Standard Field Codes Reference

Comprehensive guide to standardized field codes for topographic surveys.

Quick Reference

Common Prefixes

  • B- : Beginning of feature
  • E- : End of feature
  • T- : Top of feature
  • L- : Line feature
  • P- : Point feature

Suffixes

  • -CL : Centerline
  • -FL : Flowline
  • -TW : Top of Wall
  • -BW : Bottom of Wall
  • -INV : Invert

Special Characters

  • . : Point delimiter
  • / : Code separator
  • @ : At elevation
  • * : Reference point
  • # : Station number

Topographic Features

  • SPOTSpot Elevation
  • BRKBreak Line
  • RIDGERidge Line
  • VALLEYValley Line
  • TOEToe of Slope
  • TOPTop of Slope

Utilities

  • MHManhole
  • WVWater Valve
  • FHFire Hydrant
  • PPPower Pole
  • CBCatch Basin
  • GUYGuy Wire

Buildings

  • BLDGBuilding
  • CORNBuilding Corner
  • ENTREntrance
  • STEPSteps
  • DECKDeck
  • PRCHPorch

Roads

  • CLCenterline
  • EPEdge of Pavement
  • CURBCurb
  • SWSidewalk
  • DWDriveway
  • SIGNSign

Vegetation

  • TREETree
  • BUSHBush
  • WOODWoods Line
  • PALMPalm Tree
  • STUMPTree Stump
  • GRDNGarden

Control Points

  • CPControl Point
  • BMBenchmark
  • TPTurning Point
  • GPSGPS Control
  • MONMonument
  • HUBHub