AC Plywood

Finished Grade Plywood

ADA

Americans with Disabilities Act

ADJ

Adjustable

AFF

Above Finished Floor

Aggregate

Crushed gravel or rocks used in concrete mixture

AMP

Ampere

Anchor Bolt

A bolt set in concrete with the remaining attached to the bottom plate of the wall

APA

American Plywood Association

Apron

A raised panel below the window sill

ASTM

American Society of Testing Materials

Atrium

An inner court that is open to the exterior, usually surrounded on all sides by a roof

Balcony

A projecting platform surrounded by a railing, that is either supported by columns or brackets, or that is cantilevered

Baluster

A short post or pillar supporting the stair, deck, or porch railing

Base Moulding

Moulding at the bottom of a wall, located between the floor finish and wall

Basement

Lowest story or level, usually partially below ground level

Bay Window

An angular projection in the wall of a building, comprised of windows

Beam

A horizontal member supporting either a roof, ceiling, or floor joist

Bearing Wall

A wall which supports the load from walls, ceiling joists, or roof systems

Board and batten

Wide vertical wood siding with narrow pieces of trim that cover the joints

Bottom Plate

The horizontal structural member at the bottom of a framed wall

Bow Window

A circular projection in the wall of a building, comprised of windows

Breaker Box

Box containing circuit breakers that control the electric current

BTM

Bottom

Cantilever

A horizontal overhang, not supported underneath at its furthest point

Capital

The top of a column, can indicate a particular style

Casement Window

Window with the sash hung vertically, which swings outward on a hinge

Casing

The decorative trim around a window, door, or other opening

CD

Construction Documents

CDX Plywood

Exterior Grade of Plywood

Chair Railing

A moulding at chair back height

Clad Windows

Pre-finished wood, aluminum, or vinyl clad windows

Clerestory

exterior wall rising above an adjoining roof, usually containing windows

CMU

Concrete Masonry Unit

CO

Certificate of Occupancy

Cornice

Any projecting ornamental moulding at the top of a building or along a roof

Crawlspace

A foundation type, with Concrete Blocks (CMU) around the perimeter, typically raised a minimum of 3 feet, with a wood framed floor system

Cricket

A roof structure used to divert water along a valley or around a chimney

Crown Moulding

The decorative moulding at the top of a wall, between ceiling and wall

Curtain Wall

A non-load bearing exterior finish installed on a frame structure

Dentil Mould

A small square block pattern used in sequence, under a cornice

DH

Double Hung

DN

Down

Dormer

Created when placing a window opening vertically in a sloping roof, creating a roof structure of its own

Double-hung Window

A type of window where both upper and lower sashes can be lowered and raised

Dropped Ceiling

A false or decorative ceiling, installed below an existing ceiling; can be used to hide mechanical ductwork and pipes

Drywall

A gypsum wallboard used for interior sheathing; commonly known as sheetrock

DTL

Detail

Eaves

The underside of a roof which overhangs a wall

EIFS

Exterior Insulation Finish System, Synthetic Stucco System

EXT

Exterior

Facade

The front elevation of a structure

Fanlight

A half circular transom window over a window or door

Fascia

Trim board that covers the ends of the rafters

Fenestration

Windows or openings in a wall surface

Flashing

Sheet metal used at a roof's seams and joints, exterior walls, and around a chimney to keep water from penetrating the roof system

Flue

Venting for a fireplace or furnace

Fluting

Small concave slits running vertically on the shaft of a column or trim

Footing

A concrete beam/pad poured below the finished grade which distributes and carries the load of the structure

Footprint

Consists of a main floor's finished areas, garage and covered porches

Formwork

Forms for shaping concrete footings, slabs, walls, drives, walks, etc.

Foundation

Structure which supports a building

Foyer

A vestibule or entrance

FT

Foot

Furring Strip

A non-structural framing elements

Gable

triangular, vertical portion of a wall at the end of a pitched roof, popular in classical architecture

GALV

Galvanized

Gazebo

A freestanding roofed structure usually open on the sides, often located in a yard or park

Ground Fault Interrupter (GFI)

A circuit within an outlet, to protect against potential electrical shock in wet areas

Grout

Mortar used between tiles to secure and seal them in place

H

Height

HDR

Header

Header

A structural beam over a window, door or other opening

Hearth

The area in front of the fireplace, comprised of marble, tile or some other fireproof material, usually 18\" - 24\" deep

Hip Roof

A roof with sloping ends and sides meeting at a ridge

HORZ

Horizontal

Hose Bib

An exterior water faucet

HVAC

Heating, Venting and Air Conditioning

INTERIOR

Interior

Jamb

The vertical member of a window or door frame

Joists

The horizontal structural members in framing a floor or ceiling system

Keystone

A wedge shaped detail at the top of an arch, window or door

Knee Wall

A partial-height wall, usually in an attic or vaulted space

Lanai

An exterior patio or veranda

Lath

A metal mesh typically used to hold plaster or stucco on walls

Lattice

A framework of wood, plastic, or metal, used to visually screen an area

LF

Linear Foot

Lite

A single pane of glass

Loggia

A roofed open gallery, usually on an upper level

Mantel

The decorative shelf above a fireplace

MAX

Maximum

MDF

Medium Density Fiber Board

MIL

Thousandths of an Inch

MIN

Minimum

MISC

Miscellaneous

Mullion

The large vertical member between two adjoining windows

Mutin

The horizontal and vertical strips that hold the panes of glass together in a window sash

Newel

The top or bottom post of a stair rail

NFPA

National Fire Protection Agency

NTC

Not to Scale

OC

On Center

OSB

Oriented Strand Board; Structural Particle Board

Palladian Window

An arrangement of windows with a half round located above a rectangular window, typically with mutins or grills

Pediment

The triangular end of a gable roof or doorway

Pier Masonry

Concrete or wood column used to support a floor, roof or porch

Pilaster

A decorative rectangular or circular column projecting out from a wall surface

Pitch

The angle of a roof, expressed in inches per rise over inches per run

POLY

Polyurethane

Porte Cochere

A covered porch for automobiles to pass through

Portico

A roof supported by columns, usually at the main entrance

Pre-Fabricated

or assembled at an alternate location for ease of installation at the construction site

Pressure Treated

Chemically treated lumber to resist rot in moisture prevalent situations

PSF

Pounds Per Square Foot

PSI

Pounds Per Square Inch

PT

Pressure Treated

Quoin

A square stone or protruding brick pattern on the corner of a building

R-Value

The measurement of how insulation can slow down the transfer of hot and cold temperatures; the higher the R-value the better the insulation

RAD

Radius

Rafters

Structural roof members

Retaining Wall

A vertical structure built to hold and restrict the movement of land, usually made of concrete block, poured concrete, or brick, to hold and restrict the movement of land

Ridge

The apex of a roof, where the rafters meet for support

Riser

The vertical area between two steps

Rough-in

Abbreviation for the mechanical systems of a home

Run

The horizontal distance covered by stairs

Sash

The framework of a window or door which holds the glass in place

SBCCI

Standard Building Code Congress International

Scale

In blueprints, or scaled drawings, the relationship of the documents to the actual size of the building

SF

Square Feet

Sheathing

Exterior covering of a wall surface

Shoe Mould

Quarter round moulding installed at the base of a wall, usually between hard floor surfaces and a base molding

Sill

The lowest horizontal member of a window which helps to support the bottom sash

Slab

Concrete foundation, serves as the base floor surface of a building

Soffit

The underside of the roof overhang

Span

The distance between walls or columns

SPF

Spruce, Pine, Fir

STD

Standard

STL

Steel

Stool

The bottom horizontal trim element at the inside of a window, resembling a small shelf

Studs

Vertically framing member of a wall

Sub-Floor

The plywood floor system attached to floor joists when framing a structure

SYP

Southern Yellow Pine

T

Thick

T&G

Tongue and Groove

Threshold

A strip of metal, stone, wood or other material placed at the base of an exterior door

Top Plate

The horizontal member at the top of a framed wall

Tray Ceiling

A recessed area within a flat ceiling, usually at an angle

Tread

The horizontal surface of an individual stair step

Turret

A small tower on a corner of a building

UL

Underwriters Laboratory

UNO

Unless Noted Otherwise

Valley

The lower area where two roof planes meet

Vault

A ceiling which slopes to a point or arch

Veneer

Surface material, usually with no structural properties

VERT

Vertical

W

Wide or Width

Wainscot

Wood paneling, typically below a chair rail

Weephole

A small hole in exterior masonry construction for water to drain

WH

Water Heater

Zone

A specific area in a HVAC or security system that allows different areas in a building to be operated separately