Skip to main content
Feb 26, 2016 / Haseeb Jamal -

5 Travel Myths You Need to Stop Believing Right Now

Feb 26, 2016 / Haseeb Jamal -

Canal Comes Alive with Lighted Boat Parade.

Classification of Glass based on Composition & Applications

By: Haseeb Jamal / On: Jan 22, 2017 / Glass, Types of, Shallow
Building Glass - Glass Types

Classification of Glass

Glass is usually classified into three main classes:

Soda lime glass

  • It is obtained from the fusion of a mixture of silica, lime, soda and alumina.
  • Powdered glass too may be added
  • This glass is also termed as Soda-ash glass, Soda glass or Soft glass
  • It is used for glazing doors, windows and making ordinary glass wares

Lead glass:

  • It is obtained from the fusion of a mixture of silica, lead and potash
  • Powdered glass too may be added
  • This glass is also termed as Flint glass
  • Lead glass has highly shining appearance
  • It is not affected by temperature
  • Cut glass work, electric bulbs and optical glass are made from it

Boro-silicate glass:

  • It is obtained from the fusion of a mixture of silica, borax, lime, and feldspar.
  • Powdered glass too may be added
  • This glass withstands high temperature
  • Laboratory equipment and kitchen utensils are made out of it

Commercial Forms of Glass

Glass is marketed in various commercial forms to suit varying field requirements.

Sheet Glass:

  • Most extensively used in engineering works
  • Size ► Thickness of 2, 2.5, 3, 4, 5 5.5 and 6.5 mm ► sheets up to 175 cm x 110 cm sizes are also available

Ordinary glazing quality: Used for general glazing

Selected glazing quality: Used for better quality works

Special selected quality: Used for superior quality works such as show cases etc

Plate glass:

  • It is made in thickness varying from 3mm to 32 mm and sizes up to 275cm x 90cmm.
  • It is stronger and more transparent than the sheet glass

Tempered plate glass:

  • Glass plate is heated and then suddenly cooled to tamper it
  • Tempered glass is much stronger than ordinary sheet glass.
  • Used for glazing entrance doors, table tops, shelves, counters etc

Laminated glass:

  • Two or more glass plates with intervening layers of transparent plastics are bound under effect of heat and pressure.
  • This type of glass is not broken into pieces when it breaks
  • Ensures safety at places where glass is liable to shatter
  • Glazing windows and doors

Wired glass:

  • It is a rough cast translucent (semi transparent) glass with special steel wire mesh of 0.46 to 0.56 mm dia.
  • Wire mesh completely embedded between the layers of glass during manufacture process
  • Fire resistant and safe during breakage

Insulating glass:

  • Two layers of glass separated by 6mm to 12mm of air space are sealed to provide heat insulation

Colored glass:

  • By adding oxides of metals to metal glass the finish product get colored
  • Used for decoration works in building construction

Flint glass:

  • It is lead glass which shines
  • Used for glass work as optical glass, for making electric bulbs.
Let us know in the comments what you think about the concepts in this article!

Subscribe to our Newsletter

Stay informed - subscribe to our newsletter.
The subscriber's email address.

Search AboutCivil

Related Civil-Engg. Content