The Historical Narrative of the Standard Temperature–Time Heating Curve for Structures

Gales, John; Chorlton, Bronwyn; Jeanneret, Chloe

doi:10.1007/s10694-020-01040-7

Cited by 19 publications

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References 20 publications

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“…Dr. Babrauskas notes that he disagrees with a statement from our paper, that ''This study identifies that no currently available historical literature can support the definition of the temperature points which describe the standard temperature-time heating curve'' [1]. Within the context of our original publication, this statement is supported by explanation that there is no definitive reference to show how the ASTM committee established these specific time and temperature points, although it is not to say that there is no value to further research and opinions as each review leads closer to the source document.…”

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confidence: 57%

“…Dr. Babrauskas notes that the conclusion of our abstract is problematic, ''This reinforces contemporary discussion that the heating curve lacks scientific basis in its representation of a real fire'' [1]. In fact, the full statement in the abstract reads, ''Practitioners will find discussion from the temperature-time heating curve's development period that is useful for current philosophical discussions pertaining to the curve's use for combustible material testing.…”

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confidence: 69%

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confidence: 99%

“…It is already stated in our original paper that this subjective comparison is worthy of further exploration (''This information is plotted in Fig. 8 and requires continued research to definitively answer whether it is a best fit curve to test data and not real building fire data'' [1]). In our original paper, we have acknowledged Dr. Babrauskas' position that the curve represents an envelope of other tests.…”

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confidence: 99%

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Response to Vytenis Babrauskas “Comments on “The Historical Narrative of the Standard Temperature–Time Heating Curve for Structures” by Gales, et al.”

2021

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published review paper in Fire Technology discussing early narratives of fire testing and the origins of the standard temperature and time heating curve [1]. This article is meant to build upon previous work done by Drs. Babrauskas and Williamson as published in the late 1970s [2,3] given advancements in global digitization and our own digitization efforts. Given the link to their work [2, 3], the authorship team of John Gales, Bronwyn Chorlton, and Chloe Jeanneret are very honoured that Dr. Vytenis Babrauskas provided his feedback on our paper and his opinions on the current and future prognosis of the temperature-time heating curve for structures. In his comments, Dr. Babrauskas raises several valuable points that complement the work we have made, including highlighting the role of computational based methods in fire safety engineering practice, risk, as well as insight into the emergence and gradual acceptance of structural performance-based fire design. Dr. Babrauskas has given a useful perspective of the design situation in the United States in highlighting challenges in making changes to the standards.We would now like to address some portions of Dr. Babrauskas' feedback to ensure that our statements are interpreted correctly within their original context in our paper. We note that some feedback raised by Dr. Babrauskas could be considered already acknowledged and explained in our paper. We however acknowledge these may require additional commentary herein for emphasis and further background to avoid any misrepresentation.

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confidence: 57%

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confidence: 69%

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confidence: 99%

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confidence: 99%

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Response to Vytenis Babrauskas “Comments on “The Historical Narrative of the Standard Temperature–Time Heating Curve for Structures” by Gales, et al.”

2021

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“…This was the earliest significantly-developed effort at simultaneous doing two things: (1) Given certain prescribed temperature or heat flux boundary conditions, predict the thermal response of a reinforced concrete (RC) building frame. And, (2) given the thermal response of the frame, predict its structural performance. In other words, numerically compute the fire resistance by computer modeling.…”

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Comments on “The Historical Narrative of the Standard Temperature–Time Heating Curve for Structures” by Gales, et al.

Babrauskas

2021

Fire Technol

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Last year, Law and Bisby [1] published a review of the history of fire resistance test standards which focused on some of the less well known history of early developments in the UK. In a parallel effort, Prof. Gales and his colleagues at York University now provided a valuable review [2] of the history of some early developments in the US. Here I would like to offer some comments on the review by Gales et al. They build on my original efforts at the University of California in the 1970s [3-5] to reconstruct as much as possible of the early history of the development of the ASTM E119 [6] (originally, C19) fire resistance test. The research by Gales et al. will prove to be equally valuable to future researchers, since they ably identified a number of early studies which my research had not uncovered. I commend them for this important addition to the historical understanding of fire resistance testing concepts.Here, I would like to focus on some of their subjective interpretations, several of which I do not agree with. First, I would like to mention that, when I was doing my research in the mid-1970s, the fire science profession, at least in the US, was in its infancy. As a result, even though we had no internet then and only very primitive (institutional, not personal) computers, the practitioners were infused with tremendous enthusiasm for the potential of the profession. Even though we did not explicitly state this, it was basically felt that, in the space of a few short years, fire resistance testing would become an obsolete anachronism. Practitioners, instead, would use numerical modeling for such purposes. Hindsight, of course, has shown otherwise. In fact, what happened is that two separate tracks emerged. For most buildings, ASTM E119 testing continues to be the basis of what shows

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Gernay

2024

Fire and Materials

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The Historical Narrative of the Standard Temperature–Time Heating Curve for Structures

Cited by 19 publications

References 20 publications

Response to Vytenis Babrauskas “Comments on “The Historical Narrative of the Standard Temperature–Time Heating Curve for Structures” by Gales, et al.”

Response to Vytenis Babrauskas “Comments on “The Historical Narrative of the Standard Temperature–Time Heating Curve for Structures” by Gales, et al.”

Comments on “The Historical Narrative of the Standard Temperature–Time Heating Curve for Structures” by Gales, et al.

Response to “Commentary on DHP concept”

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