Construction Abbreviations – A Decent List

2-PSS: Two-Part Polysulfide Sealant

2-PUMS: Two-Part Polyurethane Modified Sealant

@  At (the rate of)

&   And

”    Inch; Ditto (which means “same as above”)

#   Number. or Pound

[circle with diagonal slash through it]   Diameter, Round, Phase

A:  Area, Ampere; Acre; Alcove; Compressed Air Line

AB:  Anchor Bolt; Asbestos Board

ABV: Above

AC:  Air Conditioning, Alternating Current, Acoustical

ACC: Access

ACF: Architectural Concrete Finish

ACFL: Access Floor

ACI: American Concrete Institute

ACL: Across the Line

ACOUST: Acoustical

ACPL: Acoustical Plaster

ACR: Acrylic

ACST: Acoustic

ACT: Acoustical Tile; Actual

AD: Access Door, Area Drain

ADA: Americans with Disabilities Act of 1992

ADAAG: Americans with Disabilities Act Architectural Guidelines

ADD: Addendum; Addition

ADDL: Additional

ADH: Adhesive

ADJ: Adjust, Adjustable, Adjacent

AF: Above the Floor

AFF: Above Finished Floor

AGA: American Gas Association

AGG: Aggregate

AGGR: Aggregate

AIA: American Institute of Architects, American Insurance Association

AIC: Amperes Interrupting Circuit

AIEE: American Institute of Electrical Engineers

AISC: American Institute of Steel Construction

AL: Aluminum

ALM: Alarm

ALT: Alternate, Alteration; Altitude

ALUM: Aluminum

ALS: Acrylic Latex Sealant

AMB: Ambient

AMP: Ampere, Ampacity

AMPY: Ampere

AMT: Amount

AN: Anode

ANCH: Anchor, Anchorage

ANN: Annunciator

ANOD: Anodized

ANT: Antenna

AP:  Access Panel

APPD: Approved

APPROX: Approximate

APRVD: Approved

APT: Apartment

APX: Approximate

AR: Acid Resisting

ARCH: Architect, Architectural

ARS: Asbestos Roof Shingles

AS:  Acoustic Sealant

ASB: Asbestos

ASC: Above Suspended Ceiling

ASCE: American Society of Civil Engineers

ASME: American Society of Mechanical Engineers

ASPH: Asphalt

ASSEM: Assemble

ASSOC: Association; Associate

ASSY: Assembly

ASTM: American Society for Testing and Materials

AT: Acoustical Tile; Asphalt Tile

ATC: Acoustical Tile Ceiling

ATTEN: Attenuation

ATM: Automatic Teller Machine; Atmospheric

AUTH: Authorized

AUTO: Automatic

AVG: Average

AW: Acid Waste

AWG: American Wire Gauge

AWM: Automatic Washing Machine

AWS: American Welding Society

AWWA: American Water Works Association

AX: Axis

B:  Boiler, Bathroom, Bidet

B TO B: Back to Back

B & B: Balled and  Burlapped, Bell and Bell

B & F: Bell and Flange

B & S: Bell and Spigot, Brown & Sharp

B/:  Bottom (of)

BBD: Bulletin Board

BA: Bulb Angle

BAL: Balance, Ballast

BAF: Baffle

BB:  Buffalo Box, Ball Bearing,, Bulletin Board

BBL: Barrel

BC: Broom Closet

BD:  Board, Blow Down (pipe)

BDL: Bundle

BDY: Boundary

BDRM: Bedroom

BEL: Below

BET: Between

BETW: Between

BEV: Bevel

BF:  Board Foot, Back Face, Bottom Face, Both Faces, Boiler Feed

BG: Bag (e.g., of cement)

BHP: Brake Horsepower

BHD: Bulkhead

BIT: Bituminous

BJF: Bituminous Joint Filler

BKR: Breaker

BL:  Base Line, Building Line, Block

BLDG: Building

BLK: Block

BLKG: Blocking

BLO: Blower

BLR: Boiler

BLT: Borrowed Lite, Bullet Tips (Hinges)

BLT-IN: Built-In

BM:  Beam, Bench Mark

BMT: Butyl Mastic Tape Sealant

BN:  Bullnose

BNDG: Bending (re-bars)

BNT: Bent

BO: Blow Off

BOT: Bottom

BP:  Base Plate, Blueprint, Bypass

BPL: Bearing Plate

BR:  Bedroom, Brick, Brass, Boiler Room Branch

BRDG: Bridge, Bridging

BRG: Bearing

BRK: Brick

BRKR: Breaker

BRKT: Bracket

BRS: Butyl Rubber Sealant, Brass

BRZ: Bronze

BRZG: Brazing

BS:  Both Sides, Backset, Bluestone

BSMT: Basement

BT: Bathtub, Bolt

BTR: Better

BTU: British Thermal Units

BTUH: British Thermal Units per Hour

BUR: Built-up Roof

BUZ: Buzzer

BV:  Butterfly Valve

BVL: Bevelled

BW: Both Ways

BWV: Back Water Valve

BYP: By Pass

C:  Courses, Curb, Channel, Degrees Celsius, Clock Outlet, Calcimine

C/C: Center to Center

C TO C: Center to Center

CA:  Compressed Air

CAB: Cabinet

CAD: Cadmium, Computer-Aided Drafting

CAIS: Caisson

CAP: Capacity

CAR: Carpet

CARP: Carpenter

CAT: Catalog

CAV: Cavity

CB:  Catch Basin, Concrete Block,

Cast Brass, Coal Bin

CBL: Concrete Block

CBX: Cast Box Strike

CC:  Cubic Centimeter

CCT: Circuit

CCW: Counter Clockwise

CCTV: Closed Circuit TV

CD:  Cold Drawn, Cadmium

CDS: Cold Drawn Steel

CEL: Cellar

CEM: Cement

CEM AB: Cement Asbestos Board

Cem P: Cement Water Paint

CER: Ceramic

CF:  Cubic Feet

CFL: Counterflashing

CFM: Cubic Feet per Minute

CFS: Cubic Feet per Second

CFT: Cubic Foot

CG:  Corner Guard

CH: Coat Hook

CHB: Chalk Board

CHR: Chilled Water Return

CHAM: Chamfer

CHAN: Channel

CHBD: Chalkboard

CHS: Chilled Water Supply

C.I.: Cast Iron

CI:  Cast Iron

CIN BL: Cinder Block

CIP: Cast Iron Pipe, Cast-in-Place

CIR: Circle, Circular, Circuit

CIRC: Circumference

CISP: Cast Iron Soil/sewer Pipe

CITG: Clear Insulating Tempered Glass

CJ:  Control Joint

CJF: Cork Joint Filler

CK: Caulking

CKT: Circuit

CL:  Centerline, Clearance, Closing, Closure, Class, Closet

CLG: Ceiling

CLKG: Caulking

CLH: Clothes Line Hook

CLL: Contract Limit Line

CLO: Closet

CLP: Clamp

CLR: Clear

CLR OPG: Clear Opening

CLS: Closure

CM: Circular Mil (1/1000 inch),

Center Matched

CMP: Corrugated Metal Pipe

CMT: Ceramic Mosaic Tile

CMU: Concrete Masonry Unit

CMUP: Concrete Masonry Unit Painted

CND: Condition, Conduit

CNDS: Condensate

CNTR: Center, Counter

CNVR: Conveyor

COAX: Coaxial

C.O.: Cased Opening

CO:  Company, Cleanout, Cased Opening, Cut Out

COD: Cleanout Door

CO & DP: Cleanout & Deck Plate

COEF: Coefficient

COL: Column

COM: Common

COMB: Combination, Combustion

COML: Commercial

COMM ED: Commonwealth Edison

COMP: Composition, Compressed

COMPO: Composition

COMPT: Compartment

CON: Construction

CONC: Concrete

CONCP: Concrete Painted

COND: Condenser, Conduit

CONN: Connection

CONST: Construction

CONSTR: Construction

CONT: Continuous, Continue, Control

CONTR: Contractor

CONV: Convector, Convenience

COP: Copper

COR: Corner, Corridor

CORR: Corridor, Corrugate

COV: Cover

CP:  Cathodic Protection, Clothes Pole,  Cesspool

CPE: Chlorinated Polyethylene

CPL: Cement Plaster

CPP: Cement Plaster Painted

CPR: Copper

CPT: Carpet

CR: Chromium (plated), Curtain Rod

CRPT: Carpet

CRS: Course, Cold Rolled Steel

CS:  Countersink, Cast Steel, Cast Stone, Commercial Standard

CSG: Casing

CSK: Countersink

CSMT: Casement

CSN: Caisson

CSS: Countersunk Screw

CSTG: Casting

CT:  Ceramic Tile, Cork Tile,

Cone Tip (hinges)

CTD: Coated

CTR: Center, Counter

CTSC: Communications Systems Terminal Cabinet

CTSK: Countersunk

CTWT: Counterweight

CU:  Copper, Cubic, Coefficient of Utilization

CU. FT.: Cubic Feet

CU. YD.: Cubic Yard

CUR: Current

CV:  Check Valve

CW: Clockwise, Cold Water

CWP: Circulating Water Pump

CWR: Condensate Waste Return

CWS: Condensate Waste Supply

CY:  Cubic Yard, Cycle

CYL: Cylinder

CYL L: Cylinder Lock

D:  Deep, Depth, Drop, Drain

D & M: Dressed & Matched

DA: Double Acting

DB:  Decibel

DBL: Double

DBT: Drybulb Temperature

DC:  Direct Current

DCV: Detector Check Valve

DD: Driveway Drain, Deck Drain

DEG: Degree

DEGC: Degree Celcius

DEGF: Degree Farenheit

DEM: Demolish

DEMO: Demolition

DEP: Dpressed

DEPT: Department

DET: Detail

DF:  Drinking Fountain

DH: Double Hung

DIAG: Diagonal

DIA: Diameter

DIAM: Diameter

DIFF: Diffuser

DIM: Dimension

DISL: Disposal

DISP: Dispenser

DIV: Division

DL:  Dead Load

DMH: Drop Manhole

DMT: Demountable

DN:  Down

DO:  Ditto, or Door Opening

DP:  Dampproofing, Dew Point, Distribution Panel

DPDT: Double Pole Double Throw

DPST: Double Pole Single Throw

DPR: Damper

DR:  Door, Drain, Dining Room

DRBD: Drainboard

DS:  Downspout, Disconnect Switch, Door Switch

DSP: Dry Standpipe

DT:  Drain Tile

DTL: Detail

DVTL: Dovetail

DW: Dumbwaiter, Distilled Water

DWG: Drawing

DWGS: Drawings

DWL: Dowel

DWP: Drywall, Painted

DWR: Drawer

DS:  Downspout

DSP: Dry Standpipe

DX:  Direct Expansion, Duplex

E:  East, Enamel, Exhaust

E TO E: End to End

EA:  Each

EB:  Expansion Bolt

EC:  Exposed Construction

ECC: Eccentric

ECP: Exposed Construction Painted

EDR: Equivalent Direct Radiation

EE:  Each End

EF:  Each Face

EFTS: Expanding Foam Tape Sealant

EG: Edge Grain

EIFS: Exterior Insulation and Finish System

EJ:  Expansion Joint

EJECT: Ejector

EL:  Elevation, Elevator

ELB: Elbow

ELEC: Electrical

ELECT: Electrical

ELEV: Elevator, Elevation

ELP: Emergency Lighting Panel

EM:  Emergency

EMER: Emergency

ENAM: Enamel

ENCL: Enclosure

ENG: Engineer

ENGR: Engineer

ENJF: Expanded Neoprene Joint Filler

ENT: Entrance

ENTR: Entrance

EP: Electrical Panelboard, Explosion Proof

EPDM: Ethylene Propylene Diene Monomer

EPJF: Expanded Polyethelene Joint Filler

EQ:  Equal

EQP: Equipment

EQPT: Equipment

EQUIP: Equipment

ERP: Emergency Receptacle Panel

ESC: Escalator

EST: Estimate

EVAP: Evaporator

EW: Each Way

EWC: Electric Water Cooler

EW & C: Electric Wiring and Communication

EWH: Electric Water Heater

EX:  Exposed Construction, Exit

EXC: Excavate

EXCAV: Excavate

EXEC: Executive

EXG: Existing

EXH: Exhaust

EXH AIR: Exhaust Air

EXIST: Existing

EXP: Expansion, Exposed

EXPN: Expansion

EXPP: Existing Patched and Painted

EXS: Extra Strong

EXT: Exterior, Extinguish

EXTR: Extrude

F:  Degrees Fahrenheit, Fuse

F TO F: Face to Face

FA:  Fire Alarm, Fresh Air

FAB: Fabricate

FABR: Fabricate

FACP: Fire Alarm Control Panel

FAG: Fire Alarm Gong

FAO: Finish All Over

FAR: Floor Area Ratio

FAST: Fastener, Fasten

FB:  Flat Bar, Face Brick, Floor Box

FBD: Fiberboard

FBM: Foot Board Measure

FBP: Fabric Panel

FBRK: Fire Brick

FC:  File Cabinet, Foot Candle, Fault Current

FD:  Floor drain

FDC: Fire Department Connection

FDN: Foundation

FDTN: Foundation

FE:  Fire Extinguisher

FEC: Fire Extinguisher Cabinet

FF:  Far Face, Finished Floor, Factory Finish

FFE: Finished Floor Elevation

FF&E: Fixtures, Furnishings & Equipment

FFL: Finished Floor Line

FGL: Fiberglass

FGR: Fiberglass reinforced

FH:  Flat Head, Fire Hose

FHC: Fire Hose Cabinet

FHMS: Flat head machine screw

FHR: Fire Hose Rack

FHS: Fire Hose Station

FHWS: Flat Head Wood Screw

FHY: Fire Hydrant

FIL: Fillet

FIN: Finish, finished

FITG: Fitting

FIX: Fixture

FIXT: Fixture

FL:  Floor, Fire Line

FLASH: Flashing

FLG: Flooring

FLEX: Flexible

FLG: Flange, Flashing, Flooring

FLR: Floor

FLUOR: Fluorescent

FLX: Flexible

FM:  Fire Main, Factory Mutual Company

FND: Feminine Napkin Dispenser, Foundation

FO:  Finished Opening

FOB: Free On Board

FOC: Face of Concrete

FOF: Face of Finish

FOS: Face of Studs

FP:  Fireproof

FPL: Fireplace

FPM: Feet per minute

FPRF: Fireproof

FPS: Feet per Second

FR:  Frame, Front, Fire Riser

FRG: Forged

FRM: Frame

FRPF: Fireproof

FRT: Fire Retardant

FS:  Full Size, Far Side, Federal Standards, Fused Switch, Floor Sink

FSCW: Flush Solid Core Wood

FT:  Foot, Feet, Fully Tempered

FTG: Footing, Fitting

FUR: Furred

FURN: Furnish, Furniture

FURR: Furring

FUT: Future

FVC: Fire Valve Cabinet

G:  Gas, Girder, Gutter, Gram

GA:  Gauge, Gage

GAGE: Gauge

GAL: Gallon

GALV: Galvanized

GB:  Grab Bar, Glass Block, Gypsum Board

GC:  General Contractor

GCMU: Glazed Concrete Masonry Unit

GD:  Guard, Grade, Gutter Drain

GEN: General, Generator

GENL: General

GF: Ground Face

GFCI: Ground Fault Circuit Interrupted

GFI: Ground Fault Interrupted

GFRC: Glass Fiber Reinforced Concrete

GI:  Galvanized Iron

GKT: Gasket

GL:  Glass

GL BLK: Glass Block

GLB: Glass Block

GLVA: Globe Valve

GLZ: Glaze

GMU: Glazed Masonry Unit

GND: Ground

GOVT: Government

GP:  Galvanized Pipe

GPDW: Gypsum Drywall

GPH: Gallons Per Hour

GPL: Gypsum Lath

GPM: Gallons Per Minute

GPP: Gypsum Plaster Painted

GPPL: Gypsum Plaster

GPS: Gallons Per Second

GR:  Grade, Grille, Granite

GRAN: Granular, Granite

GRND: Ground

GRTG: Grating

GSS: Galvanized Sheet Steel

GSU: Glazed Structural Unit

GT: Grout

GV: Galvanized

GVA: Gate Valve

GVL: Gravel

GYP: Gypsum

GYP BD: Gypsum Board

H:  High

HA:  Hectare

HB:  Hose Bib

HBD: Hardboard

HC:  Hollow Core, Handicapped (better called Accessible”)

HCT: Hollow Clay Tile

HD:  Head, Heavy Duty

HDCP: Handicapped (better called “Accessible”)

HDN: Harden

HDR: Header

HDW: Hardware

HDWD: Hardwood

HDWE: Hardware

HEX: Hexagonal

HGR: Hanger

HGT: Height

HH:  Handhole

HHMB: Hex Head Machine Bolt

HID: High Intensity Discharge

HK:  Hook or Hooks

HKD: Hooked (re-bars)

HL: Hydrant Line

HM: Hollow Metal

HMP: Hollow Metal, Painted

HNCG: Hollow Neoprene Compression Gasket

HOR: Horizontal

HORIZ: Horizontal

HOSP: Hospital

HP:  High Point, High Pressure, Horse Power

HPS: High Pressure Sodium, High Pressure Steam

HR:  Hour

HRS: Hot Rolled Steel, Hours

HS:  Heat Strengthened

HSG: Housing

HT:  Height, Heat, High Tension Duct

HTG: Heating

HTR: Heater

HTW: High Temperature Water

HV:  High Voltage

HVAC: Heating, Ventilating & Air Conditioning

HVY: Heavy

HW: Hot Water, Heavy Wall

HWC: Hot Water Circulating, Heavy Wall Conduit

HWD: Hardwood

HWH: Hot Water Heater

HWR: Hot Water Recirculating Return

HWS: Hot Water Supply

HWY: Highway

HYD: Hydraulic

HYDRO: Hydrostatic

HZ:  Hertz (Cycles Per Second)

I:   Iron, Current (electrical)

IBV: Indicating Butterfly Valve

IC: Interrupting Capacity

ID:  Inside Diameter

IE:  Invert Elevation

ILK: Interlock

IMH: Inlet Manhole

IN:  Inch

INC: Incandescent

INCAND: Incandescent

INCIN: Incinerator

INCL: Incline, Include

INCR: Increase

INFO: Information

INS: Insulate, Insulation

INSP: Inspect

INSTL: Install

INSUL: Insulation

INT: Interior, Internal

INTERM: Intermediate

INTM: Intermediate

INV: Invert

IP:  Iron Pipe

IPS:  Iron Pipe Size

IW:  Indirect Waste

J:   Joist

J-BOX: Junction Box

JAN: Janitor

JB:  Junction Box

JC:  Janitor’s Closet

JCT: Junction

JF:  Joint Filler

JST: Joist

JT:  Joint

K:  Kilopound (1000 pounds), Kelvin (temperature)

KAL: Kalamein

KCP: Keene’s Cement Plaster

KG:  Kilogram

KIP: Kilopound (1000 pounds)

KIT: Kitchen

KM:  Kilometer

KO:  Knockout

KP:  Kickplate

KPL: Kickplate

KS:  Kitchen Sink

KVA: Kilovolt-Ampere

KW: Kilowatt

KWH: Kilowatt Hour

KWHR: Kilowatt Hour

L:   Angle, Left, Length, Lighting Panel, Long, Line

LA:  Landscape Architect, Lightning Arrester

LAB: Laboratory, Labor

LAD: Ladder

LAM: Laminate, Laminated

LAT: Lateral

LAV: Lavatory

LB:  Pound (weight), Lag Bolt

LBL: Label

LBR: Lumber

LC:  Light Control, Lead Covered

LCD: Liquid Crystal Diode

LCL: Linen Closet

LCM: Lead Coated Metal

LD: Leader Drain

LH:  Left Hand

LIB:  Library

LIBR: Library

LIN: Linear

LINO: Linoleum

LIQ: Liquid

LKR: Locker

LL:  Live Load

LMS: Limestone

LN: Length

LNDG: Landing

LNTL: Lintel

LOC: Locate

LOCS: Locations

LP:  Low Point, Low Pressure, Lighting Panel, Light Proof

LPS: Low Pressure Sodium, Low Pressure Steam

LR:  Living Room

LS:  Limestone, Loud Speaker

LT:  Light, Low Tension Duct, Laundry Tray

LTG: Lighting

LTL: Lintel

LT WT: Lightweight

LV:  Low Voltage

LVR: Louver

LW: Light Weight

LWC: Light Weight Concrete

LWDP: Louvered Wood Door, Painted

M:  Meter, Motor, Thousand (brick), Bending Moment

MACH: Machine

MAINT: Maintenance

MAN; Manual

MAR: Marble

MARB: Marble

MAS: Masonry

MAT: Material

MATL: Material

MAX: Maximum

MB:  Mail Box, Machine Bolt, Mop Basin

MC: Medicine Cabinet, Mineral Core

MCC: Motor Control Center

MCM: Thousand Circular Mils (electrical wire size)

ME:  Mechanical Engineer

MECH: Mechanical

MED: Medium

MED CAB: Medicine Cabinet

MEMB: Membrane

MERC: Mercury Vapor

MET: Metal

MEZZ: Mezzanine

MFD: Manufactured, Metal Floor Deck

MFG: Manufacturer, Manufacturing

MFR: Manufacture, Manufacturer

MH: Manhole

MI:  Malleable Iron, Miles

MIKE: Microphone

MIN: Minimum

MIR: Mirror

MISC: Miscellaneous

MK:  Mark

ML&P: Metal Lath & Plaster

MLD: Molding

MLDG: Molding

MM: Millimeter

MMB: Membrane

MO: Masonry Opening

MOD: Module

MONO: Monolithic

MOV: Movable

MP: Metal Acoustal Panel

MPS: Medium Pressure Steam

MR: Mop Receptor

MRD: Metal Roof Deck

MT: Mount, Mounted

MTD: Mounted

MTL: Material, Metal

MTR: Motor

MUL: Mullion

MULL: Mullion

MV:  Mercury Vapor

MWP: Maximum Working Pressure

MWK: Millwork

N:  North, Nitrogen

NAP: Napkin

NAT: Natural

NATL: Natural

NB:  “Nota Bene”  Latin phrase for “Take Special Note”

NC:  Normally Closed, Noise Criteria

NEC: National Electrical Code

NEUT: Neutral

NF:  Near Face

NFWH: Non-freeze Wall Hydrant

NI:  Nickel

NIC: Not In Contract

NK:  Neck

NMT: Non-Metallic

NO:  Number, Normally Open

NOM: Nominal

NR:  Noise Reduction

NRC: Noise Reduction Coefficient

NRP: Non-Removable Pin

NRS: Non Rising Steam Valve

NS:  Near Side

NTS: Not To Scale

O:  Oxygen

O TO O: Out to Out

OA:  Outside Air, Overall

OB: Obscure

OBS: Obscure

OC:  On Center

OD:  Outside Diameter

OF:  Outside Face

OFF: Office

OH:  Overhead

OHD: Overhead Door

OHMS: Oval Head Machine Screw

OHWS: Oval Head Wood Screw

OI:  Ornamental Iron

OP:  Opaque

OPG: Opening

OPNG: Opening

OPP: Opposite

OPP H: Opposite Hand

OR:  Outside Radius

ORN: Ornamental

OSD Open Sight Drain

OS&Y: Outside Screw & Yoke (valve)

OUT: Outlet

OVFL: Overflow

OW: Open Waste

OZ:  Ounce

P:  Pitch, Power Panel, Paint

P. LAM: Plastic Laminate

P SL: Pipe Sleeve

PA:  Public Address

PAF: Powder Actuated Fasteners

PAR: Parallel

PARTN: Partition

PASS: Passage, Passenger

PB:  Pull Box, Push Button, Panic Bar

PBD: Particle Board

PBMT: Preshimmed Butyl Mastic Sealant Tape

PB STA: Push Button Station

PC:  Pull Chain, Piece, Precast Concrete

PCF: Pounds per cubic foot

PCPL: Portland Cement Plaster

PD:  Pump Discharge, Plaza Drain

PDP: Paneled Door, Painted

PE:  Porcelain Enamel, Professional Engineer

PED: Pedestal, Pedestrian

PERF: Perforate, Performance

PERIM: Perimeter

PERP: Perpendicular

PFN: Prefinished

PG:  Pressure Gauge

PH:  Phase, Preheat, Phone

PIV: Pivoted, Post Indicator Valve

PJF: Preformed Joint Filler

PKG: Parking

PKWY: Parkway

PL:  Plate, Plan, Property Line, Plastic Laminate, Plastic

PLAS: Plaster, Plastic

PLAS LAM: Plastic Laminate

PLBG: Plumbing

PLF: Pounds Per Lineal Foot

PLG: Plumbing

PLMBG: Plumbing

PLTF: Platform

PLWD: Plywood

PLYWD: Plywood

PLUMB: Plumbing

PNEU: Pneumatic

PNL: Panel

PNT: Paint

POL: Polish, Polished

PORC: Porcelain

PORT: Portable

POT W: Potable Water

PP:  Plaster, Painted, Power Panel, Precast Panel

PR:  Pair

PRC: Precast

PRCST: Precast

PRE: Prefinished

PREFAB: Prefabricated

PRES: Pressure

PRESS: Pressure

PRF: Preformed

PRFMD: Preformed

PRI: Primary

PRMLD: Premolded

PROT: Protection, Protective

PRSTR: Prestressed

PRTN: Partition

PRV: Pressure Reducing Valve

PS:  Plumbing Stack

PSC: Prestressed Concrete

PSF: Pounds per square foot

PSI: Pounds per square inch

PSIG: Pounds per square inch gage

PT:  Paint, Point, Part, Potential Transformer

PTC: Post-Tensioned Concrete

PTD: Painted, Paper Towel Dispenser

PTD/R: Combination Paper Towel Dispenser/Receptacle

PTN: Partition

PTR: Paper Towel Receptacle

PV: Paving

PVC: Polyvinyl Chloride

PVF: Polyvinylidene Finish

PVG: Paving

PVMT: Pavement

PVT: Private

PW: Pass Window

PWR: Power

QUAL: Quality

QUANT: Quantity

QT:  Quarry Tile, Quart

QTR: Quarter

QTY: Quantity

R:  Riser, Radius, Resistance, Relay Panel

R & S: Rod and Shelf

RA:  Return Air, Registered Architect

RAD: Radius, Radiator

RADN: Radian

RB:  Rubber, Rubber Base, Resilient Base

RBC: Rubber Base (Coved),

Rubberized Bituminous Compound

RBS: Rubber Base (Straight)

RBT: Rabbet

RCF: Raised Computer Floor

RCP: Reflected Ceiling Plan, Reinforced Concrete Pipe

RD:  Roof Drain, Round, Receptacle Distribution Panel

REBAR: Reinforcing Bar

REC: Receiver

RECEP: Receptacle

RECP: Receptacle

RED: Reducer

REF: Refer, Reference, Refrigerator

REFL: Reflected, Reflector

REFR: Refrigerate, Refrigerator

REG: Register, Regular

REINF: Reinforcement, or Reinforce

REM: Remove, Removable

REQ: Require, Required

REQD: Required

RES: Resilient

RESIL: Resilient

REST: Resistance

RET: Return, Retaining

RETG: Retaining

REV: Reverse, Revise, Revision

REV DR: Revolving Door

RF: Roof

RFG: Roofing

RGTR: Register

RGH: Rough

RGH OPNG:Rough Opening

RH:  Right Hand, Reheat, Relative Humidity

RHC: Reheat Coil

RHMS: Round Head Machine Screw

RHR: Right Hand Reverse, Reheater

RHWS: Round Head Wood Screw

RM: Room

RMS: Root Mean Squared

RMV: Remove

RN:  Riser Nipple

RO:  Rough Opening

ROB: Rod Out Basin

ROW: Right of Way

RPM: Revolutions Per Minute

RPT: Repeat (like “Ditto”)

RR:  Railroad

RT:  Rubber Tile, Right

RTR/RR Rubber Tread/Rubber Riser

RVS: Reverse Side

RVT: Rivet

RW: Redwood

RWC: Rain Water Conductor

RWD: Redwood

RWL: Rain Water Leader

S:  South, Sealant, Supply, Sink

S4S: Surfaced 4 Sides

S&M: Surfaced & Matched

S&S: Stained & Sealed

S&V: Stain & Varnish

SACT: Suspended Acoustical Tile

SALV: Salvage

SAN: Sanitary

SB: Setting Basin, Splash Block

SC:  Solid Core, Short Circuit, Self Closing, Sill Cock

SCD: Seat Cover Dispenser

SCFT: Structural Clay Facing Tile

SCH: Schedule

SCHED: Schedule

SCR: Screen

SCUP: Scupper

SCWD: Solid Core Wood

SD: Soap Dispenser

SE:  Structural Engineer

SEAL: Sealant

SEC: Second, Section, Secondary, Security System

SECT: Section

SECY: Secretary

SED: Sewage Ejector Discharge

SEL: Select

SERV: Service

SEV: Sewage Ejector Vent

SF:  Square Foot

SFGL: Safety Glass

SGG: Structural Glazing Gasket

SGS: Silicone Glazing Sealant

SH:  Shelf, Sheet, Shower

SHR: Shower

SHT: Sheet

SHTH: Sheathing

SHTHG: Sheathing

SHWR: Shower

SIG: Signal

SIM: Similar

SJS: Silicone Joint Sealant

SK:  Sink

SKL: Skylight

SL: Siamese Line

SLOT: Slotted

SLV: Sleeve

SND: Sanitary Napkin Dispenser

SNGG: Sponge Neoprene Glazing Gasket

SNR: Sanitary Napkin Receptacle

SNT: Sealant

SP:  Soil Pipe, Standpipe, Soundproof, Single Pole

SPC: Spacer

SPD: Sump Pump Discharge

SPDT: Single Pole Double Throw

SPEC: Specification, Specifications

SPECS: Specifications

SPK: Speaker

SPL: Special

SPLR: Sprinkler

SPM: Sprinkler Main

SPP: Skim Coat Plaster Painted

SPST: Single Pole Single Throw

SQ:  Square

SS:  Stainless Steel, Set Screw, Soil Stack, Service Sink, Slop Sink

SSD: Sub-soil Drain

SSGS: Silicone Structural Glazing Sealant

SSK: Service Sink

SSS: Silicone Sanitary Sealant

SST: Stainless Steel

ST:  Straight, Storm Water

STA: Station

STC: Sound Transmission Class

STD: Standard

STG: Storage, Seating

STGG: Structural Glazing Gasket

STGR: Stagger

STIFF: Stiffener

STK: Stack

STL: Steel

STM: Steam

STO: Storage

STOR: Storage

STP: Standard Temperature & Pressure, Standpipe

STR: Straight (re-bars), Strainer, Structural, Starter

STRL: Structural

STRT: Straight

STRUC: Structural

STRUCT:  Structural

ST W: Storm Water

STWY: Stairway

SUCT: Suction

SUPP: Supplementary, Supplement

SUPT: Superintendent

SUR: Surface

SUSP: Suspended, Suspend

SV:  Safety Relief Valve

SW: Switch

SWBD: Switchboard

SWGR: Switchgear

SY:  Square Yard

SYM: Symmetrical

SYN: Synthetic

SYS: System

T:  Tread, Thermostat, Tee

T/:  Top

T&B: Top and Bottom

T&G: Tongue & Groove

T&P: Temperature & Pressure Relief Valve

TAN: Tangent

TB:  Towel Bar

TC:  Top of Curb, Terracotta

TCLO: Telephone Closet

TCS: Terne Coated Stainless Steel

TD:  Trench Drain

TEL: Telephone

TEL CL: Telephone Closet

TEMP: Temporary, Tempered, Temperature

TEN: Tenant

TER: Terrazzo

TERR: Terrazzo

TERM: Terminal

TGL: Toggle

TH:  Thermostat

THK: Thick, Thickness

THKNS: Thickness

THR: Threshold

THRESH:  Threshold

THRM: Thermal

THRMST:  Thermostat

THRU: Through

TKBD: Tackboard

TL:  Twist Lock (receptacle)

TLT: Toilet

TOL: Tolerance

TP:  Top of Pavement

TPD: Toilet paper Dispenser

TPH: Toilet Paper Holder

TPTN: Toilet Partition

TR:  Tread, Transom

TRANS: Transformer, Translucent

TRAV: Travertine

TRD: Tread

TS:  Time Switch

TSL: Top of Slab

TST: Top of Steel

TSTAT: Thermostat

TT:  Terrazzo Tile, Traffic Topping

TTC: Telephone Terminal Closet

TV:  Television

TW: Top of Wall, Thin Wall (conduit), Tempered Water

TYP: Typical

TZ:  Terrazzo

UC:  Undercut

UH:  Unit Heater

UL:  Underwriters’ Laboratories

UNEX: Unexcavated

UNEXC: Unexcavated

UNF: Unfinished

UNFIN: Unfinished

UNO: Unless Noted Otherwise

UON: Unless Otherwise Noted

UP:  Unpainted

UR:  Urinal

USG: United States Gauge, United States Gypsum Company

USS: United States Standard

UT:  Utility

V:  Volt, Valve, Vinyl, Vent, Ventilator

VA:  Volt Ampere

VAC: Vacuum

VACBR: Vacuum Breaker

VAR: Varnish, Varies

VAT: Vinyl Asbestos Tile

VB:  Vapor Barrier, Valve Box, Vinyl Base, Vacuum Breaker

VBC: Vinyl Base (Coved)

VBS: Vinyl Base (Straight)

VC: Varnished Cambric

VCP: Vitrified Clay Pipe

VCT: Vinyl Composition Tile

VENT: Ventilate, Ventilator

VERT: Vertical

VEST: Vestibule

VF:  Vinyl Fabric

VFGT: Vinyl Foam Glazing Tape

VIF: Verify In the Field

VIN: Vinyl

VIT: Vitreous

VLT: Vault

VNR: Veneer

VOL: Volume

VP:  Vapor Proof, Vent Pipe

VR:  Vapor Retarder, Vacuum Return, Vertical Riser

VRM: Vermiculite

VS:  Vent Stack

VT:  Vinyl Tile

VTR: Vent Through Roof

VWC: Vinyl Wall Covering

W:  West, Width, Wide, Watt, Waste, Water, Water Main

W/:  With

W/O: Without

W&M: Washburn & Moen Gauge

WAINS: Wainscot

WB: Wood Base

WC: Watercloset

WD: Wood

WDP: Wood, Painted

WDSS: Wood, Stained & Sealed

WDW: Window

WF: Wide Flange (structural steel)

WFS: Water Flow Switch

WG: Wired Glass

WGL: Wire-Glass

WH: Water Heater, Wall Hung, Wall Hydrant

WI:  Wrought Iron

WIN: Window

WM: Wire Mesh, Water Meter

WP: Waterproof, Working Point, Working Pressure, Weatherproof

WPR: Waterproofing

WPT: Working Point

WR: Water Resistant, Water Repellant, Waste Receptacle

WRSTP: Weatherstripping

WS: Weatherstripping, Water Stop

WSCT: Wainscot

WT: Weight, Water Table, Watertight

WVNR: Wood Veneer

WW: Window Wall

WWF: Welded Wire Fabric

XH:  Extra Heavy

X HVY: Extra Heavy

X STR: Extra Strong

YD:  Yard

YR:  Year