Architectural Glass to Resist Seismic and Extreme Climatic by Richard A. Behr

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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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.

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