Glass vocabulary |
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Cutout
The removal of an internal section of a glass panel... |
Containment
Term that describes the property of glass or glazing where it prevents the passage (falling) of peop.. |
Ultimate limit state (ULS)
The wind pressure or load at which failure of the integrity of the glazing can be expected. The same.. |
Ultimate wind pressure (UWP)
The wind pressure or load at which failure of the integrity of the glazing can be expected. The same.. |
Viscosity
The term used to designate the degree of fluidity of a liquid... |
Reglazing
General term that means a general replacement of the glazing because of failure, renovation, repair,.. |
Watertight
The ability of a material to withstand water and to prevent the passage of water through it... |
Shortwave radiation
The part of electromagnetic radiation (280 to 2500 nm wavelength) that is radiated by the sun. The m.. |
Solar Factor G
Total energy transmitted through glass... |
Ambient Temperature
The surrounding temperature at any given time. The surrounding temperature varies depending on the l.. |
Application life
A generic term usually used in reference to sealants. Application life determines the period of time.. |
Back Clearance
Space between the back of the glass and back of the frame surround that forms an angle into which th.. |
Back Putty
That portion of the compound remaining between the back of the rebate and glass after the glass has .. |
Backing Road
A polyethylene or polyurethane foam material installed in the joint to control sealant joint depth, .. |
Bite
The amount of overlap between the frame or fin support. Also referred to as structural bite, it is t.. |
Blemish
A term describing a noticeable imperfection on the surface of glass... |
Breather Tube
A very small metal tube of designated length placed into the IGU spacer during manufacture of the sp.. |
Bubble
A gas bubble trapped inside the float glass and obscure glass. In laminated glass, gas bubbles are p.. |
Bullion
A glass panel having a formed antique-style circle in its center for decorative effect. Originally t.. |
C.T.S.
Abbreviation for cut-to-size glass. .. |
CAD
Abbreviation for computer aided design. This refers to special software programs installed on comput.. |
Cases
Wooden cases in which sheets of glass are packed. They are specially used for transporting and stori.. |
Deep Bite
A sandblasting technique in which an extra deep sandblast is used in order to create depth in an ima.. |
Decibel
The scale used to measure or describe loudness of sound or sound insulation and sound reduction inde.. |
Diffusing
A phenomena in which the incident light is randomly scattered while still allowing for light t.. |
Distance Pieces
The term describing a section of resilient, nonabsorbent material used to prevent the displacement o.. |
Draw Lines
The direction of flow (or pull) of the glass during the production of sheet glass. Draw lines were p.. |
Durometer
An instrument for measuring the relative hardness of materials such as rubber. Also, the term often .. |
DXF File
A computer file that contains a specific shape or drawing. This file can be processed by the CNC mac.. |
Edge Block
Any type of barrier (block) that prevents the sideways movement of glass... |
EPDM
A synthetic rubber prepared by polymerizing ethylene, propylene, and a diene monomer... |
EI
Classification for insulation of fire resistant glass... |
E
Classification for integrity of fire resistant glass... |
EW
Classification for reduced heat radiation of fire resistant glass... |
EN
European standard. These are being adopted as British standards and so becoming BS EN. .. |
Equlibrium
A very general term used to describe a stable situation. In the glass sector it expresses the situat.. |
End Cap
Wooden boxes held onto the ends of a pack of glass with metal banding. One of the standard methods o.. |
Fading
A phenomenon in which when solar radiation enters the room it is absorbed by the exposed furnishings.. |
Sloped Overhead Glazing
Glazing that is sloped more than 15° from the vertical position. When sloped glazing is used ove.. |
Finishing
A very general term. Used mostly to refer to the final step in glass processing or cold-end working... |
Faults
Any type of imperfection of glass, including bubble, blemish, bloom, seed, chip, and feather... |
Fiery
Term describing a poorly annealed glass that resulted from poor cutting... |
Face Clearance
Describes the distance between the glass and the rebate upstand. This is usually filled with a gaske.. |
Finger Slots
A process technique in which a slot is produced on the glass surface by grinding. The slot is used a.. |
Flatbed
A type of truck with a flat open area for standing the load on. This sort of vehicle might be used f.. |
Flat Ground Edge
A process in which the edges of the glass are completely flattened by a grinding machine, after whic.. |
Fins
Glass fins are used for supporting glass panels, usually vertical, located 90° to the glazed sur.. |
Flemish
A type of decorative obscure glass that contains a semitransparent directional pattern. This pattern.. |
Frameless
A type of glazing system that is not supported by a frame on any of the edges. The alternative to fr.. |
Floatliner
A specially adapted truck that can carry jumbo-sized sheets of float glass positioned inside on a st.. |
Frit
A general term with several different meanings. Most commonly, a term that describes the procedure i.. |
Fritted
Sheet of float glass to which a screen printed pattern has been applied to form screen printed glass.. |
Fixing
Term with several meanings depending on the context in which it is used. Fixing can mean the method .. |
Flare
A protrusion on the edge of a panel of a glass... |
Flush Glazing
Glazing with no fixings or parts of the glazing system protruding beyond the outer surface of the gl.. |
G1/S
Obsolete British Standard Specification for bullet resistance properties in glass... |
Girth
Measurement around the perimeter of a curve or bend... |
Glare
Excessive brightness that can be caused by either direct or indirect viewing of a light source. It i.. |
Glare Reduction
A general ability to reduce glare problems, either by reducing the overall illumination or by diffus.. |
Glazing Factor
Another term for radiometric properties: solar properties and optical properties... |
Glazing Platform
The horizontal leg of the rebate in a frame, upon which the glass is positioned when it is glazed... |
Greenhouse Effect
A very general term used in reference to environmental issues and applied to the phenomenon of keepi.. |
Hand-Ball
A term used by a glass worker that describes loading or unloading glass sheets from a vehicle or to .. |
Half Round
Type of working of the edge of glass in which a cut edge is rounded to a quarter circle... |
Handling Glass
All activities involved in the transfer of glass from factory to storage area and to the building si.. |
Hazardous Areas
Another term for critical locations or critical areas. These are areas to which special care has to .. |
Hermetic Seal
An edge seal used in the process of assembling an IG unit. The main purpose of the hermetic seal is .. |
Heat Transfer
General term that describes the transfer or passage of heat. Heat transfer can occur by one of three.. |
Heat Transfer Coefficient
A unit of measure of the rate at which heat can cross a boundary or surface. This can be achieved by.. |
Solar Factor
The solar factor (or g-value) measures the percentage of heat that passes through the glass. The low.. |
Spall
Small fragments or pieces of glass that are ejected from one face of a pane of laminated glass when .. |
Transparent
Capable of transmitting light so that objects or images can be seen as if there were no intervening .. |
UDL
Means uniformly distributed load on the glass or any other surface... |
UV Transmittance
The ratio of the amount of total UV solar energy (300 to 380 nanometers) that is allowed to pass thr.. |
Vaseline
Glass that is the color of petroleum jelly, emits slight radioactivity, and glows neon green under u.. |
Visible Light-Spectrum
The visible spectrum (or sometimes called the optical spectrum) is the portion of the electromagneti.. |
Vision Area
A generic term that refers mostly to a specific part of a building such as façade or curtain .. |
Wind load
Pressure caused by direct force of the wind that acts on an external glazing or surface of the build.. |
Wind Pressure
Wind has pressure due to its velocity. This pressure is calculated from the equation Vp = 0.6V².. |
Wind Resistance
Ability of a glass surface to withstand specific wind load that is required in a specific project. D.. |
Heat Reflecting Glass
A normal glass that has been surface treated with a special coating to create a glass surface that r.. |
Hi-ab
A transport vehicle, usually a truck, with its own crane mounted in it. This vehicle is used for del.. |
Hot box
A special device used to measure the U value of IG units. The hot box can also be used for the overa.. |
Gloss
The degree of shine or luster on the surface of a paint or ceramic ink... |
Hydrofluoric Acid
An acid that is used in the acid etching process. One of the few acids that can directly attack glas.. |
Hickey
A term used to describe imperfections present in a screen printed coating, caused by contamination... |
Horticultural glass
Term used for any glass used for glass houses and other horticultural applications. Most usually a c.. |
Hydrophilic
Term used for self cleaning glass in which the coating attracts water so that rain flows down the pa.. |
Photocatalytic
Photocatalytic means that the active integrated coating on the outside of the glass absorbs the sun&.. |
Imagelite
Term for a type of laminated glass. A laminate glass with a picture within the interlayer... |
Infrared
Infrared radiation is radiation at a longer wavelength than visible light, which means it cannot be .. |
Intumescent interlayer
A name for a special interlayer used in fire resistant laminated glass. With laminated glass that us.. |
Iridescence
Iridescence is an optical phenomenon that sometime occurs on glass surfaces. This optical effect can.. |
Aspect ratio
This term generally describes the ratio between two dimensions of an object. In glass terminology, t.. |
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