机械英语缩略词简写大全_学霸学习网
机械英语缩略词简写大全
A: Area, A A A Compressed Air Line AB: Anchor B 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 T Actual AD: Access Door, Area Drain ADA: Americans with Disabilities Act of 1992 ADAAG: Americans with Disabilities Act Architectural Guidelines ADD: A 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, A 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: A Associate ASSY: Assembly ASTM: American Society for Testing and Materials AT: Acoustical T Asphalt Tile ATC: Acoustical Tile Ceiling ATTEN: Attenuation ATM: Automatic Teller M 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 F 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A abbreviation ABBR acoustic ACST acoustical tile ACT. or AT. adhesive ADD. or ADH adjustable ADJ adjustable-trip circuit breaker ATCB aggregate AGGR aileron AIL air conditioner A/C air handler A/H air tight AT alarm ALM alloy ALY alternating current AC aluminum Al ambient AMB Ambulatory Health Care Center AHCC American National Standards Institute ANSI American Wire Gauge AWG ammeter A or AM ampere A or AMP ampere interrupting rating AIR. amps A anchor bolt AB anode A antenna ANT. apartment APT appliance APPL approved APPD or APVD approximate APPROX approximately APPROX architectural ARCH. architecture ARCH. area A area drain AD armature A or ARM. asphalt ASPH asphalt tile AT. as required AR Assured Equipment Grounding Program AEGP astragal A Authority Having Jurisdiction AHJautomatic AU or AUTO automatic sprinkler AS auxiliary AUX avenue AVE azimuth AZB basement BSMT bathroom B bathtub BT battery (electric) BAT. beam BM bearing BRG bearing plate BPL or BRG PL bedroom BR benchmark BM black BK block BLK blocking BLKG blue BL board BD board foot BF bonding jumper BJ boulevard BLVD brake relay BR brass BRS brick BRK bridge BRDG bronze BRZ brown BR building BL or BLDG building line BL built-up roofing BUR bypass BYP C cabinet CAB. cable CA Cable Antenna Television CATV cantilever CANTIL capacitor CAP. cased opening CO casement CSMTcasing CSG cast iron CI cast-iron pipe CIP cast steel CS cast stone CS or CST catch basin CB cathode K ceiling CLG cellar CEL Celsius ° C cement CEM cement floor CF center CTR centerline CL center-to-center C to C centigrade C central processing unit CPU ceramic CER ceramic tile CT ceramic-tile floor CTF channel CHAN chapter CH chimney CHM circuit CIR or CKT circuit breaker CB circuit interrupter CI circular mils CM cleanout CO clockwise CW closet CLO coarse CRS coated CTD coaxial COAX Code-Making Panel CMP cold air CA cold water CW column COL compacted COMP concrete CONC concrete block CCB or CONC BLK concrete floor CCF concrete pipe CP condenser COND conductor resistivity Kconduit C or CND construction joint CJ continuous CONT contour CTR control CONT control joint CJ or CLJ control relay CR control relay master CRM copper Cu corner COR cornice COR corrugated CORR counterclockwise CCW counter electromotive force CEMF county CO cubic CU cubic foot CU FT cubic foot per minute CFM cubic foot per second CFS cubic inch CU IN. cubic yard CU YD current I current transformer CT cut out CO cycles per second CPS D damper DMPR dampproofing DP dead load DL decibel DB deck DK demolition DML depth DP detail DET or DTL diagonal DIAG diagram DIAG diameter D or DIA dimension DIM. dimmer DMR dining room DR diode DIO direct current DC disconnect switch DSdishwasher DW distribution DISTR distribution panel DPNL division DIV door DR dormer DRM double-acting DBL ACT double hung window DHW double-pole DP double-pole double-throw DPDT double-pole double-throw switch DPDT SW double-pole single-throw DPST double-pole single-throw switch DPST SW double-pole switch DP SW double strength glass DSG double-throw DT down D or DN downspout DS drain DR drain tile DT drawing DWG drinking fountain DF drum switch DS dryer D drywall DW duplex DX dust tight DT dutch door DD duty cycle DTY CY dynamic braking contactor or relay DB E each EA east E efficiency Eff ejector pump EP electric ELEC electrical ELEC electrical metallic tubing EMT electric panel EP electromechanical ELMCH electromotive force EMF electronic ELEK elevation ELelevator ELEV enamel ENAM entrance ENTR equipment EQPT equipment bonding jumper EBJ equipment grounding conductor EGC equivalent EQUIV estimate EST excavate EXC exception Ex. exhaust EXH existing EXIST. or EXST expanded metal EM expansion joint EXP JT explosionproof EP exterior EXT exterior grade EXT GR F face brick FB Fahrenheit ° F fast F field F figure FIG. fine print note FPN finish FNSH finish all over FAO finished floor FNSH FL finished grade FG or FIN GR finish one side F1S finish two sides F2S firebrick FBCK fire door FDR fire extinguisher FEXT fire hydrant FHY fireplace FP fireproof FPRF fire wall FW fixed window FX WDW fixture FXTR flammable FLMB flashing FL flat FL flexible metallic conduit FMCfloat switch FS floor FL floor drain FD flooring FLG or FLR floor line FL flow switch FLS fluorescent FLUOR or FLUR flush FL flush mount FLMT footing FTG foot per minute FPM foot per second FPS foot switch FTS forward F or FWD foundation FDN four-pole 4P four-pole double-throw switch 4PDT SW four-pole single-throw switch 4PST SW four-pole switch 4PSW frame FR frequency FREQ front view FV full-load amps FLA full-load current FLC full-load torque FLT furnace FUR. furring FUR. fuse FU fuse block FB fuse box FUBX fuse holder FUHLR fusible FSBL future FUT G gallon per hour GPH gallon per minute GPM galvanized GALV garage GAR gas G gate G gauge GA generator GEN glass GL or GLSglass block GLB glaze GLZ gold Au grade GR grade line GL gravel GVL gray GY green G or GR gross vehicle weight GVW ground G, GND, GRD, or GRND grounded (outlet) G ground-fault circuit interrupter GFCI ground fault protection of equipment GFPE grounding electrode conductor GEC grounding electrode system GES gypsum GYP gypsum sheathing board GSB H hand-off-auto HOA handrail HNDRL hardboard HBD hardware HDW hardwood HDWD hazardous HAZ header HDR heating HTG heating, air-conditioning, refrigeration HACR heating, ventilating, and air conditioning HVAC heavy-duty HD hertz Hz highway HWY hollow core HC hollow metal door HMD horizontal HOR horsepower HP hose bibb HB hot water HW hot water heater HWH hours HRS hydraulic HYDRI immersion detection circuit interrupter IDCI inch IN. inch per second IPS inch-pound IN. LB infrared IR inside diameter ID instantaneous overload IOL instantaneous-trip circuit breaker ITB insulation INSUL integrated circuit IC interior INT or INTR interlock INTLK intermediate INT intermediate metal conduit IMC International Electrotechnical Commission IEC interrupt INT inverse time breaker ITB inverse-time circuit breaker ITCB iron I iron pipe IP isolated ground IG J jamb JB or JMB joint JT joist J or JST junction JCT junction box JB K key way KWY kick plate KPL kiln-dried KD kilo (1000) k 1000 circular mils kcmil 1000?kFT kilovolt amps kVA kilowatt kW kilowatt-hour kWh kitchen K or KIT. knife switch KN SW knockout KOL lamp LT lath LTH laundry LAU laundry tray LT lavatory LAV left L left hand LH less-flammable, liquid-insulated LFLI library LBRY or LIB light LT lighting LTG lighting panel LP lights LTS limit switch LS line L linoleum LINO or LINOL lintel LNTL live load LL living room LR load L location LOC locked-rotor ampacity LRA locked-rotor current LRC louver LVR or LV lumber LBR M magnetic brake MB main MN main bonding jumper MBJ main control center MCC manhole MH manual MAN., MN, or MNL manufacturer MFR marble MRB masonry MSNRY masonry opening MO material MATL or MTL maximum MAX maximum working pressure MWP mechanical MECH medicine cabinet MC medium MEDmemory MEM metal MET or MTL metal anchor MA metal door METD metal flashing METF metal jalousie METJ metal lath and plaster MLP metal threshold MT mezzanine MEZZ miles per gallon MPG miles per hour MPH minimum MIN mirror MIR miscellaneous MISC molding MLDG monolithic ML mortar MOR motor M, MOT, or MTR motor branch-circuit, short-circuit, ground-fault MBCSCGF motor circuit switch MCS motor control center MCC motor starter M motor switch MS mounted MTD N nameplate NPL National Electrical Code? NEC? National Electrical Manufacturers Association NEMA National Electrical Safety Code NESC National Fire Protection Association NFPA negative NEG net weight NTWT neutral N or NEUT nominal NOM nonadjustable-trip circuit breaker NATCB non-time delay fuse NTDF normally closed NC normally open NO north N nosing NOS not to scale NTSnumber NO. O Occupational Safety and Health Administration OSHA ohmmeter OHM. on center OC opaque OPA opening OPNG open web joist OJ or OWJ orange O ounces per inch OZ/IN. outlet OUT. outside diameter OD overall OA overcurrent OC overcurrent protection device OCPD overhang OVHG overhead OH. overload OL overload relay OL P paint PNT painted PTD pair PR panel PNL pantry PAN. parallel PRL peak-to-peak P-P perpendicular PERP personal computer PC phase PH piece PC piling PLG pillar PLR pilot light PL piping PP pitch P plank PLK plaster PLAS plastic PLSTC plate PL plate glass PLGLplugging switch PLS plumbing PLMB or PLBG plywood PLYWD pneumatic PNEU point of beginning POB pole P polyvinyl chloride PVC porcelain PORC porch P positive POS pound(s) LB pounds per feet LB-FT pounds per inch LB-IN. pounds per square foot PSF pounds per square inch PSI power P or PWR power consumed P power factor PF precast PRCST prefabricated PFB or PREFAB prefinished PFN pressure switch PS primary switch PRI property line PL pull box PB pull switch PS pull-up torque PUT pushbutton PB Q quadrant QDRNT quantity QTY quarry tile QT quarry-tile roof QTR quart QT quick-acting QA R radius R raintight RT random RDM or RNDM range R or RNG receipt of comments ROC receipt of proposals ROPreceptacle RECEPT or RCPT recess REC recessed REC rectifier REC red R reference REF refrigerator REF register REG or RGTR reinforce RE reinforced concrete RC reinforcing steel RST reinforcing steel bar REBAR required REQD resistance R resistor R or RES return RTN reverse R or REV reverse-acting RACT revision REV revolutions per minute RPM revolutions per second RPS rheostat RH ribbed RIB right R right hand RH rigid RGD riser R road RD roll roofing RR roof RF roof drain RD roofing RFG room R or RM root mean square RMS rotor RTR rough RGH rough opening RO rough sawn RS S safety switch SSW sanitary SAN scale SC schedule SCH or SCHEDscreen SCR scuttle S secondary SEC section SECT selector switch SS series S service SERV service entrance SE service factor SF sewer SEW. shake SHK sheathing SHTHG sheet SH or SHT sheet metal SM shelf and rod SH & RD shelving SHELV shingle SHGL shower SH shutter SHTR siding SDG silicon controlled rectifier SCR sill cock SC silver Ag single-phase 1PH single-pole SP single-pole circuit breaker SPCB single-pole double-throw SPDT single-pole double-throw switch SPDT SW single-pole single-throw SPST single-pole single-throw switch SPST SW single-pole switch SP SW single strength glass SSG sink S or SK skylight SLT slate S, SL, or SLT sliding door SLD slope SLP slow S smoke detector SD socket SOC soffit SF soil pipe SP solenoid SOL solid core SCsouth S spare SP specification SPEC splash block SB square SQ square foot SQ FT square inch SQ IN. square yard SQ YD stack STK stainless steel SST stairs ST standard STD standpipe SP starter START or STR steel STL stone STN storage STOR street ST structural glass SG sump pump SP supply SPLY surface four sides S4S surface one side S1S switch S or SW switched disconnect SWD T telephone TEL television TV temperature TEMP tempered TEMP terazzo TER terminal T or TERM. terminal board TB terra cotta TC thermal THRM thermally protected TP thermostat THERMO thermostat switch THS three-phase 3PH three-pole 3P three-pole double-throw 3PDT three-pole single-throw 3PST three-way 3WAYthree-wire 3W threshold TH time T time delay TD time-delay fuse TDF time delay relay TR toilet T tongue-and-groove T & G torque T transformer T, TRANS, or XFMR transformer, primary side H transformer, secondary side X tread TR triple-pole double-throw 3PDT triple-pole double-throw switch 3PDT SW triple-pole single-throw 3PST triple-pole single-throw switch 3PST SW triple-pole switch 3P SW truss TR two-phase 2PH two-pole DP two-pole double-throw DPDT two-pole single-throw DPST typical TYP U unclamp UCL underground UGND underground feeder UF undervoltage UV Underwriters Laboratories Inc. UL unexcavated UNEXC unfinished UNFIN up U utility room U RM V valley VAL valve V vapor seal VS vaportight VT vent V ventilation VENT. vent pipe VPvent stack VS vertical V or VERT vinyl tile VTILE or VT violet V volt V voltage E or V voltage drop VD volt amps VA volts V volts alternating current VAC volts direct current VDC volume VOL W wainscot WAIN walk-in closet WIC warm air WA washing machine WM waste pipe WP waste stack WS water WTR water closet WC water heater WH water meter WM waterproof WP watt(s) W weatherproof WP welded WLD welded wire fabric WWF west W white W wide flange WF wire gauge WG wire mesh WM with W/ without W/O wood WD wrought iron WI Y yellow YABANDON ABAN ABOVE ABV ABOVE FINISHED FLOOR AFF ABOVE FINISHED GRADE AFG ABOVE FINISHED SLAB AFS ABOVE RAISED FLOOR ARF ABOVE SEA LEVEL ASL ABOVE SUSPENDED CEILING ASC ABRASIVE ABRSV ABSOLUTE ABS ABUTMENT ABUT ACCESS DOOR AD ACCESS FLOOR AF ACCESS PANEL AP ACCUMULATOR ACCUM ACETYLENE ACET ACID PROOF AP ACID VENT AV ACID WASTE AW ACID-RESISTANT ACID RES ACID-RESISTANT CAST IRON ACID RES CI ACID-RESISTANT PIPE ACID RES P ACID-RESISTANT VENT ACID RES V ACID-RESISTANT WASTE ACID RES W ACOUSTICAL ACOUS ACOUSTICAL INSULATION ACOUS INSUL ACOUSTICAL PANEL ACOUS PNL ACOUSTICAL PLASTER ACOUS PLAS ACOUSTICAL TILE ACOUS TILE ACOUSTICAL WALL TREATMENT ACWT ACRYLIC PLASTIC ACR PL ACRYLONITRILE BUTADIENE STYRENE ABS ACTUATOR ACTR ADAPTER ADPTR ADDENDUM ADDM ADDITIONAL ADDL ADHESIVE ADH ADJACENT ADJC ADJUSTABLE ADJ AFTER FILTER AF AGGREGATE AGGR AGGREGATE BASE COURSE ABC AHEAD AHD AIR BASEBOARD AIR BBAIR BLAST AB AIR BLAST CIRCUIT BREAKER ABCB AIR BLAST TRANSFORMER ABT AIR BREAK SWITCH ABSW AIR CHAMBER AIR CH AIR CIRCUIT BREAKER ACB AIR CONDITIONING AC AIR CONDITIONING UNIT ACU AIR COOLED CONDENSER ACL AIR COOLED CONDENSING UNIT ACCU AIR HANDLING UNIT AHU AIR HORSEPOWER AHP AIR SEPARATOR AS AIR SUPPLY UNIT ASU AIR TIGHT AT AIR VENT AV ALARM ALM ALARM ANNUNCIATOR PANEL AAP ALARM CHECK VALVE ACV ALTERATION ALTRN ALTERNATE ALT ALTERNATE NUMBER ALT NO ALTERNATING CURRENT AC ALUMINUM AL AMBIENT AMB AMERICAN WIRE GAGE AWG AMMETER AMM AMOUNT AMT AMPERE AMP AMPERE HOUR AMP HR AMPERE HOUR METER AHM AMPERE INTERRUPTING CAPACITY AMP IC AMPLIFIER AMPL AMPLITUDE MODULATION AM ANALOG ANLG ANCHOR AHR ANCHOR BOLT AB ANNUNCIATOR ANN ANODIZED ANOD ANTENNA ANT APARTMENT APT APPARATUS APPAR APPARATUS DEW POINT ADP APPENDIX APPXAQUASTAT AQST ARCHITECT (URAL) ARCH ARCHITECT/ENGINEER A/E AREA DRAIN AD ARMATURE SHUNT ARM SHT ASPHALT ASPH ASPHALTIC CONCRETE AC ASPHALTIC CONCRETE PAVING ACP ASPIRATOR ASPRTR ASSEMBLY ASSY ASSOCIATION ASSN ASYMMETRICAL ASYM ATMOSPHERE ATM ATMOSPHERIC VENT ATM V ATTACHMENT ATCH ATTEMPORATOR ATTEMP AUDIO FREQUENCY AF AUDIO VISUAL AV AUTOMATIC AIR DAMPER AAD AUTOMATIC AIR VENT AAV AUTOMATIC CHECK VALVE ACKV AUTOMATIC CONTROL PANEL ACP AUTOMATIC CONTROL SYSTEM ACS AUTOMATIC CONTROL VALVE ACNV AUTOMATIC DOOR CLOSER ADC AUTOMATIC DOOR SEAL ADS AUTOMATIC FREQUENCY CONTROL AFC AUTOMATIC SPRINKLER DRAIN ASD AUTOMATIC TRANSFER SWITCH ATS AUTOMATIC TRANSFORMER AUTO XFMR AUXILIARY POWER UNIT APU AUXILIARY SWITCH ASW AVENUE AVE AZIMUTH AZ BACK OF CURB BC BACK TO BACK B/B BACK WATER VALVE BWV BACKDRAFT DAMPER BDD BACKFLOW PREVENTER BFP BACKSIGHT BS BAFFLE BAF BALANCE BAL BALANCE FITTING BALFBALANCING DAMPER BAL DMPR BALANCING VALVE BAL V BALL BEARING BBRG BALL VALVE BV BALLAST BLST BALLED AND BURLAPPED B&B BAROMETER BARO BARREL BRL BASE BOARD RADIATION BBR BASE LINE BL BASE PLATE BP BASEBOARD BB BASEMENT BSMT BATHROOM B BATTERY BAT BEAM BM BEARING BRG BEARING PLATE BRG PL BED JOINT BJT BEDROOM BR BELL AND BELL B&B BELL AND FLANGE B& F BELL AND SPIGOT B&S BELL END BE BELOW BLW BELOW CEILING BLW CLG BELOW FINISH FLOOR BLW FFLR BENCH MARK BM BEND RADIUS BR BETWEEN BETW BEVEL BEV BITUMINOUS BITUM BLACK IRON BI BLACK STEEL PIPE BSP BLOCK BLK BLOCKING BLKG BLOWDOWN BLWDN BLOWER BLO BLOWOFF BO BOARD BD BOILER BLR BOILER FEED BOOSTER PUMP BFBP BOILER FEED PUMP BFP BOILER FEED WATER BFWBOIL HORSEPOWER BLR HP BOILING POINT BP BOLT CIRCLE BC BOOSTER BSTR BOTH FACES BF BOTH SIDES BS BOTH WAYS BW BOTTOM BOT BOTTOM FACE BF BOTTOM OF BACKSLOPE BBS BOTTOM OF FORESLOPE BFS BOULEVARD BLVD BRACING BRCG BRACKET BRKT BRAKE HORSEPOWER BHP BRASS BRS BREAKER BRKR BRICK BRK BRIDGING BRDG BRIDGING JOIST BRDG JST BRITISH THERMAL UNIT BTU BRITISH THERMAL UNIT(1000) MBTU BRITISH THERMAL UNITS PER HOUR BTUH BRONZE BRZ BUILDING BLDG BUILT-UP BU BUILT-UP ROOF BUR BULKHEAD BLKHD BULLETIN BOARD BB BURGLAR ALARM BA BUS DIFFERENTIAL CURRENT TRANSFORMER BDCT BUSHING BSHG BUSHING CURRENT TRANSFORMER BCT BUSHING POTENTIAL DEVICE BPD BUTTERFLY BTFL BUTTERFLY CHECK VALVE CV BUTTERFLY VALVE BFV CABINET CAB CABINET HEATER CAB H CABINET UNIT HEATER CUH CABLE TELEVISION CTV CADMIUM CADCALIBRATE CAL CANDLE POWER CP CAPACITY CAP CAPPED OUTLET CO CARBON DIOXIDE CO2 CARBON MONOXIDE CO CARPET CARP CASED OPENING CO CASEMENT CSMT CASEWORK CSWK CASING CSG CASING BEAD CSB CAST IRON CI CAST IRON MECHANICAL JOINT CIMJ CAST IRON PIPE CIP CAST IRON RADIATOR CIR CAST IRON SOIL PIPE CISP CAST STEEL CSTL CAST STONE CS CATALOG CAT CATCH BASIN CB CAVITY CAV CEILING CLG CEILING DIFFUSER CLG DIFF CEILING HEIGHT CLG HT CEILING REGISTER CLG REG CEMENT CEM CEMENT PLASTER CEM PLAS CENTER LINE CL CENTER TO CENTER C/C CENTRIFUGAL CNTFGL CERAMIC CER CERAMIC TILE CER TILE CHALKBOARD CH BD CHAMFER CHFR CHANNEL CHAN CHECK CHK CHECK VALVE CHKV CHEMICAL CHEM CHEMICAL FEED PUMP CFP CHILLED AND HEATING WATER RETURN CHHWR CHILLED AND HEATING WATER SUPPLY CHHWS CHILLED WATER CHW CHILLED WATER PRIMARY PUMP CHWPPCHILLED WATER PUMP CHWP CHILLED WATER RECIRCULATING PUMP CHWRP CHILLED WATER RETURN CHWR CHILLED WATER SECONDARY PUMP CHWSP CHILLED WATER SUPPLY CHWS CHILLER CH CHLORINATED POLYVINYL CHLORIDE CPVC CHROME PLATED CHR PL CIRCLE CIR CIRCUIT CKT CIRCUIT BREAKER CKT BRKR CIRCULAR CIRC CIRCULATING HOT WATER CHW CIRCULATING WATER PUMP CWP CIRCUMFERENCE CRCMF CLAMP CLMP CLASSROOM CLRM CLEANOUT CO CLEAR CLR CLOCKWISE CW CLOSED CIRCUIT TELEVISION CCTV CLOSET CLO CLOSING COIL CC CLOSURE CLS COAGULANT COAG COAXIAL CABLE COAX COEFFICIENT COEF COEFFICIENT OF PERFORMANCE COP COLD ROLLED STEEL CRS COLD WATER CW COLUMN COL COLUMN LINE CLL COMBINATION COMB COMBINATION TOWEL DISPENSER & RECEPTACLE CTD& R COMBUSTION CBSN COMMON COM COMMUNICATION COMM COMPARTMENT COMPT COMPLETE COMPL COMPOSITE CMPST COMPRESSIBLE CPRS COMPRESSOR CPRSR CONCENTRIC REDUCER CRCONCRETE CONC CONCRETE EQUIPMENT BASE CEB CONCRETE FLOOR CONC FL CONCRETE MASONRY UNIT CMU CONCRETE PIPE CP CONCRETE PIPE ARCH CPA CONCRETE SEWER PIPE CSP CONCRETE SPLASH BLOCK CSB CONDENSATE RETURN PUMP CRP CONDENSER WATER PUMP CWP CONDENSER WATER RETURN CWR CONDENSER WATER SUPPLY CWS CONDENSER (ATE) COND CONDUCTORS, NUMBER OF (3) 3/C CONDUIT CND CONFERENCE CONF CONNECTION CONN CONSTRUCTION CONSTR CONSTRUCTION JOINT CJ CONTINUOUS (ATION) CONT CONTRACT(OR) CONTR CONTRACT LIMIT LINE CLL CONTRACTOR FURNISHED EQUIP. CFE CONTROL JOINT CLJ CONTROL PANEL CP CONTROL RELAY CR CONTROL SWITCH CS CONTROL VALVE CV CONVECTOR CONV COOL WHITE CW COOL WHITE DELUXE CWX COOLING TOWER CT COOLING TOWER RETURN CTR COOLING TOWER SUPPLY CTS COORDINATE COORD CORNER CNR CORNER BEAD CB CORNER GUARD CD CORRECTION FACTOR CORR FAC CORRIDOR CORR CORRUGATED MENTAL PIPE CMP COUNTER CNTR COUNTER CLOCKWISE CCW COUNTER FLASHING CFLGCOUNTERBORE CBORE COUNTER SUNK CSK COUPLING CPLG COUPLING CAPACITOR POTENTIAL DEVICE CCPD COVER COV COVER PLATE COV PL CROSS ARM X ARM CROSS SECTION X SECT CROWN CRN CUBICLE CUB CURB AND GUTTER C&G CURRENT CUR CURRENT TRANSFORMER CABINET CTC CURRENT TRANSFORMER CT CYCLE CY CYLINDER CYL CYLINDER LOCK CYL L DAMPER DMPR DAMPPROOFING DMPF DATUM DAT DEAD LEAD DL DEAD SOFT ANNEALED DSA DEIONIZED WATER DIW DELUXE WHITE DW DEMAND METER DM DEMOLITION DEMO DEPARTMENT DEPT DETAIL DET DETECTOR DET DEW POINT DP DIAMETER BOLT CIRCLE DBC DIESEL FUEL DF DIFFERENCE DIFF DIFFUSER DIFF DIMENSION DIM DIMMER CONTROL PANEL DCP DINING ROOM DR DIRECT CONNECTION DIR CONN DIRECT CURRENT DC DIRECT EXPANSION DX DIRECT RADIATION DIR RADN DISHWASHER DWDISPENSER DISP DISTANCE DIST DISTILLED WATER DW DISTRIBUTE (ION) DISTR DISTRIBUTION PANEL DISTR PNL DITTO DO DIVIDER DIV DIVISION DIV DOMESTIC WATER CONDITIONER DWC DOMESTIC WATER HEATER DWH DOOR CLOSURE DCL DOOR FRAME DFR DOOR LOUVER DLV DOOR OPENING DOP DOOR STOP DST DOUBLE ACTING DBL ACT DOUBLE GLAZING DBL GLZ DOUBLE HUNG DH DOUBLE JOIST DJ DOUBLE POLE, DOUBLE THROW DPDT DOUBLE POLE, SINGLE THROW DPST DOVETAIL DVTL DOWEL DWL DOWN DN DOWNSPOUT DS DRAIN DR DRAIN TILE DT DRAIN VALVE DV DRAIN WASTE & VENT DWV DRAINAGE AREA DA DRAWER DWR DRAWING DWG DRINKING FOUNTAIN DF DRINKING WATER RETURN DWR DRINKING WATER SUPPLY DWS DRIVE DR DROP MANHOLE DMH DRY BULB DB DRY STANDPIPE DSP DRY WELL DRW DUCT ACCESS PANEL DAP DUCT COVERING INSULATION DCI DUCT LINER INSULATION DLI DUCTILE IRON PIPE DIPDUMBWAITER DWTR DUPLEX DX DUPLICATE DUPL DUST TIGHT DT EACH FACE EF EACH WAY EW EASEMENT ESMT EASEMENT LINE EL EAST E ECCENTRIC REDUCER ECC RDCR ECCENTRIC ECC ECONOMIZER ECON EDGE OF PAVEMENT EP EDGE OF SHOULDER ES EFFECTIVE TEMPERATURE ET EFFLUENT EFL ELASTOMERIC ELAST ELBOW ELB ELECTRICAL ELEC ELECTRICAL CABINET ECAB ELECTRICAL HAND DRYER EHD ELECTRICAL HEATING PANEL EHP ELECTRICAL METALIC TUBING EMT ELECTRICAL OUTLET EO ELECTRICAL PANEL EP ELECTRICAL WATER COOLER EWC ELECTRICAL WATER HEATER EWH ELECTRO-HYDRAULIC CONTROL EHC ELECTROMOTIVE FORCE EMF ELEVATION EL ELEVATOR ELEV EMERGENCY EMER EMERGENCY SHOWER EMER SHR EMERGENCY SWITCH PANEL ESP ENAMEL ENAM ENCLOSURE ENCL ENERGY ENGY ENGINE ENG ENGINEER ENGR ENTERING AIR TEMPERATURE EAT ENTERING DRY BULB TEMPERATURE EDBT ENTERING WATER TEMPERATURE EWT ENTERING WET BULB TEMPERATURE EWBTENTRANCE ENTR EQUALLY SPACED EQL SP EQUIPMENT EQUIP EQUIPMENT DRAIN EDR EQUIVALENT EQUIV EQUIVALENT DIRECT RADIATION EDR ERECTION ERECT ESCALATOR ESCAL ESTIMATE EST ETHYLENE PROPYLENE DIENE MONOMER EPDM EVAPORATE EVAP EVAPORATIVE COOLING UNIT ECU EXCAVATE EXC EXCHANGER EXCH EXCITER EXCTR EXHAUST EXH EXHAUST AIR EXH A EXHAUST DUCT EXH DT EXHAUST FAN EXH FN EXHAUST GRILLE EXH GR EXHAUST HOOD EXH HD EXHAUST REGISTER EXH RG EXISTING EXST EXISTING GRADE EXST GR EXPANSION EXP EXPANSION BOLT EXP BT EXPANSION JOINT EXP JT EXPANSION TANK EXP TK EXPLOSION PROOF EPRF EXTENSION EXTN EXTERIOR EXT EXTRUSION EXTR FABRIC WALL COVERING FWC FACE OF CONCRETE FOC FACE OF FINISH FOF FACE OF MASONRY FOM FACE OF STUDS FOS FACE TO FACE F/F FACTOR FAC FACTORY WIRED PANEL FWP FAN COIL UNIT FCU FAR FACE FFFAR SIDE FS FASTENER FSTNR FEEDER FDR FEEDWATER FDW FEETBOARD MEASURE FBM FEET PER MINUTE FPM FEET PER SECOND FPS FEMALE FEM FEMALE PIPE THREAD FPT FENCE FN FIBERBOARD FBD FIBERGLASS FGL FILTER FLTR FINISH FIN FINISH FLOOR FIN FL FINISH GRADE FIN GR FINNED TUBE CONVECTOR FTC FINNED TUBE RADIATION FTR FIRE ALARM FA FIRE ALARM CONTROL PANEL FACP FIRE BLANKET FB FIRE BRICK F BRK FIRE DAMPER FDMPR FIRE DEPARTMENT CONNECTION FDC FIRE DEPARTMENT CONNECTION CABINET FDCC FIRE DEPARTMENT VALVE FDV FIRE EXTINGUISHER FEXT FIRE EXTINGUISHER CABINET FEC FIRE HOSE CABINET FHC FIRE HOSE RACK FHR FIRE HYDRANT FHY FIRE PROTECTION WATER SUPPLY FPW FIRE RATING FR FIRE SPRINKLER HEAD FSH FIRE STANDPIPE FSP FIRE WATER PUMP FWP FIREPLACE FPL FIREPROOFING FPRF FITTING FTG FIXTURE FXTR FLANGE FLG FLARED FLRD FLARED TUBE FITTING FTFFLASHING FL FLAT BAR FB FLAT BOTTOM DITCH FBD FLAT HEAD MACHINE SCREW FHMS FLAT HEAD WOOD SCREW FHWS FLEXIBLE CONNECTION FLEX C FLOAT AND THERMOSTATIC TRAP F&TT FLOAT GLASS FLT GL FLOCCULATOR FLOC FLOOR (ING) FLR FLOOR CLEANOUT FCO FLOOR DRAIN FD FLOOR FINISH FLR FIN FLOOR PLATE FLR PL FLOOR REGISTER FLR REG FLOOR SINK FLR SK FLOW LINE FLL FLOW MEASURING DEVICE FMD FLOW SENSING SWITCH FSS FLOW SWITCH FLSW FLUID FLD FLUORESCENT FLUOR FLUSHING RIM SINK FR SNK FOLDING FLDG FOOT VALVE FV FOOTCANDLE FC FOOTING FTG FOOTLAMBERT FL FORMBOARD FMBD FOUNDATION FDN FRAME FR FRAMED MIRROR FR MIR FRAMED MIRROR AND SHELF FR MIR/SHF FREEZESTAT FSTAT FREEZING POINT FP FREQUENCY FREQ FREQUENCY MODULATION FM FRICTION FACTOR FRIC FAC FROG FG FROM FLOOR ABOVE FFA FROM FLOOR BELOW FFB FRONT FRT FUEL OIL FO FUEL OIL RETURN FORFUEL OIL SUPPLY FOS FUEL OIL VENT FOV FULL HEIGHT PARTITION FHP FULL LOAD AMPS FLA FULL SIZE FS FULL VOLTAGE NON-REVERSING FVNR FURNACE FUR FURNITURE FURN FURRING FURR FUSE FU FUSED SWITCH FU SW FUTURE FUT GAGE GA GALLON GAL GALLONS PER DAY GPD GALLONS PER HOUR GPH GALLONS PER MINUTE GPM GALLONS PER SECOND GPS GALVANIZED GALV GALVANIZED IRON GALVI GALVANIZED IRON PIPE GIP GALVANIZED STEEL GALVS GAS G GAS (OLINE) VENT GV GAS PRESSURE REGULATOR GPR GAS VENT THROUGH ROOF GVTR GAS WATER HEATER GWH GASKET GSKT GASOLINE, NON-LEADED NLG GASOLINE, PREMIUM PG GASOLINE, REGULAR RG GATE VALVE GTV GENERAL GENL GENERAL CONTRACT GENL CONTR GENERATOR GEN GLASS GL GLASS BLOCK GL BLK GLAZED CONCRETE MASONRY UNIT GLZ CMU GLAZING GLZ GLOBE VALVE GLV GLUE LAMINATED GLU LAM GOOD FOUR SIDES G4S GOOD ONE SIDE G1SGOOD THREE SIDES G3S GOOD TWO SIDES G2S GOOSENECK GSNK GOVERNMENT GOVT GRAB BAR GB GRAD (E) (ING) GR GRADE BEAM GR BM GRADE CLEANOUT GCO GRADE LINE GR LN GRAND MASTER KEYED GMKD GRATING GRTG GRAVEL GVL GRAVITY (CONSTANT) G GRAVITY ROOF VENTILATOR GRV GRAVITY VENT GV GREASE TRAP GT GRILLE GRL GROUND GND GROUND FAULT INTERRUPTER GFI GROUT GT GUARD RAIL GDR GUTTER GUT GUTTER DRAIN GD GYPSUM GYP GYPSUM BOARD GYP BD GYPSUM PLASTER GYP PLAS HAND DRYER HD HAND RAIL HNDRL HAND-OFF-AUTO HOA HANDHOLE HH HANDWHEEL HNDWL HANGER HGR HARDBOARD HDBD HARDWARE HDWE HARDWOOD HDWD HEAD HD HEAD JOINT HD JT HEADER HDR HEADWALL HDWL HEAT HT HEAT ABSORBING GLASS HAGL HEAT EXCHANGER HEX HEAT GAIN HGHEAT RECOVERY UNIT HRU HEAT TRANSFER COEFFICIENT U HEATER HTR HEATING HTG HEATING COIL HC HEATING WATER RETURN HTWR HEATING WATER SUPPLY HTWS HEATING, VENTILATION, AIR CONDITIONING HVAC HEAVY HVY HEAVY DUTY HD HEIGHT HGT HERTZ HZ HEXAGONAL HEX HIGH H HIGH FREQUENCY HF HIGH INTENSITY DISCHARGE HID HIGH OUTPUT HO HIGH POINT HPT HIGH POWER FACTOR HPF HIGH PRESSURE HP HIGH PRESSURE BOILER HPB HIGH PRESSURE DRIP TRAP HPDT HIGH PRESSURE GAS HPG HIGH PRESSURE LAMINATE H PLAM HIGH PRESSURE RETURN HPR HIGH PRESSURE STEAM HPS HIGH PRESSURE TRAP HPT HIGH STRENGTH HS HIGH STRENGTH BOLT HSB HIGH VELOCITY DIFFUSER HVD HIGH VELOCITY TERMINAL HVT HIGHWAY HWY HOLD-OPEN HO HOLLOW CONCRETE MASONRY UNIT HCMU HOLLOW CORE HC HOLLOW METAL HM HOLLOW METAL DOOR HMD HOLLOW METAL FRAME HMF HORIZONTAL HORIZ HORSEPOWER HP HOSE BIBB HB HOSE CABINET HC HOSE GATE VALVE HGVHOSE VALVE HV HOT AND COLD WATER H&CW HOT WATER HW HOT WATER BOILER HWB HOT WATER CIRCULATION PUMP HWCP HOT WATER COIL HWC HOT WATER HEATER HWH HOT WATER PUMP HWP HOT WATER RETURN HWR HOT WATER SUPPLY HWS HOT WATER TANK HWT HOT WATER, CIRCULATING HWC HOUR HR HUMIDSTAT HSTAT HYDRANT HYD HYDRAULIC HYDR IDENTIFICATION ID IGNITION IGN ILLUMINATION ILLUM INCANDESCENT INCAND INCHES (WATER COLUMN) IN WC INCINERATOR INCIN INDICATED HORSEPOWER IHP INDICATOR IND INDIRECT WASTE IW INDUSTRIAL INDL INFLUENT INF INLET INL INLET MANHOLE IMH INSIDE DIAMETER ID INSIDE FACE IF INSIDE PIPE SIZE IPS INSTALLATION INSTL INSTANTANEOUS WATER HEATER IHWH INSTRUMENT INSTR INSULATED PANEL INSUL PNL INSULATION INSUL INTAKE FAN IF INTERCOMMUNICATION INTERCOM INTERIOR INTR INTERIOR TELEPHONE CABINET ITC INTERIOR TELEPHONE TERMINAL BOARD ITTB INTERLOCK INTLKINTERNATIONAL PIPE STANDARD IPS INTERRUPTING CAPACITY IC INVERT INV INVERT ELEVATION INV EL IRON PIPE IP IRON PIPE SIZE IPS IRON PIPE THREAD IPT IRRIGATION WATER IW ISOMETRIC ISO JANITOR JAN JANITOR'S CLOSET JC JOINT JT JOIST JST JOULE J JUNCTION JCT JUNCTION BOX JB JUNIOR JR KEENE'S CEMENT PLASTER KCP KELVIN K KEYWAY KWY KICK PLATE KPL KILN DRIED KD KILOVAR (REACTANCE) KVAR KILOVOLT KV KILOVOLT AMPERE KVA KILOWATT KW KILOWATT HOUR KWH KIP (1000 LB) K KIPS PER LINEAR FOOT KLF KIPS PER SQUARE FOOT KSF KIPS PER SQUARE INCH KSI KITCHEN KIT KNEE BRACE KB KNOCK DOWN KD KNOCKOUT KO KNOCKOUT PANEL KOP LABEL LBL LABORATORY LAB LADDER LAD LAMINATION LAM LANDING LDGLARGE LRG LATENT HEAT LH LATENT HEAT GAIN LHG LATENT HEAT RATIO LHR LATERAL LATL LAUNDRY LAU LAVATORY LAV LAWN SPRINKLING LS LEADER LDR LEAST MEAN TEMP DIFFERENCE LMTD LEAST TEMP DIFFERENCE LTD LEAVING AIR LA LEAVING AIR TEMPERATURE LAT LEAVING DRY BULB TEMPERATURE LDBT LEAVING WATER TEMPERATURE LWT LEAVING WET BULB TEMPERATURE LWBT LEFT L LEFT HAND LH LEFT HAND REVERSE LHR LENGTH LG LEVEL (ER) LVL LEVER LVR LIBRARY LIB LIFT CHECK VALVE LCV LIGHT LT LIGHT POLE LP LIGHTING LTG LIGHTING PANEL LTG PNL LIGHTPROOF LP LIGHTWEIGHT LT WT LIGHTWEIGHT CONCRETE LWC LIGHTWEIGHT CONCRETE MASONRY UNIT LCMU LIGHTWEIGHT PLASTER LW PLAS LIMIT SWITCH LIM SW LINE-BUS L-B LINE-GROUND L-G LINEAR LIN LINEAR CEILING DIFFUSER LCD LINEAR DIFFUSER LD LINEAR FOOT LF LINTEL LNTL LIQUEFIED PETROLEUM LP LIQUID LIQLIQUIFIED PETROLEUM GAS LPG LIVE LOAD LL LIVING ROOM LR LOAD BEARING LD BRG LOCATION LOC LOCKED ROTOR LKROT LOCKED ROTOR AMPS LRA LOCKER LKR LOCKER ROOM LKR RM LONG LEG HORIZONTAL LLH LONG LEG VERTICAL LLV LONGITUDINAL LONG LOUDSPEAKER LS LOUVER LVR LOUVERED ROOF VENT LRV LOW POINT LPT LOW PRESSURE LP LOW PRESSURE ALARM SWITCH LPAS LOW PRESSURE BOILER LPB LOW PRESSURE CONDENSATE RETURN LPCR LOW PRESSURE DRIP TRAP SET LPDT LOW PRESSURE RETURN LPR LOW PRESSURE STEAM LPS LOW VOLTAGE LV LOW WATER CUT OFF LWCO LUBRICATE LUB LUBRICATED PLUG VALVE LPV LUBRICATING OIL LO LUBRICATING OIL VENT LOV LUMBER LBR LUMENTS PER WATT LPW LUMP SUM LS MACHINE MACH MACHINE ROOM MACH RM MAGNETIC STARTER MAG ST MAINTENANCE MAINT MAKE-UP AIR UNIT MAU MALE PIPE THREAD MPT MALLEABLE IRON MI MANHOLE MH MANUAL MAN MANUAL DAMPER MDMANUAL TRANSFER SWITCH MTS MANUAL VOLUME DAMPER MVD MANUFACTURING MFG MARBLE MARB MARK MK MARKER MKR MASONRY MAS MASONRY OPENING MO MASTER ANTENNA TELEVISION SYSTEM MATV MASTER BEDROOM MBR MATERIAL MATL MAXIMUM MAX MAXIMUM WORKING PRESSURE MWP MEAN EFFECTIVE TEMPERATURE MET MEAN HIGH TIDE MHT MEAN LOW TIDE MLT MEAN TEMPERATURE DIFFERENCE MTD MECHANICAL MECH MECHANICAL JOINT MJ MEDICINE CABINET MC MEDIUM MED MEDIUM DENSITY OVERLAID MDO MEDIUM PRESSURE MP MEDIUM PRESSURE RETURN MPR MEDIUM PRESSURE STEAM MPS MEETING MTG MEGAVOLT MV MEGAVOLT-AMPERES MVA MEGAWATT MW MEMBER MBR MEMBRANE MEMB MERCURY HG METAL MET METAL BASE METB METAL LATH ML METER M MEZZANINE MEZZ MID-ORDINATE MO MILE MI MILES PER HOUR MPH MILLIAMPERE MA MILLION GALLONS PER DAY MGD MILLWORK MLWK MINIMUM MINMINUTE MIN MIRROR MIR MISCELLANEOUS MISC MIXED AIR MA MIXED AIR TEMPERATURE MAT MIXING BOX MB MOBILIZATION MOBIL MODULE (AR) MOD MOLDING MLDG MOMENT CONNECTION MC MOMENTARY CONTACT MC MONITOR MON MONUMENT MON MOP SERVICE BASIN MSB MOP/BROOM HOLDER MBH MORTAR MTR MOTOR MOT MOTOR CONTROL CENTER MCC MOTOR GENERATOR MG MOTOR OPERATED DAMPER MOD MOTOR OPERATED VALVE MOV MOTOR STARTER MS MOTOR STARTER PANEL MSP MOTOR STARTER SWITCH MSS MOUNTED MTD MOUNTING MTG MOVABLE MVBL MULLION MULL MULTI-ZONE MZ MULTIPLE MULT NAMEPLATE NPL NATIONAL COARSE (THREAD) NC NATIONAL FINE (THREAD) NF NATIONAL PIPE THREAD NPF NATIONAL TAPER PIPE (THREAD) NPT NATURAL NAT NEAR FACE NF NEAR SIDE NS NEGATIVE NEG NEUTRAL NEUT NICKEL NKL NIPPLE NIP NITROGEN N NO PAINT NPNO VOLTAGE RELEASE NVR NOISE CRITERIA NC NOISE REDUCTION NR NOISE REDUCTION COEFFICIENT NRC NOMINAL NOM NON REINFORCED CONCRETE PIPE NRCP NON-RISING STEM NRS NONFUSED NFSD NORMALLY CLOSED NC NORMALLY OPEN NO NORTH N NOT APPLICABLE NA NOT IN CONTRACT NIC NOT TO SCALE NTS NOZZLE NOZ NUMBER NO OBSCURE OBS OFFICE OFF OIL CIRCUIT BREAKER OCB OIL CIRCUIT RECLOSURE OCR ON CENTER OC ONE THOUSAND FOOT POUNDS KIP FT ONE THOUSAND GALLONS PER HOUR MGPH OPENING OPNG OPPOSITE OPP OPTIONAL OPT ORIFICE ORF ORIGINAL ORIG OUNCE OZ OUT TO OUT O/O OUTLET VELOCITY OV OUTSIDE AIR OA OUTSIDE AIR DAMPER OAD OUTSIDE DIAMETER OD OUTSIDE DIMENSION OD OUTSIDE FACE OF OVER CURRENT OVC OVERALL OA OVERFLOW OVFL OVERFLOW ROOF DRAIN ORD OVERHEAD OVHD OVERHEAD GUY WIRE OHGW OWNER FURNISHED-CONTRACTORINSTALLED OFCI OWNER FURNISHED-OWNER INSTALLED OFOI OXYGEN OXY PACKAGE PKG PAINT PNT PAINTED PTD PAIR PR PANEL PNL PANIC BAR PB PAPER CUP DISPENSER PCD PAPER TOWEL DISPENSER PTD PAPER TOWEL RECEPTACLE PTR PARALLEL PAR PARGING PARG PARKING PARKG PARKWAY PKWY PARTICLEBOARD PBD PARTITION PTN PARTS PER MILLION PPM PATENT PAT PAVED PV PAVEMENT PVMT PAVING PVG PEDESTAL PED PEGBOARD PGBD PERFORATED PERF PERIMETER PERIM PERMANENT PERM PERPENDICULAR PERP PETCOCK PC PHASE PH PHILLIP'S HEAD SCREW PHS PHOTOGRAPH PHOTO PIECE PC PIPE ANCHOR PA PIPE GUIDE PG PIPE TAP PT PLASTER PLAS PLASTIC LAMINATE PLAM PLATE PL PLATFORM PLAT PLUG COCK PC PLUGGED TEE PTPLUMBING PLBG PLYWOOD PLYWD PNEUMATIC PNEU POINT OF COMPOUND CURVE PCC POINT OF CURVE PC POINT OF FROG PF POINT OF INTERSECTION PI POINT OF INTERSECTION FOR VERTICAL CURVE PIVC POINT OF REVERSE CURVE PRC POINT OF REVERSE CURVE VERTICAL CURVE PRCVC POINT OF SPIRAL TANGENT PST POINT OF SWITCH PS POINT OF TANGENCY PVT POINT OF VERTICAL CURVE PVC POINT OF VERTICAL INTERSECTION PVI POINT OF VERTICAL TANGENCY PVT POLE P POLISHED POL POLYETHYLENE PE POLYVINYL CHLORIDE PVC POLYVINYLIDINE FLUORIDE PVF PORTABLE PORT PORTLAND CEMENT PC PORTLAND CEMENT PLASTER PCP POSITIVE POS POST INDICATOR VALVE PIV POUND LB POUNDS PER CUBIC FOOT PCF POUNDS PER LINEAR FOOT PLF POUNDS PER SQUARE FOOT PSF POUNDS PER SQUARE INCH PSI POUNDS PER SQUARE INCH ABSOLUTE PSIA POUNDS PER SQUARE INCH GAGE PSIG POWER PWR POWER FACTOR PF POWER PANEL PP POWER ROOF EXHAUSTER PRE POWER ROOF VENTILATOR PRV POWER WALL EXHAUSTER PWE PRECAST PRCST PREFABRICATED PREFAB PREFINISHED PREFINPRELIMINARY PRELIM PREPARATION PREP PRESSURE GAGE PG PRESSURE REDUCING VALVE PRV PRESSURE RELIEF VALVE PRV PRESSURE SWITCH PRESS SW PRESSURE TEMPERATURE RELIEF value PTRV PRESTRESSED CONCRETE PS CONC PRIMARY PRI PROJECT PROJ PROPERTY PROP PROPERTY LINE PL PUBLIC ADDRESS PA PULL BOX PB PULL CHAIN PC PUMP P PUMP DISCHARGE LINE PD PUMPED RETURN PR PURSE SHELF PSH PUSHBUTTON PB QUALITY QUAL QUANTITY QTY QUARRY TILE QT QUARTER QTR QUICK COUPLER VALVE QCV RADIATION RADN RADIO FREQUENCY RF RADIUS RAD RAILING RLG RAILROAD RR RAIN WATER CONDUCTOR RWC RAIN WATER LEADER RWL RAISED FACE RF RAPID START RS REACTIVE KILOVOLT AMPERES RKVA RECEIVED RECD RECEIVER RCVR RECEPTACLE RECPT RECESSED REC RECESSED HOSE BIBB RHB RECIRCULATE RECIRC RECTANGULAR RECTREDUCER RDC REFERENCE REF REFLECTOR REFL REFRIGERANT RFGT REFRIGERANT DISCHARGE RD REFRIGERANT HOT GAS RHG REFRIGERANT LIQUID RL REFRIGERANT LIQUID LINE RLL REFRIGERANT SUCTION RS REFRIGERANT SUCTION LINE RSL REFRIGERATION REFR REGISTER REG REGULATOR RGLTR REHEAT COIL RHC REINFORCE (D) (ING) (MENT) REINF REINFORCED CONCRETE RC REINFORCED CONCRETE BOX RCB REINFORCED CONCRETE PIPE RCP RELATIVE HUMIDITY RH RELIEF RLF RELIEF VALVE RV REMOTE CONTROL RC REMOVABLE REM REPRODUCE REPRO REQUIRED REQD RESILIENT RESIL RETURN RET RETURN AIR RA RETURN AIR FAN RA FAN RETURN AIR GRILLE RA GR REVERSE RVS REVOLUTIONS PER MINUTE RPM REVOLUTIONS PER SECOND RPS RIGHT HAND RH RIGHT HAND REVERSE RHR RIGHT OF WAY ROW RISER R RIVETED RVT ROAD RD ROOF DRAIN RD ROOF VENT RV ROOF VENTILATOR RV ROOTING RFG ROOM RMROUGH OPENING RO ROUND RND ROUND HEAD MACHINE SCREW RHMS ROUND HEAD WOOD SCREW RHWS RUBBER RBR RUNWAY RWY SADDLE SDL SAFE WORKING PRESSURE SWP SAFETY FACTOR SF SAFETY VALVE SV SALVAGE SALV SANITARY SAN SANITARY NAPKIN DISPENSER SND SANITARY NAPKIN RECEPTACLE SNR SANITARY SEWER SS SANITARY VENT V SATURATION SAT SCHEDULE SCHED SCORED JOINT SJ SCREEN SCRN SEAMLESS SMLS SECOND SEC SECTION SECT SEGMENT SEG SENSIBLE HEAT SH SENSIBLE HEAT GAIN SHG SENSIBLE HEAT RATIO SHR SERVICE SVCE SERVICE RECEPTOR SR SERVICE SINK SSK SEWER SWR SHEATHING SHTHG SHEET (ING) SHT SHEET METAL SM SHELVES (ING) SHV SHOCK ABSORBER SA SHOULDER SHLDR SHOWER SHR SIDEWALK SW SIDEWATER DEPTH SWD SIGNAL SIG SIMILAR SIM SINGLE SGLSINGLE POLE SP SINGLE POLE, DOUBLE THROW SPDT SINGLE POLE, SINGLE THROW SPST SINK SK SLEEVE SLV SLIDE (ING) SL SLIP JOINT SJ SLOPE SLP SMOKE DAMPER SDMPR SMOOTH SM SOAP DISPENSER SD SOIL PIPE SP SOLENOID VALVE SOLV SOLID CONCRETE MASONRY UNIT SCMU SOLID CORE SC SOOT BLOWER SB SOUND TRANSMISSION CLASS STC SOUTH S SPACE (ING) SP SPEAKER SPKR SPECIAL SPCL SPECIFIC SP SPECIFIC GRAVITY SP GR SPECIFIC HEAT SP HT SPECIFIC VOLUME SP VOL SPECIFICATION SPEC SPLASH BLOCK SB SPLIT TEE SPT SPLITTER DAMPER SPD SPRINKLER SPKLR SQUARE SQ SQUARE FOOT SQ FT SQUARE INCH SQ IN SQUARE KILOMETER SQ KM SQUARE METER SQ M SQUARE MILLIMETER SQ MM SQUARE YARD SQ YD STAGGERED STAG STAINLESS STEEL SST STAKE STK STANDARD STD STANDPIPE SP STATIC PRESSURE ST PR STATION STASTEAM STM STEAM GAGE SG STEAM MANHOLE SMH STEAM RETURN SR STEAM SUPPLY SS STEAM WORKING PRESSURE STWP STEEL STL STEEL JOIST STL JST STEEL PLATE STL PL STIFFENER STIF STIRRUP STIR STORAGE STOR STORM DRAIN SD STORM DRAIN MANHOLE SDMH STRAIGHT STR STRAINER STN STREET ST STRUCTURAL STRUCT STRUCTURAL CLAY TILE SCT STRUCTURAL FACING TILE SFT STRUCTURAL STEEL STRUCT STL SUB-SOIL DRAIN SSD SUCTION SUCT SUPPLEMENT SUPPL SUPPLY SPLY SUPPLY AIR SA SUPPLY AIR GRILLE SAG SUPPLY DIFFUSER SD SUPPLY FAN SF SUPPORT SPRT SURFACE SURF SURVEY SURV SUSPENDED SUSP SUSPENDED CEILING SUSP CLG SUSPENDED UNIT HEATER SUH SWAGE SWG SWITCHBOARD SWBD SWITCHGEAR SWGR SYMBOL SYM SYMMETRICAL SYMM SYNTHETIC SYNTH SYSTEM SYSTACHOMETER TACH TACKBOARD TK BD TANGENT TAN TECHNICAL TECH TEE T TELEPHONE TEL TELEPHONE TERMINAL BOARD TTB TELEVISION TV TEMPERATURE TEMP TEMPERATURE CONTROL PANEL TCP TEMPERATURE CONTROL VALVE TCV TEMPERATURE CONTROLLED AIR COMPRESSOR TCAC TEMPERATURE DIFFERENTIAL TD TEMPERATURE ENTERING TE TEMPERATURE LEAVING TL TEMPERED TMPD TEMPERED GLASS TMPD GL TEMPORARY TEMP TEMPORARY BENCH MARK TBM TENSILE STRENGTH TS TERMINAL TERM TERMINAL UNIT TU TERRAZZO TER TEST BORING-xx(e.g. TB-1) TBxx THERMAL THERM THERMAL OVERLOAD TOL THERMAL RESISTANCE R THERMOCOUPLE TC THERMOSTAT T THERMOSTATIC MIXING VALVE TMV THERMOSTATIC TRAP TT THICKNESS THK THOUSAND BOARD FEET MBF THOUSAND BTU PER HOUR MBH THOUSAND CIRCULAR MILS MCM THOUSAND CUBIC FEET MCF THOUSAND CUBIC FEET PER MINUTE MCFM THREAD (ED) THD THREADED BOTH ENDS TBE THREADED ONE END TOE THRESHOLD THRES THROUGH THRU TO FLOOR ABOVE TFATO FLOOR BELOW TFB TOILET PAPER HOLDER TPH TOLERANCE TOL TONGUE AND GROOVE T&G TOP AND BOTTOM T& B TOP ELEVATION TE TOP OF BEAM TB TOP OF CONCRETE TC TOP OF CURB TC TOP OF FINISH FLOOR TFF TOP OF FOOTING TF OP OF JOIST TJ TOP OF PAVEMENT TP TOP OF RIM TR TOP OF SLAB TSL TOP OF STEEL TST TOP OF WALL TW TOTAL TOT TOTAL DYNAMIC HEAD TDH TOTAL PRESSURE TP TOTALLY ENCLOSED TE TOWEL BAR TB TOWEL DISPENSER TD TOWEL DISPENSER/RECEPTACLE TDR TRANSFER XFR TRANSFORMER XFMR TRANSPARENT TRANS TREAD T TRENCH DRAIN TD TRIGGER START TS TUNNEL TNL TURNBUCKLE TRNBKL TWISTED PAIR TP TWISTED PAIR SHIELDED TPS TYPICAL TYP ULTIMATE ULT ULTRA HIGH FREQUENCY UHF ULTRAVIOLET UV UNDER FLOOR DUCT UFD UNDERGROUND UGND UNEXCAVATED UNEX UNFINISHED UNFIN UNIFORM UNIFUNINTERRUPTIBLE POWER SUPPLY UPS UNION UN UNIT HEATER UH UNIT VENTILATOR UV UNIVERSAL UNIV UNLESS OTHERWISE NOTED UON URINAL UR UTILITY UTIL UTILITY SET US VACUUM VAC VACUUM BREAKER VB VACUUM CLEANER OUTLET VCO VACUUM PUMP VP VACUUM RETURN PUMP VRP VALVE V VALVE BOX VB VAPOR VAP VAPOR PROOF VAP PRF VAPOR RETARDER VR VARIABLE AIR VOLUME VAV VARIABLE FREQUENCY DRIVE VFD VEHICLE VEH VELOCITY VEL VENEER VNR VENT AIR DAMPER VADMPR VENT AIR DUCT VAD VENT AIR GRILLE VAGR VENTILATOR VENT VERTICAL VERT VERTICAL UNIT HEATER VUH VERY HIGH FREQUENCY VHF VERY HIGH OUTPUT VHO VESTIBULE VEST VIBRATION VIB VINYL VIN VINYL BASE VB VINYL COMPOSITION TILE VCT VINYL FACED ACOUSTIC TILE VFAT VINYL TILE VT VINYL WALL COVERING VWC VISCOSITY VISC VITREOUS VIT VITRIFIED CLAY TILE VCTVOLT V VOLT AMPERE VA VOLUME VOL VOLUME DAMPER VD WAFER WFR WAINSCOT WSCT WALL ASH URN WAU WALL CLEANOUT WCO WALL HUNG WH WALL HUNG CONVECTOR WHC WALL HYDRANT WH WALL LOUVER AND SCREEN WLS WALL TO WALL W/W WAREHOUSE WHSE WARM WHITE WW WARM WHITE DELUXE WWX WASH FOUNTAIN WF WASTE W WASTE DISPOSER WDSP WASTE OIL WO WASTE OIL VENT WOV WASTE RECEPTACLE WR WASTEWATER WW WATER WTR WATER CLOSET WC WATER COOLING COIL WCC WATER GAGE WG WATER HAMMER ARRESTER WHA WATER HEATER WHTR WATER LINE WL WATER RESISTANT WR WATER THERMOMETER WT WATERPROOFING WTRPRF WATT W WATTHOUR WH WEATHERSTRIPPING WS WEIGHT WT
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