAL	Trail or Dirt Road
ROCK	Rock Pile
SHRB	Existing Shrubs
SIGN	Existing Sign
SINK	Sink Hole
SOILS	Surface Feature soils type
TANK	Existing Fuel or Water Tanks
TREE	Existing Trees
WATR-CREK	Creek
WATR-LAKE	Lake
WATR-SWMP	Swamp

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Objects Under TO:

Misc.	Topo which doesn't fit in the following categories
	(Example is truck dump Section 5 topo)
POST	Post-Mining Finished Topo (includes topsoil)
PREM	Pre-Mining Topo
REGR	Regrade Topo (doesn't include subsoil or topsoil)
SPOL	Spoil topo (example is K pits and Center Area topo)
USGS 1"=2000' scale	USGS topo

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Third Part Names Help to Further Define Second Part:

Example below applies to TO (Topo):

IEVN	Index Even Contour (1900, 1920, 1940, 1960, etc.)
IODD	Index Odd Contour (1910, 1930, 1950, 1970, etc.)
MEVN	Middle Even Contour (1904, 1908, 1912, 1916, 1924, etc.)
MODD	Middle Odd Contour (1902, 1906, 1914, 1918, 1922, etc.)

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Fourth Part Names Define AutoCAD Entities:

BLK	Drawing Block
BLN	Blind Clip Line (i.e., annotated index contours)
HTC	Hatch
LIN	Line
PNT	Point
SYM	Symbol
TIC	Depression tics for wetlands
TXT	Text

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