Building and Construction Drawing Abbreviations
- AFF – Above finished floor
- AFG – Above finished grade
- BOF – Bottom of footing
- BOW – Bottom of wall
- BP or B/P – Blueprint
- CAD – Computer-aided drafting
- DWG – Drawing
- Exc – Excavate
- FAO – Finish all over
- FFL – Finished floor level
- FL – Floor level
- FRPF – Fireproof
- GC – General contractor
- IE – Invert elevation
- HV – High voltage
- IAW – In accordance with
- LDD – Limited dimension drawing
- Jst – Joist
- MFG – Manufacturing
- NIC – Not in contract
- PL – Property line
- REBAR – Reinforcing bar
- REQD – Required
- Reinf – Reinforced
- San – Sanitary
- TOB – Top of beam
- TOC – Top of curb or top of concrete
- TOF – Top of footing
- TOJ – Top of joist
- TOM – Top of masonry
- TOW – Top of wall
- VA – Voltage
- WL – Water level
Floor Plan Abbreviations
- A/C – Air conditioner
- BSMT – Basement
- CL – Closet
- CLG – Ceiling
- CSINK – Countersink
- CTYD – Courtyard
- DS – Downspout
- EF – Exhaust fan
- Ext – Exterior
- FACP – Fire alarm control panel
- FCO – Floor cleanout
- FD – Floor drain
- HDCP – Handicapped
- HVAC – Heating, ventilation and air conditioning
- HW – Hot water
- Int – Interior
- J-Box – Junction box
- LH – Left hand
- Lt – Light
- Ltg – Lighting
- MH – Manhole
- Mas – Masonry
- OPNG – Opening or rough opening
- RD – Roof drain
- RDL – Roof drain leader
- RH – Right hand
- RM – Room
- SC – Sharp corners
- SD – Smoke detector
- SPK – Sprinkler
- T&G- Tongue and groove
- TELE – Telephone
- TLT – Toilet
- Wdw – Window
- WIC – Walk-in closet
- Wtr. Htr. – Water heater
Materials Abbreviations for Drawings
- AWG – American wire gauge
- ALUM – Aluminum
- BOM – Bill of material
- BV – Butterfly valve
- CI – Cast iron
- CMU – Concrete masonry unit
- CPT – Carpet
- CRES – Corrosion-resistant steel
- DP – Damp-proofing; distribution panel
- Fin – Finish
- FTG – Fitting
- Galv.- Galvanized
- G.T. – Glazed tile
- Gyp. – Gypsum
- HB – Hose bib
- HDPE – High-density polyethylene
- HRS – Hot rolled steel
- Insul. – Insulation
- LM – List of materials
- LVL – Laminated veneer lumber
- Mtl – Material
- PCS – Pieces
- PL – Plaster
- Plywd – Plywood
- Ptd – Painted
- PVC – Polyvinyl chloride
- RC – Reinforced concrete
- Sht – Sheet
- Sht’g – Sheathing
- SS – Stainless steel
- Stl – Steel
- Wd – Wood
- WI – Wrought iron
- WS – Weatherstripping or water stop
Measurements & Technical Abbreviations
- BOT – Bottom
- CC – Center to center
- CFM – Cubic feet per minute
- CFS – Cubic feet per second
- CL – Centerline
- Cont – Continuous
- CU. FT. – Cubic feet
- CU. YD. – Cubic yard
- Dia – Diameter
- Dim – Dimension
- DN – Down
- Ea – Each
- ED – Edge distance
- EQ – Equal
- EW – Each way
- FS – Far side
- GPM – Gallons per minute
- ID – Inner diameter
- In – Inch
- Inv – Invert
- Jct – Junction
- kW – Kilowatt
- LFT – Linear feet
- LL – Live load
- MAX – Maximum
- MBW – Measurement between wires
- Min – Minimum
- MOW – Measurement over wires
- NTS – Not to scale
- OAL – Overall length
- OC – On center
- OD – Outside diameter
- PSF – Pounds per square foot
- PSI – Pounds per square inch
- QTY – Quantity
- R – Radius
- Specs – Specifications
- SQ. FT. – Square feet
- SQ. IN.: Square inches
- Std – standard
- SY – Square yard
- T&B – Top and bottom
- TO – Top of
- W/O – Without
- Wt – Weight
Professional Organization & Standards Abbreviations
- ACI – American Concrete Institute
- ADA – Americans with Disabilities Act of 1992
- AIA – American Institute of Architects or the American Insurance Association
- AISC – American Institute of Steel Construction
- AISI – American and Steel Institute
- ANSI – American National Standards Institute
- ASCE – American Society of Civil Engineers
- ASME – American Society of Mechanical Engineers
- ASTM – American Society for Testing and Materials
- IEEE – Institute of Electrical and Electronics Engineers
- ISO – International Organization for Standards
- NEC – National Electrical Code
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