03 Glass and Glazing Flashcards
What glass is reheated to make Tempered Glass?
Annealed Glass
A flat, soda-lime-silica glass that is extremely smooth and nearly distortion-free.
Made by pouring molten glass onto a surface of molten tin and allowing it to cool slowly.
Float Glass
A flat soda-lime-silica glass formed by rolling molten glass into a plate (rolled glass) that is subsequently ground and polished after cooling.
Thicknesses ranging from 1/8 in to 1/4 in.
Plate Glass
A flat soda-lime-silica glass fabricated by drawing the molten glass form a cylinder, dividing it lengthwise and flattening it.
Sheet Glass
A glass unit consisting of two or more sheets of glass separated by hermetically-sealed airspaces.
Insulating Glass
Glass having a thin, translucent, metallic coating bonded to the exterior or interior surface to reflect a portion of the light and radiant heat that strike it.
Reflective Glass
Widely used in the transportation industry but also used in the building industry.
Made of two sheets of plate or sheet glass bonded by a thin, tough layer of polyvinyl butyral resin, a transparent plastic.
Will not easily break, but glass pieces will stick together forming a spider web-like pattern.
Thickness 9/64”, 7/32”, 15/64” and 1/4”.
7 sq.ft for 9/64”, and 15 sqm for the rest.
Laminated Glass
A type of safety Glass made by reheating and suddenly cooling plate glass.
This glass has increased strength and will shatter in small, square pieces when broken.
Used for swinging doors, sliding doors, skating rink enclosures, etc.
Thickness 1/2”, 3/8”. 5/l8”, 3/4” and 1”
Tempered Plate Glass / Toughened Glass
A glass without internal stresses caused by heat treatment. It is heated above a transition point and then allowed to cool slowly without being quenched.
4-6 times stronger than annealed glass.
Annealed glass breaks into large, jagged shards that can cause serious injury.
Annealed Glass
A type of glass that has increased strength. The glass is chemically strengthened by submerging the glass in a bath containing potassium salt at 450 C.
6-8 times the strength of annealed glass.
May be cut after strengthening unlike toughened glass or temperature glass.
Chemically-Strengthened Glass
A rolled glass in which wire mesh is inserted during the process of manufacture.
Great resistance to shattering through impact.
Thickness 7/32”, 1/4”, and 3/8”.
Widths 47-49 inches. Lengths up to 178 inches.
Wired Glass
Glass is made by adding ingredients to the mix used in making slate glass so that the finished product is pale bluish-green or gray. This type of glass is widely used for glazing in office buildings, schools, and hospitals.
Heat-Absorbing Plate Glass / Tinted Glass
Glass having coating that is microscopically thin, virtually invisible, or metallic oxide layers deposited on windows or skylight glazing surface primarily to reduce the U-factor by suppressing radiative heat flow.
Low Emissivity Glass (Low-E Glass)
Consists of two or more layers of glazing separated by a spacer along the edge and sealed to create dead airspace between layers. This type of glass provides good thermal and sound insulation.
Insulated Glazing or Double Glazing
Annealed glass that is partially tempered by a process of reheating and sudden cooling.
Heat-Strengthened Glass
Laminated or insulating glass used for sound control.
Acoustical Glass
Glass having an irregular surface pattern formed in the rolling process to obscure vision or to diffuse light.
Patterned Glass
A transparent sheet of glass that is turned opaque through sandblasting or acid etching.
Frosted Glass (by sandblasting or etching)
Refers either to the material or colored glass or to the art and craft working with it. Stained Glass is colored using metallic salts during its manufacturing process.
Stained Glass
A transparent, hollow block of glass with clear, textured or patterned faces by fusing two halves together with partial inside and used for glazing openings.
Good for sound-proofing.
3” thickness.
Glass Block / Glass Brick
A glazing system in which sheets of tempered glass are suspended from special clamps, stabilized by perpendicular stiffeners of tempered glass, and joined by a structural silicone sealant or by metal patch plates.
Curtain Wall System
This type of glass helps maintain room temperature.
However, this glass has been blamed for damage to adjacent buildings and parked vehicles due to the amount of heat that it reflects back.
Low-E Glass
A glass having one or both sides acid-etched or sandblasted to obscure vision.
Obscure Glass
For reflective glass, what will you see at around 8 pm when you are inside and the lights are on?
In summary, it is always possible to see through one side of reflective window film; which side is entirely dependent on the light. If it’s brighter outside, then you will be able to see through the film from the inside out.
