AMACE BT1-Glass and Glazing

Glazing

a transparent part of a wall, usually made

of glass or plastic (acrylic and polycarbonate).

Glass

is a hard brittle inorganic substance, ordinarily

transparent or translucent; produced by melting

mixture of silica, a flux and a stabilizer; while molten,

maybe blown, drawn, rolled, pressed or cast to a

variety of shapes

SHEET GLASS

Sometimes called ordinary window glass or

drawn glass.

PLATE GLASS

Higher quality version of sheet glass; same

chemical composition as sheet glass

FLOAT GLASS

A sheet of glass made by floating molten glass

on a bed of molten tin. Combination properties of

sheet and plate glass

ANNEALED GLASS

Glass without internal stresses caused by heat

treatment (ie. by rapid cooling, or by toughening

or heat strengthening).

ROLLED AND ROUGH CAST GLASS

Diffuses light and low reflecting and absorption

properties - transmits 90 to 93% of light rays

striking it

HEAT-ABSORBING PLATE GLASS

Similar process with slate glass but with

additional ingredient – coloring agents to the

molten magma. Most common colors are - bluish-

green, bronze and gray.

LAMINATED GLASS

Includes safety and bullet proof glass - withstand

firearm attack and explosions.

TEMPERED GLASS

Also called toughened glass

3-5 times as strong as regular plate of the same

thickness – and are in resisting compressive

forces and fracture due to strain or thermal

shock. High resistance to breakage

STAINED GLASS

As a material the term, it generally

refers to glass that has been colored by adding

metallic salts during its manufacture.

CHEMICALLY STRENGTHENED GLASS

The glass is chemically strengthened by

submerging the glass in a bath containing a

potassium salt (typically potassium nitrate) at 450

°C.

TINTED GLASS

Also called heat-absorbing glass

Has a chemical admixture to absorb a portion

of the radiant heat and visible light that

strike it.

REFLECTIVE GLASS

Has a thin, translucent metallic coating to reflect

a portion of the light and radiant heat that strike it.

The coating may be applied to one surface

of single glazing, in between the plies of

laminated glass, or to the exterior or

interior surfaces of insulating glass.

PATTERNED GLASS

Has a linear or geometric surface pattern formed

in the rolling process to obscure vision or to

diffuse light..

Obscure glass has one or both sides acid-etched

or sand-blasted to obscure vision.

Either process may weaken the glass and makes

it difficult to clean.

WIRED GLASS

A flat or patterned glass having a square or

diamond wire mesh embedded within it to provide

additional strength, prevent shattering in the

event of breakage or excessive heat.

LOW EMISSIVITY GLASS (LOW-E)

coatings are microscopically thin, virtually

invisible, metal or metallic oxide layers deposited

on a window or skylight glazing surface.

Reduce the U-factor by suppressing heat flow.

SELF-CLEANING GLASS

Based on thin film titanium dioxide coating.

The glass cleans itself in two stages. The 'photo

catalytic' stage of the process breaks down the

organic dirt on the glass using ultraviolet in

sunlight (even on overcast days) and makes the

glass hydrophilic (normally glass is hydrophobic).

During the following 'hydrophilic' stage rain

washes away the dirt - leaving almost no streaks,

because hydrophilic glass spreads the water

evenly over its surface.

INSULATED GLAZING

Also known as - double glazing

A piece of glazing consisting of two or more

layers of glazing separated by a spacer along the

edge and sealed to create a dead air space

between the layers.

Reduce external noise but still permit the entry of

natural light.

GLASS BRICK

Made into two separate halves, which are heat-

sealed together to form a hollow unit with

reasonably high thermal efficiency and sound

insulation.

Comparable in many ways to unit masonry but

have the added feature of transmitting light.