Architectural glass is glass that is as a building material.It is most typically used as transparent glazing material in the building envelope,including windows in the external walls.Glass is also used for internal partions and as an architectural feature.When used in buildings,glass is often of a safety type, which include reinforced,toughened and laminated glasses.
The elaborate patterns found on figured(or Cathedral) rolled-plate glass are produced in a simila -r fashion to the rooled plate glass process except that the plate is cast between two rollers,one of whi -ich carries pattern,On occasion,bothe rollers can carry a pattern.The pattern is impressed upon the sh -eet by a printing roller which is brought down upon the glass as it leaves the main rolls while still soft This glass shows a pattern in high relief.The glass is then annealed in lehr.
The glass used for this purpose is typically whiter in colour than the clear glasses used for other ap -plications.
This glass can be laminated or toughened depending on the depth of the pattern to produce a saf -ety glass.
There are several types of laminated glasses manufactured using different types of glass and interl -ayers which produce different results when broken.
Laminated glass that is made up of annealed glass is normally used when safety is a concern,but te -mpering is not an option.Windshields are typically laminated glasses.When broken,the PVB layer prev -ents the glass from breaking apart,creating a"spider web"cracking pattern.
Tempered laminated glass is designed to shatter into small pieces,preventing possible injury.Whe -n both pieces of glass are broken it products a"wet blanket"effect and it will fall out of its opening.
Heat strengthened laminated glass is stronger than annealed,but not as strong as tempered.It is often used where security is a concern.It has a larger break pattern than tempered,but because it hold -s its shape it remains in the opening and can withstand more force for a longer period of time,makin -g it much more differcult to get through.
Laminated glass has similar properties to ballistic glass,but the two should not be confused.Both are made using a PVB interlayer,but they have drastically different tensile strength.Ballistic glass and laminated glass are both rated to different standards and have a different shatter patterns.
Different shatter patterns.
