Construction Drawings Abbreviations: Acronyms Explained

Construction Abbreviation
Construction Abbreviation. Photo Pixabay cocoparisienne

Construction Drawings Abbreviation

A construction drawing or an engineering print is full of icons, lines, and abbreviations. There are so many that you must know or have an idea to what they are referring to in order to fully understand what's been designed in the construction drawing. These are typical abbreviations that you might find on a typical engineering drawing or in almost any design print.

A

  • A/C - Air Conditioner
  • ACI: American Concrete Institute
  • ADA: Americans with Disabilities Act of 1992
  • A.F.F. - Above Finished Floor
  • A.F.G. - Above Finished Grade
  • AIA: American Institute of Architects or American Insurance Association
  • AIEE: American Institute of Electrical Engineers
  • AISC: American Institute of Steel Construction
  • ASCE: American Society of Civil Engineers
  • ASME: American Society of Mechanical Engineers
  • ASTM: American Society for Testing and Materials
  • AWG: American Wire Gauge

B

  • BOT: Bottom
  • B.O.F. - Bottom of footing
  • B.O.M- Bill of Material
  • B.O.W. - Bottom of wall
  • BRZ: Bronze
  • BV: Butterfly Valve

C

  • CAD: Cadmium or Computer-Aided Drafting
  • C.C -Center to Center
  • C.D. - Construction document
  • C.F.M. - Cubic Feet per Minute
  • C.I. - Cast Iron
  • CL. - Closet
  • CLG. - Ceiling
  • C.O. - Clean Out
  • CONT. - Continuous
  • CFM: Cubic Feet per Minute
  • CFS: Cubic Feet per Second
  • CMU: Concrete Masonry Unit
  • CU. FT.: Cubic Feet
  • CU. YD.: Cubic Yard

    D

    • D.S. - Downspout
    • DIA. - Diameter
    • DIM. - Dimension
    • DN. - Down
    • DP: Damp proofing, Dew Point or Distribution Panel
    • DWG -Drawing

    E

    • EA. - Each
    • E.F. - Exhaust fan
    • EXC: Excavate
    • E.W. - Each way
    • EXT. -Exterior

    F

    • FACP: Fire Alarm Control Panel
    • F.C.O. - Floor clean out
    • F.D. - Floor drain
    • FIN. - Finish
    • F.F.L- Finished floor level
    • FRPF: Fireproof

    G

    • GALV. - Galvanized
    • G.C. - General Contractor
    • G.F.C.I. - Ground Fault Circuit Interrupt
    • G.F.I. - Ground Fault Interrupt
    • GPM: Gallons Per Minute
    • G.T. - Glazed Tile
    • GYP. - Gypsum

    H

    • H.B. - Hose Bib
    • HDCP: Handicapped, better if referred as 'Accessible'
    • HV: High Voltage
    • H.V.A.C. - Heating, Venting and Air Conditioning
    • H.W. - Hot water

    I

    • IE: Invert Elevation
    • IN: Inch
    • INSUL. - Insulation
    • INT. - Interior
    • INV: Invert

    J

    • J-Box - Junction box
    • JCT. - Junction
    • JST. - Joist

    K

    • KW: Kilowatt

    L

    • LFT. - Linear feet
    • LL: Live Load
    • LT. - Light
    • LTG. - Lighting
    • L.V.L. - Laminated Veneer Lumber

    M

    • MH- Manhole
    • MAS. - Masonry
    • MTL. - Material
    • MFG. - Manufacturing
    • MIN. - Minimum

    N

    • NEC: National Electrical Code
    • N.I.C- Not In Contract
    • N.T.S. - Not to scale

    O

    • O.C. - On center
    • O.D. - Outside diameter
    • OPNG. - Opening or Rough Opening

    P

    • PCC- Portland Cement Concrete
    • PL. - Plaster
    • P.L. - Property line
    • PLYWD. - Plywood
    • P.S.F. - Pounds per square foot
    • P.S.I. - Pounds per square inch
    • PTD: Painted

    R

    • RC- Reinforced Concrete
    • RD: Roof Drain, Round or Receptacle Distribution Panel
    • R.D.L. - Roof drain leader
    • REBAR: Reinforcing Bar
    • R.O. - Rough Opening
    • R.O.W. - Right of way
    • REINF. - Reinforced

    S

    • SAN. - Sanitary
    • S.D. - Smoke detector
    • SECT. - Section
    • SHT. - Sheet
    • SHT'G. - Sheathing
    • SPECS. - Specifications
    • SQ.FT. - Square feet
    • SQ. IN. - Square inches
    • SS: Stainless Steel, Set Screw, Soil Stack, Service Sink and/or Slop Sink
    • STD. - Standard
    • STL. - Steel
    • S.Y. - Square yard

    T

    • T&B: Top and Bottom
    • T&G- Tongue and Grooved
    • T.O. - Top of
    • T.O.B. - Top of Beam
    • T.O.C. - Top of curb/ Top of Concrete
    • T.O.F. - Top of footing
    • T.O.J. - Top of joist
    • T.O.M. - Top of masonry
    • T.O.W. - Top of wall
    • TTC: Telephone Terminal Closet

    U

    • UON: Unless Otherwise Noted

    V

    • V.B. - Vapor barrier
    • V.I.F. - Verify in field
    • VA. - Voltage

    W

    • W.C. - Toilet (water closet)
    • WD. - Wood
    • WDW. - Window
    • W.I. - Wrought Iron
    • W.I.C. - Walk-In Closet
    • WL- Water level
    • WP. - Weatherproof
    • WS: Weather-stripping OR Water Stop
    • WT. - Weight
    • WTR. HTR. - Water Heater
    • W/O: Without