| DXF LAYER NAME | COMMONLY CONTAINS | USED
IN DTM |
|---|
| X-STRUCT-BUILDING | Building roof outlines. | N |
| X-STRUCT-FOUNDATION | New or razed building foundations. | N |
| X-STRUCT-WALL | Walls (free standing or retaining). | N |
| X-STRUCT-BRIDGE | Bridge decks, walls, and related hardware. | N |
| X-STRUCT-ROOF | Roof lines where applicable, or building hatching. | N |
| X-STRUCT-POOL | Swimming pools. | N |
| X-RR-RAIL | Railroad rails and cross ticks. | N |
| X-RR-SWITCH | Railroad switch hardware. | N |
| X-ROAD-HARD | Edge of pavement, or fog line where the berm appears to be a different material. | Y |
| X-ROAD-SOFT | Edge of a dirt road or paved road with very poorly defined edges. | Y |
| X-ROAD-CURB | Roadway curb face with back approximated on 1"=100' or larger scale. | Y |
| X-ROAD-BERM | Paved or well defined dirt berm. | Y |
| X-ROAD-ALLEY | Alleys. | Y |
| X-ROAD-MARKING | Pavement stripes to control traffic. | N |
| X-ROAD-MARKING-DASHED_CL | Dashed pavement marking between opposing lanes. | N |
| X-ROAD-MARKING-DOUBLE_CL | Double yellow no passing pavement marking. | N |
| X-ROAD-MARKING-CHANNELIZED_LANE | Channelizing lane pavement markings. | N |
| X-ROAD-MARKING-EDGE_LINE | Outside edge of pavement marking. | N |
| X-ROAD-MARKING-STOP_BAR | Stop bar pavement marking. | N |
| X-ROAD-MARKING-CROSSWALK | Crosswalk pavement marking. | N |
| X-ROAD-MARKING-PASS_PROHIBIT | One directions passing prohibited pavement marking with direction via symbology. | N |
| X-ROAD-MARKING-DASHED_LANE | Dashed lane division pavement marking. | N |
| X-ROAD-MARKING-TRANSVERSE_LINE | Transverse pavement marking. | N |
| X-ROAD-CL | Roadway centerlines. | Y |
| X-ROAD-SIGNAL | Suspended traffic signals. | N |
| X-ROAD-GUARDRAIL | Guardrails. | N |
| X-ROAD-TEXT | Text related to transportation features. | N |
| X-CURB-OFFSET | Generalized back of curb using standard offsets to approximate the shape of curbing. Not included in graphic files. | Y |
| X-CURB-DRIVEWAY | Drive curb face with back approximated on 1"=100' or larger scale. | Y |
| X-CURB-PARKING | Parking lot curb face with back approximated on 1"=100' or larger scale. | Y |
| X-DRIVE-TRACK | Running or racing tracks. | Y |
| X-DRIVE-BIKEPATH | Dedicated bike path. | Y |
| X-DRIVE-HARD | Paved drives. | Y |
| X-DRIVE-SOFT | Dirt drives or parking areas. | Y |
| X-DRIVE-PARKING-LOT | Edge of paved parking area. | Y |
| X-DRIVE-PARKING-MARK | Parking stripes. | N |
| X-DRIVE-TRAIL | Poorly defined trail usually wandering through a field or woods. | N |
| X-WATER-RIVER | Natural water courses. | Y |
| X-WATER-LAKE | Ponds or lakes. | Y |
| X-WATER-DITCH | Man made water courses. | Y |
| X-WATER-SWAMP | Low wet areas, seasonal or otherwise. | Y |
| X-WATER-PIPE | Drain pipes. | N |
| X-WATER-TEXT | Text related to hydrology features. | N |
| X-PROP-FENCE | Fence lines. | N |
| X-PROP-FIELD | Line of occupation with no fence. | N |
| X-PROP-ATHLETIC | Athletic and recreational areas. | N |
| X-POLE-SIGN-ROAD | Signs related to transportation routes. | N |
| X-POLE-UTILITY | Power or phone pole. | N |
| X-POLE-LIGHT-STREET | Light only or power pole with a light on it along transportation routes. | N |
| X-POLE-MISC | Pole of unknown description. | N |
| X-POLE-POST | Small post of unknown description. | N |
| X-POLE-LIGHT-MISC | Light only or power pole with a light on it not along transportation routes. | N |
| X-POLE-MAILBOX | Mailboxes. | N |
| X-POLE-LIGHT-YARD | Small lighting features around houses. | N |
| X-POLE-SIGN-MISC | Miscellaneous signage not related to transporation. | N |
| X-POLE-GUY | Poles or cable anchors for supporting utility poles. | N |
| X-POLE-SIGN-OVERHEAD | Poles or structures for displaying signs over roadways. | N |
| X-POLE-FLAG | Flagpoles. | N |
| X-POLE-TRAFFIC | Poles supporting traffic signals. | N |
| X-UTIL-COVER | Manhole or underground feature cover. | N |
| X-UTIL-HYDRANT | Fire hydrant. | N |
| X-UTIL-DRAIN | Catch basin, drain grate, or drop inlet. | N |
| X-UTIL-PHONE | Telephone boxes. | N |
| X-UTIL-ELECTRIC | Electric service features. | N |
| X-UTIL-LP | Propane tanks. | N |
| X-UTIL-TRANSMISSION | Large structures dedicated to cross country transmission of utilities. | N |
| X-TANK-CAP | Cap, lid or access to underground storage. | N |
| X-UTIL-ANT-DISH | Antenna or satellite dish. | N |
| X-GOLF-FAIRWAY | Golf course fairway. | N |
| X-GOLF-GREEN_TEE | Golf course greens or tees. | Y |
| X-GOLF-SAND | Golf course sand traps. | Y |
| X-GOLF-CARTPATH | Golf course cartpaths. | Y |
| X-GOLF-SPRINKLER | Golf course sprinkler heads or lines where they can be defined. | N |
| X-AIRPORT-MISC | Small features, areas, or hardware associated with an airport. | N |
| X-AIRPORT-MARKING | Pavement stripes associated with an airport. | N |
| X-AIRPORT-RUNWAY | Airport runway. | Y |
| X-AIRPORT-TAXIWAY | Airport taxiway. | Y |
| X-AIRPORT-TARMAC | Areas of airplane parking and strorage. | Y |
| X-AIRPORT-LIGHTS | Lighting dedicated to airport operations. | N |
| X-AIRPORT-APPROACH | Hardware located in and apparently used in runway approaches. | N |
| X-TREE-TREELINE | Line around a group of trees. | N |
| X-TREE-HEDGE | Hedges. | N |
| X-TREE-TREE | Single trees. | N |
| X-TREE-BRUSH | Brush lines. | N |
| X-TREE-LANDSCAPE | Non foliage features related to landscaping. | N |
| X-MISC-HEADSTONE | Headstones, tombs, or grave markers. | N |
| X-MISC-PILES | Stockpiles, usually in quarry or storage yard setting. | N |
| X-MISC-PILE-SHADE | Shading of piles in above layer. | N |
| X-MISC-CONVEYOR | Features and hardware used for material handling. | N |
| X-MISC-CONCRETE | Concrete structures not related to sidewalks. | N |
| X-MISC-LINES | Linear items which can't be identified. | N |
| X-MISC-WALKS | Sidewalks and decks. | N |
| X-MISC-SYM | Symbol items which can't be identified. | N |
| X-MISC-TEXT | Text labels. | N |
| X-MISC-DECK | Porch or decking. | N |
| X-MISC-TANK | Storage tanks. | N |
| X-TOPO-BREAKLINES | Topographic only features used for creation of a digital elevation model. Not included in graphic files. | Y |
| X-TOPO-INDEX | Fifth contours used as index lines and labeled. | N |
| X-TOPO-INDEX-TXT | Index contour text if not in same layer as contours. | N |
| X-TOPO-INDEX-DASH | Obscured index contours. | N |
| X-TOPO-INDEX-DASH-TXT | Index contour text if not in same layer as contours. | N |
| X-TOPO-INTERMED | Contour lines showing every contour interval. | N |
| X-TOPO-INTERMED-TXT | Intermediate contour text if not in same layer as contours. | N |
| X-TOPO-INTERMED-DASH | Obscured intermediate contours. | N |
| X-TOPO-INTERMED-DASH-TXT | Intermediate contour text if not in same layer as contours. | N |
| X-TOPO-SPOTS | Labeled spot elevations - symbols. | Y |
| X-TOPO-SPOTGRID | Spot elevation grid used for creation of a digital elevation model. Not included in graphic files. | Y |
| X-TOPO-SPOT-TEXT | Labeled spot elevations - text. | N |
| X-SHEET-GRID | Grid lines showing survey grid system, usually every 5 inches. | N |
| X-SURV-BOUNDRY | Property boundary information supplied by the surveyor or client. | N |
| X-SURV-CONTROL | Control network tying the mapping to an established coordinate system. | Y |
| X-SHEET-SHEET | Title block information | N |
| X-LIMITS-MAP | Line showing limits of map compilation. | N |
| X-LIMITS-OBSCURED | Outline of areas where ground is obscured and contours may be suspect. | N |
| X-LIMITS-FORM-LINES | Outline of areas where visibility is severly limited and contours are only shown for convenience to roughly portray the general shape of the ground. | N |
| X-LIMITS-UPDATE | Ouline of areas that were changed in an update to previous mapping. | N |
| X-LIMITS-ORTHO-CUT | Cutlines for generating mosaics of ortho photography. Not included in graphic files. | N |
| X-ORTHO-DEM-LINE | Topographic line features only used to generate ortho photos. Not included in grapic files. | N |
| X-ORTHO-DEM-SYM | Topographic point features only used to generate ortho photos. Not included in grapic files. | N |
| SURV-PTS | Symbol showing location of data supplied by surveyor. | N |
| SURV-LINE | Lines connecting surveyor supplied points. | N |
| SURV-PT-NO | Point name or number for surveyor supplied points. | N |
| SURV-DESC | Descriptions supplied with points. | N |
| SURV-ELEV | Elevation associated with surveyor supplied points. | N |
