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Construction Drawing Abbreviations

The following is a list of abbreviations found on a typical set of construction drawings designed to help you interpret information on your blueprints.

A

  • ABV. - Above
  • A.B. - Anchor Bolt
  • A/C - Air Conditioner
  • A.D. - Access Door
  • ADD. - Addition
  • ADJ. - Adjust
  • A.F.F. - Above Finished Floor
  • A.F.G. - Above Finished Grade
  • A.G. - Above Grade
  • ALT. - Alternate
  • APP'D. - Approved
  • ARCH. - Architect,
  • Architectural
  • ASPH. - Asphalt

B

  • B.C. - Bookcase
  • BD. - Board
  • B.L. - Building Line
  • BLDG. - Building
  • BLK. - Block
  • BM. - Beam
  • B.N. - Boundary nailing
  • B.O. - Bottom of
  • B.O.F. - Bottom of footing
  • B.O.W. - Bottom of wall
  • BRG. - Bearing
  • B.U. - Built up
  • BTM. - Bottom

C

  • CSMNT. - Casement
  • CABT. - Cabinet
  • C.B. - Catch Basin
  • C.D. - Construction document
  • CEM. - Cement
  • C.F.M. - Cubic Feet per Minute
  • C.L. - Center Line
  • CH. - Channel
  • C.I. - Cast Iron
  • C.I.P. - Cast in Place
  • CL. - Closet
  • CLG. - Ceiling
  • C.O. - Clean Out
  • C.O. - Cased Opening
  • COL. - Column
  • CONT. - Continuous
  • CONTR. - Contractor
  • CONC. - Concrete
  • C.T. - Ceramic Tile

D

  • d - Penny
  • D.S. - Down spout
  • D/W - Dishwasher
  • DBL. - Double
  • DEMO. - Demolition
  • DIA. - Diameter
  • DIM. - Dimension
  • D.L. - Dead Load
  • DN. - Down
  • DR. - Door

E

  • EA. - Each
  • E.F. - Exhaust fan
  • E.J. - Expansion joint
  • E.N. - End nailing
  • ELEV. - Elevation
  • ELECT. - Electric, electrical
  • EQ. - Equal
  • EQUIP. - Equipment
  • EST. - Estimate
  • E.W. - Each way
  • EXH. - Exhaust
  • EXIST. - Existing
  • EXT. - Exterior

F

  • F.A. - Fire alarm
  • F.C.O. - Floor clean out
  • F.D. - Floor drain
  • F.E. - Fire extinguisher
  • F.N. - Field nailing
  • FAB. - Fabricate
  • FDN. - Foundation
  • FIN. - Finish
  • FLR. - Floor
  • FLG. - Flooring
  • FLUOR. - Fluorescent
  • FURN. - Furnace

G

  • GA. - Gauge
  • GALV. - Galvanized
  • GAR. - Garage
  • G.C. - General Contractor
  • G.F.C.I. - Ground Fault Circuit Interrupt
  • G.F.I. - Ground Fault Interrupt
  • GL. - Glass
  • G.M. - Grade mark
  • GR. - Grille
  • G.T. - Glazed tile
  • GYP. - Gypsum

H

  • H.B. - Hose bib
  • H.C. - Hollow core
  • HDBD. - Hardboard
  • HDW. - Hardware
  • HGT. - Height
  • HOR. - Horizontal
  • HR. - Hour
  • H.R. - Handrail
  • HTR. - Heater
  • H.V.A.C. - Heating, Venting and Air Conditioning
  • H.W. - Hot water

I

  • I.C.F. - Insulated Concrete Form 
  • I.D. - Inside diameter
  • I.F. - Inside Face
  • INCL. - Inclusive, including
  • INV. - Invert
  • INSUL. - Insulation
  • INT. - Interior

J

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

K

  • K.-D. - Knock Down
  • K.D. - Kiln dried
  • K.O. - Knock out

L

  • LFT. - Linear feet
  • LAM. - Laminate
  • LAT. - Lateral
  • LAV. - Lavatory
  • LD. - Lead
  • LIN. - Linear
  • LINO. - Linoleum
  • LT. - Light
  • LTG. - Lighting
  • L.V.L. - Laminated Veneer Lumber

M

  • M.B. - Machine bolt
  • M.O. - Masonry opening
  • MAR. - Marble
  • MAS. - Masonry
  • MTL. - Material
  • MAX. - Maximum
  • MECH. - Mechanical
  • MED. - Medium
  • MFG. - Manufacturing
  • MIN. - Minimum
  • MOD. - Modular
  • MTL. - Metal (steel)
  • MUL. - Mullion

N

  • N.T.S. - Not to scale
  • N.C.M. - Non-corrosive metal
  • N.F.C. - Not for construction
  • NLR. - Nailer
  • NO. - Number
  • NOM. - Nominal

O

  • O.C. - On center
  • O.D. - Outside diameter
  • O.R. - Outside radius
  • O.H. - Overhead
  • OPNG. - Opening

P

  • P. - Paint
  • PART. - Partition
  • PAV. - Pavement
  • P.C. - Pre-Cast Concrete
  • PERF. - Perforated
  • PL. - Plaster
  • PLT. - Plate
  • P.L. - Property line
  • PLAS. - Plastic
  • P.L.V. - Plastic laminate veneer
  • PLYWD. - Plywood
  • PORC. - Porcelain
  • P.S.F. - Pounds per square foot
  • P.S.I. - Pounds per square inch
  • P.V.C. - Polyvinyl chloride
  • PWR. - Power

Q

  • Q.T. - Quarry tile
  • QTY. - Quantity

R

  • RAD. - Radius
  • R.D. - Roof drain
  • R.D.L. - Roof drain leader
  • R.O. - Rough Opening
  • R.O.W. - Right of way
  • REFG. - Refrigerator
  • REF. - Reference
  • REINF. - Reinforced
  • RET. - Return
  • REV. - Revision
  • RM. - Room
  • RMV. - Remove

S

  • SAN. - Sanitary
  • S.C. - Solid core
  • S.C. - Self-Closing
  • SCHED. - Schedule
  • S.D. - Smoke detector
  • SECT. - Section
  • SHT. - Sheet
  • SHT'G. - Sheathing
  • SIM. - Similar
  • SPECS. - Specifications
  • SQ.FT. - Square feet
  • SQ. IN. - Square inches
  • STD. - Standard
  • STL. - Steel
  • S.Y. - Square yard
  • SYS. - System

T

  • T&G - Tongue and groove
  • T.B. - Through bolt
  • T.O. - Top of
  • T.O.B. - Top of Beam
  • T.O.C. - Top of curb
  • T.O.F. - Top of footing
  • T.O.J. - Top of joist
  • T.O.M. - Top of masonry
  • T.O.W. - Top of wall
  • T.S. - Tube steel
  • TH. - Threshold
  • THR. - Threaded
  • TYP. - Typical

U

  • UNF. - Unfinished

V

  • V.B. - Vapor barrier
  • V.I.F. - Verify in field
  • VA. - Voltage
  • VCT. - Vinyl composition tile

W

  • W.C. - Toilet (water closet)
  • WDW. - Window
  • WCT. - Wainscot
  • WP. - Weatherproof
  • WT. - Weight
  • WTR. HTR. - Water Heater
  • WD. - Wood
  • W.I. - Wrought Iron
  • W.I.C. - Walk In Closet

Y

  • YD. - Yard

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