By Richard A. Behr
Glass is more and more getting used as a structural fabric in new constructions. The structural envelope could consist both fullyyt or in part of glass, and this pattern to eschew conventional fabrics resembling brick and urban for steel-framed, glass clad structures offers inherent difficulties. a huge factor is the functionality of glazing in the course of earthquakes and severe climatic occasions, comparable to windstorms and heavy snow quite a bit. This authoritative e-book studies the present state-of-the paintings in glass and glazing expertise to withstand failure because of those traditional occasions.
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Additional resources for Architectural Glass to Resist Seismic and Extreme Climatic Events
Buildings with safety ﬁlm applied to glazing for either protection against burglar, impact, or earthquake damage performed better than uncoated Glazing and curtain wall systems to resist earthquakes . 41 glazing. However, there were also instances where the glass pane in ﬁlmcoated windows fell out as a unit like a ‘wet blanket’, primarily because in such applications the ﬁlm had been ‘unanchored’ (also known as ‘daylight application’), which means that the ﬁlm was not connected to the glazing frame to help retain the glass in the event of breakage.
2006c, Schwartz, 1984a, 1984b). For example, glass panels with cut, ground, seamed, or polished ﬁnishes will differ in their crack initiation drift capacity because ﬂaw characteristics of each ﬁnish type will differ in their severity and distribution. Edge ﬂaws created by scoring (as when annealed monolithic glass is ‘scored and broken’ to fabricate given panel dimensions) are points of severe stress concentrations that generally weaken the glass (Schwartz, 1984a, 1984b). This fabrication method may accelerate the glass failure even at normal service loads.
The last part of the chapter focuses on recent developments in research and products to improve glazing system behavior in earthquakes and identiﬁes relevant R&D areas for follow-up efforts. One study relates to the response of CW mock-ups glazed with annealed monolithic architectural 30 Architectural glass to resist seismic and extreme climatic events glass panels ﬁtted with an adhered and mechanically anchored polyethylene terephthalate (PET) ﬁlm under simulated earthquake conditions. Another study that is reviewed is a recently developed seismic damage mitigation concept, which involves using architectural glass panels with modiﬁed corner geometries and edge ﬁnish conditions to improve their resistance to earthquake damage.