A glazing unit used to reduce the transmission of sound through the glazed opening by bonding a soft interlayer between the layers of glass.

A ceiling of fibrous tiles that are highly absorbent of sound energy.

Calcined gypsum mixed with lightweight aggregates.

In one- and two-family dwellings not more than three stories high with separate means of egress, a building, the use of which is incidental to that of the main building and which is located on the same lot.

A building product which supplements a basic solid panel building such as a door, window, light transmitting panel, roof vent, etc.

Are extra items that can be furnished in addition to the base joist or joist girder. They include: headers, top chord extensions, extended ends, ceiling extensions, bottom chord extensions, sloped end bearings, bridging, bridging anchors, joist girder bottom chord bracing, or angle units (joist substitutes).

Signifies access without the necessity for removing a panel or similar obstruction.

A building or structure on the same lot as the main or principal building.

A raised finish floor surface consisting entirely of small, individually removable panels beneath which wiring, ductwork, and other services may be installed.

A small metal or wood door flush with a wall or ceiling surface which provides a closure over a valve or other operable device which is recessed into the wall or located above a ceiling. The access door may be keyed and lockable.

The wall in a room which has been given special design emphasis to attract attention from the adjacent walls.

A surface divider joint designed to allow free movement between new and existing construction or between different materials.

Removable metal or concrete floor panels about 18" to 24" square which are supported on short steel pedestals so that wiring and ductwork may be installed, changed and maintained below the floor. The raised floor may be carpeted or tiled to create a finished floor surface.

- Also referred to as the wear rating, it is the European Standard AC Rating. The range runs from the least resistant rating of AC1 To AC5, the most resistant to abrasion.

The relative ability to absorb sound and light.

A motif derived from the large leaf of the low-growing acanthus plant. Used at an early date by the Greeks for architectural scrolls on the capitals of the Corinthian column.

- The outside fan unit of the Air Conditioning system. It removes the heat from the freon gas and "turns" the gas back into a liquid and pumps the liquid back to the coil in the furnace.

Flat portion on top of a capital.

Motif in classical architecture found on Corinthian columns

- The main electrical ON-OFF switch near the A/C Condenser.