E 131 Terms or Words

Revised on 02-20-2025

The following are the most commonly used terms/words and their respective abbreviations.

  • ACB: Asphalt concrete base
  • ADT: Average Daily Traffic
  • AFE:  Authority for Expenditure
  • A’11: 1911 Assessment Act, Streets and Highways Code
  • APWA/AGC: American Public Works Association/ Associated General Contractor's Joint Cooperative Committee
  • Blvd. or Bl.: Boulevard
  • Board: Los Angeles Board of Public Works
  • Bur.: Bureau
  • C: Crown or Celsius
  • Caltrans: California Department of Transportation
  • CATV: Cable Television
  • CD: Council District
  • CE: City Engineer or County Engineer
  • CEQA: California Environmental Quality Act
  • CL or C/L: Center line
  • Cfs: Cubic feet per second
  • CIP: Capital Improvement Project
  • CMP: Corrugated metal pipe
  • Council: Los Angeles City Council
  • DHV: Design hour volume
  • Dist.: District
  • Div.: Division
  • D.M.: District map
  • DOT: (FEDERAL) Department of Transportation
  • EIR: Environmental Impact Report (CEQA)
  • EIS: Environmental Impact Statement (NEPA)
  • Elev.: Elevation
  • Est.: Estimate
  • EWL: Equivalent wheel load
  • Exist: Existing
  • FAP: Federal Aid Primary (Program)
  • FAS: Federal Aid Secondary (Program)
  • FAU: Federal Aid Urban (Program)
  • FHWA: Federal Highway Administration
  • Fps: Feet per second
  • Ft.: Foot or feet
  • Fwy.: Freeway
  • GE: Equivalent thickness of gravel (total)
  • GF: Gravel equivalent factor
  • Gr. Ch.:  Grade change
  • Green Book: Standard Specification for Public Works Construction
  • H: High or height
  • ID: Improvement District or inside, diameter
  • Impr: Improvement
  • LADOT: Los Angeles City Department of Transportation
  • Lin.: Linear
  • MB: Map Book
  • MC: Middle of curve
  • MCR: Middle of curb return
  • Min: Minutes or minimum
  • Mun. Code: Los Angeles Municipal Code
  • NEPA: National Environmental Protection Act
  • OFP: Order For Possession
  • OI: Ordinance of Intention
  • OLC: Ornamental Lighting Conduit
  • PI: Permanent Improvement
  • Prod.: Produced
  • Proj.: Project
  • Prop.: Proposed or property
  • Psf: Pounds per square foot
  • Psi: Pounds per square inch
  • PUC: Public Utilities Commission
  • R: Radius or rate of grade (percent)
  • RD: Roof drain
  • Rdwy: Roadway
  • Ret. Wall: Retaining wall
  • S: Sight distance or slope
  • SD: Sewer District
  • Sec.: Seconds
  • Sect.: Section
  • SF: Safety factor
  • SMB: Select material base
  • SO: Special Order
  • Sq.: Square
  • St. Dr.: Storm Drain
  • S'41: 1941 Ordinance of Improvements by Assessment
  • TH: Test hole
  • TI: Traffic index
  • V: Velocity of flow
  • WO: Work Order
  • WS: Wearing surface or water surface
  • WW: Wall-to-wall (out-to-out)
  • Yd.: Yard or yards