The Challenges of Writing a Structural Standard for Glass

Glass has been used as a prized construction material for centuries. Typically it has been used as a window infill, initially designed empirically where thickness available was adequate for the sizes available. As technology has proceeded, the size of glass available has increased by orders of ma...

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Autor principal:	R. Green
Formato:	article
Lenguaje:	EN
Publicado:	Challenging Glass Conference 2016
Materias:	Structural Glass Standard Robustness Retention Redundancy Clay industries. Ceramics. Glass TP785-869
Acceso en línea:	https://doaj.org/article/6af07a17b4b74a53826414c26c66a066
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spelling	oai:doaj.org-article:6af07a17b4b74a53826414c26c66a0662021-12-04T05:12:37ZThe Challenges of Writing a Structural Standard for Glass10.7480/cgc.5.22872589-8019https://doaj.org/article/6af07a17b4b74a53826414c26c66a0662016-06-01T00:00:00Zhttps://proceedings.challengingglass.com/index.php/cgc/article/view/159https://doaj.org/toc/2589-8019 Glass has been used as a prized construction material for centuries. Typically it has been used as a window infill, initially designed empirically where thickness available was adequate for the sizes available. As technology has proceeded, the size of glass available has increased by orders of magnitudes and standards have been written to guide the design in windows. Glass remains unique amongst the construction materials, that failure and replacement is considered an acceptable price to pay for the transparency of glass. The same logic has, however, limited the use of glass as a ‘structural’ material, despite the numerous built examples of it performing adequately. If it is acceptable for glass to break and collapse in some circumstances and not others, how does a standard define that boundary? The challenges for standardization are both numerical and philosophical. The means of forcing glass to behave with a robust manner with failure mechanisms that incorporate redundancy and retention generally comes through lamination. But the question is what to require when? Additionally, the performance of the glass in the composite is stress-time dependent and the stress itself is load-time-temperature dependent. This paper describes the philosophical and numerical challenges to writing a structural glass standard, the concepts of glass importance factor, post-failure loads and durations and progress that has been made in the drafting of an ASTM Guide to the Design of Structural Glass. R. GreenChallenging Glass ConferencearticleStructural GlassStandardRobustnessRetentionRedundancyClay industries. Ceramics. GlassTP785-869ENChallenging Glass Conference Proceedings, Vol 5 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Structural Glass Standard Robustness Retention Redundancy Clay industries. Ceramics. Glass TP785-869
spellingShingle	Structural Glass Standard Robustness Retention Redundancy Clay industries. Ceramics. Glass TP785-869 R. Green The Challenges of Writing a Structural Standard for Glass
description	Glass has been used as a prized construction material for centuries. Typically it has been used as a window infill, initially designed empirically where thickness available was adequate for the sizes available. As technology has proceeded, the size of glass available has increased by orders of magnitudes and standards have been written to guide the design in windows. Glass remains unique amongst the construction materials, that failure and replacement is considered an acceptable price to pay for the transparency of glass. The same logic has, however, limited the use of glass as a ‘structural’ material, despite the numerous built examples of it performing adequately. If it is acceptable for glass to break and collapse in some circumstances and not others, how does a standard define that boundary? The challenges for standardization are both numerical and philosophical. The means of forcing glass to behave with a robust manner with failure mechanisms that incorporate redundancy and retention generally comes through lamination. But the question is what to require when? Additionally, the performance of the glass in the composite is stress-time dependent and the stress itself is load-time-temperature dependent. This paper describes the philosophical and numerical challenges to writing a structural glass standard, the concepts of glass importance factor, post-failure loads and durations and progress that has been made in the drafting of an ASTM Guide to the Design of Structural Glass.
format	article
author	R. Green
author_facet	R. Green
author_sort	R. Green
title	The Challenges of Writing a Structural Standard for Glass
title_short	The Challenges of Writing a Structural Standard for Glass
title_full	The Challenges of Writing a Structural Standard for Glass
title_fullStr	The Challenges of Writing a Structural Standard for Glass
title_full_unstemmed	The Challenges of Writing a Structural Standard for Glass
title_sort	challenges of writing a structural standard for glass
publisher	Challenging Glass Conference
publishDate	2016
url	https://doaj.org/article/6af07a17b4b74a53826414c26c66a066
work_keys_str_mv	AT rgreen thechallengesofwritingastructuralstandardforglass AT rgreen challengesofwritingastructuralstandardforglass
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The Challenges of Writing a Structural Standard for Glass

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