![]() Tempered glass? For all you know, it might well be tampered glass. Internal defects and inclusions in the glass And more recently, a tempered glass table fell prey to this factor as well.ĥ. The John Hancock Tower in Boston, for one, faced extensive glass breakage the same exact way. ![]() This might ultimately lead to the development of bending stresses, which may prove too powerful for the glass and cause breakage. Thermal stress is also an indisputable factor, and it’s most common in large pieces of “sealed insulating glass with heavy-absorbing (reflective) coatings.” As the coating’s commonly applied to the “number two” surface (the inside face of the outside lite), the outside lite of glass will tend to heat up more than the inside lite, as the coating turns radiant heat from the Sun into sensible heat.Īs a result, the outer lite will expand due to the heat, and the entire unit starts to bend outwards. This is because it hasn’t been properly engineered for wind loads on the site, which makes it vulnerable to external stresses. If a pane lacks the adequate amount of glass thickness, it’ll ultimately be susceptible to breakage. If the pressure manages to exceed the strength of the glass, the tempered glass will ultimately break. However, if no space is catered to the perimeter of the unit, the glass will ultimately bind against the frame, causing internal stresses to accumulate in the glass. It’s worth noting that the gaskets that hold the glass in the frame are also usually tough, in order to support the glass against wind buffeting. As such, almost all modern glass is situated upon resilient blocks at the base with space for expansion at the sides and top. ![]() Lest you’re unaware, glass actually expands and contracts with changes in temperature and wind deflections. It’s worth noting that should tempered glass receive such a fate, the entire unit usually ends up breaking altogether. Granted, these minor nicks might not cause immediate breakage, but as the glass expands and contracts over time, stress concentrations could potentially form around the nick, leading to breakage. Fasteners such as nails and screws (that’re used to attach glass stops) are also liable to nick the glass edges if they’re installed at an improper angle. You watch as the kid opens his mouth: What Makes Tempered Glass Shatter? Here Are 5 Possible Factors Image: AlibabaĪccording to Wikipedia, it’s relatively easy for the glaziers to nick or even chip the edges of the glass (with various tools) while glass is being moved and installed. Perplexed, you beget: “Pray tell, what reasons do thou speaketh?” “ Tempered glass may be ideal for most scenarios, but there are situations in which they may spontaneously break for seemingly no reason whatsoever.” At that moment, a bespectacled kid introduces himself as Mr Wee Kee Pia and proceeds to explain:
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