Explanation of drawing abbreviations

Architectural and design drawings often have abbreviations on them that most people may not understand.  Some of the more common examples that may be found on residential drawings include:

Abbreviation               Short for:

@

At

AFF

Above Finished Floor

ANOD

Anodized

APPROX

Approximate

BDRM

Bedroom

BSMT

Basement

CL

Centreline

CLG

Ceiling

CLR

Clear

COL

Column

CONC

Concrete

CONT

Continuous

CTR

Center

DIA

Diameter

DIM

Dimension

DN

Down

EL

Elevation

ELECT

Electrical

ELEV

Elevator, Elevation

EQ.

Equal

EQUIP

Equipment

FIN. DIM.

Finished Dimension

FLASH

Flashing

FLG

Flooring

FLR

Floor

FLUOR

Fluorescent

FND

Foundation

FO

Face of

FURN

Furniture

GL

Glass

GWB

Gypsum Wall Board (drywall)

HB

Hose Bib

HDR

Header

HVAC

Heating, Ventilating & Air Conditioning

IN

Inch

INT

Interior

INCAND

Incandescent

INSUL

Insulation

INT

Interior

KIT

Kitchen

LAV

Lavatory

LH

Left Hand

MECH

Mechanical

MFR

Manufacture, Manufacturer

MIN

Minimum

MISC

Miscellaneous

MULL

Mullion

NRC

Noise Reduction Coefficient

NTS

Not to Scale

OC

On Centre

OPNG

Opening

OH

Overhead

PERP

Perpendicular

PLYWD

Plywood

PT

Pressure Treated

PREFAB

Prefabricated

QTY

Quantity

RD

Roof Drain

RECEP

Receptacle

REQD

Required

RH

Right Hand

RM

Room

R/O

Rough Opening

SC

Solid Core

SCHED

Schedule

SF

Square Foot

SHTHG

Sheathing

SHWR

Shower

SNT

Sealant

SPEC

Specification

SQ

Square

SS

Stainless Steel

T&G

Tongue & Groove

TH

Thermostat

THRESH

Threshold

TYP

Typical

UNFIN

Unfinished

VAC

Vacuum

W/

With

W/O

Without

WC

Watercloset

WIN

Window

WP

Waterproof