GLASS

Question 1

manufactured by having molten glass pass through rollers to produce a nearly flat finish. However, the action of the rollers does leave the resulting sheets with some degree of distortion.

Answer 1

Sheet Glass

Question 2

Made from sodium silicate and calcium silicate, float glass is also known as soda-lime glass. The “float” name refers to the method used to produce it, where the molten glass is floated onto a bed of molten tin. This gives us a flat, clear, distortion-free glass.

Answer 2

Float Glass

Question 3

consists of layers of ordinary glass bonded by a transparent, flexible material. Think of it as a sandwich made up of two or more sheets of glass.

Answer 3

Laminated Glass

Question 4

also UV and soundproof, which explains its use in the construction of bridges and aquariums. It’s even the best choice for making glass canopies as it can reduce harmful rays.

Answer 4

Laminated Glass

Question 5

The applications include fixed and opening windows above waist height, shop fronts, as well as public places

Answer 5

Float Glass

Question 6

a type of glass that’s resistant to shattering. In other words, it doesn’t break into sharp pieces in the event of destruction.

Answer 6

Shatterproof Glass

Question 7

involves the addition of a plastic polyvinyl butyral resin to prevent it from forming sharp pieces. It’s commonly used in windows, floors, and skylights.

Answer 7

Shatterproof Glass

Question 8

This type of glass is produced by glazing float glass with a special thin coating on one side. This coating allows solar energy to pass through in one direction while minimizing the transfer of thermal energy in the other direction.

Answer 8

Energy-efficient Glass

Question 9

is both photocatalytic and hydrophobic. These two unique properties make it stain-proof, resulting in attractive appearance and easy maintenance.

Answer 9

Extra-clean / Self-cleaning Glass

Question 10

Used in ICUs and meeting rooms

Answer 10

Chromatic Glass

Question 11

can control the transparent efficiency to protect the interior from daylight. This type of glass may be electrochromic (has electric lamination), thermos-chromatic (has heat-sensitive lamination), or photochromic (has light-sensitive lamination).

Answer 11

Chromatic Glass

Question 12

is flat glass that’s been rolled onto one side during production. It’s available in many coloured tints and patterns, each with a distortion number from 1 to 5 (1 is very little distortion and 5 is a high degree of diffusion).

Answer 12

Patterned Glass

Question 13

is simply coloured glass. A certain type of ion is added to the normal glass mix to produce coloured glass, where the colour doesn’t affect other properties of the glass. For example, iron oxide gives green and sulphur gives blue.

Answer 13

Tinted Glass

Question 14

also called safety or tempered glass, is used extensively throughout the industry for its ability to resist breaking. If it does break, it does so into many small ‘safer’ pieces as opposed to large shards (like float glass).

Answer 14

Toughened Glass

Question 15

typically used in home interiors such as kitchen splashbacks (for its heat resistance), and shower screens, glass balustrade and swimming pool fencing.

Answer 15

Toughened Glass

Question 16

Wired glass has a wire mesh in the middle of its glass structure. The purpose of the wire is to hold the glass together in the event of cracking or breaking, however, it doesn’t stop the glass from forming sharp pieces when broken.

Answer 16

Wired Glass

Question 17

are made from two halves pressed and annealed during the melting process of glass. The applications for glass blocks include walls and skylights, providing a pleasant aesthetic appearance when light passes through.

Answer 17

Glass Blocks

Question 18

Used as an insulating filler, glass wool is made out of glass fibres. It’s also fire-resistant.

Answer 18

Glass Wool

Question 19

Also referred to as double-glazed glass, consists of two or three layers separated by air or vacuum. This air or vacuum acts as a good thermal insulator, so this glass doesn’t allow heat to pass through it.

Answer 19

Insulated Glazed Units

Question 20

These are typically made from float glass of 4mm to 6mm thickness with one side silvered. (reflective)

Answer 20

Mirrors

Question 21

5 Properties of Glass

Answer 21

Transparency, Workability and Recycle Property, Strength, Transmittance, U value

Question 22

this is the primary property of glass that allows us to see through it. Glass can be transparent from both sides or from one side only (the other side acts like a mirror).

Answer 22

Transparency

Question 23

glass has superior workability as it can be moulded into countless shapes or blown during melting. Also, any type of glass can be 100% recyclable and used as a raw material in construction. (Glass Property)

Answer 23

Workability and Recycle Property

Question 24

is determined by its modulus of rupture value. Glass is usually brittle but we can make it stronger by adding admixtures and laminates. (Glass Property)

Answer 24

Strength

Question 25

this is the visible fraction of light passing through the glass. (Glass Property)

Answer 25

Transmittance

Question 26

this represents how much heat transferred through the glass. Insulated glass units should have a low U value.(Glass Property)

Answer 26

U value