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The Effects of High Winds on Existing Buildings in New York City.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	The Effects of High Winds on Existing Buildings in New York City./
作者:	Azimi, Elham.
面頁冊數:	1 online resource (278 pages)
附註:	Source: Dissertation Abstracts International, Volume: 78-10(E), Section: B.
標題:	Civil engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9781369850369

The Effects of High Winds on Existing Buildings in New York City.
Azimi, Elham.

The Effects of High Winds on Existing Buildings in New York City. - 1 online resource (278 pages)

Source: Dissertation Abstracts International, Volume: 78-10(E), Section: B.

Thesis (Ph.D.)--Polytechnic Institute of New York University, 2017.

Includes bibliographical references

Throughout human history, high winds, in particular, have devastated communities by damaging and toppling structures and downing trees, often resulting in injury or death. Even with the improvements to the construction industry, major structural failures occurred during the 19th and 20th centuries due to dynamic wind action. According to some major insurance and re-insurance groups, 70% of all natural disasters are related to wind. This reinforces the importance of making decisions based on wind impacts, and ultimately led to the realization that any structure can be made wind-resistant, with appropriate knowledge of the forces involved, and suitable design approaches.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369850369Subjects--Topical Terms:

561339
Civil engineering.
Index Terms--Genre/Form:

554714
Electronic books.

The Effects of High Winds on Existing Buildings in New York City.
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500 $a Source: Dissertation Abstracts International, Volume: 78-10(E), Section: B.
500 $a Adviser: Fletcher H. Griffis.
502 $a Thesis (Ph.D.)--Polytechnic Institute of New York University, 2017.
504 $a Includes bibliographical references
520 $a Throughout human history, high winds, in particular, have devastated communities by damaging and toppling structures and downing trees, often resulting in injury or death. Even with the improvements to the construction industry, major structural failures occurred during the 19th and 20th centuries due to dynamic wind action. According to some major insurance and re-insurance groups, 70% of all natural disasters are related to wind. This reinforces the importance of making decisions based on wind impacts, and ultimately led to the realization that any structure can be made wind-resistant, with appropriate knowledge of the forces involved, and suitable design approaches.
520 $a NYC is particularly vulnerable to high winds especially in connection with coastal storms. New York City Panel on Climate Change projections suggest an overall increase in the frequency of the most intense hurricanes, which are accompanied by high winds. The main objective of the study was to contribute to the state of the art in studying the impact of high winds on the existing buildings of NYC. Falling debris due to windy conditions is a particular concern as it threatens the lives and safety of New Yorkers. To determine the likelihood of Wind Generated Debris (WGD) from existing buildings in NYC, this study started by categorizing the buildings using factors such as height, age and governing building code, FISP compliance, construction methods and materials and occupancy. Then, the history of wind-related incidents was analyzed in the five boroughs from 2010 to 2015 on days that were reported windy by National Oceanic and Atmospheric Administration (NOAA). Of the total 44,000 wind-related incidents, only 1400 were related to existing buildings. The other incidents related to under construction or demolished buildings.
520 $a The relationship between the year each building was constructed and its potential vulnerability to WGD was assessed and turned out to be well described by a third-degree polynomial function. This emphasizes the importance of exterior building maintenance, which is a critical principle highlighted in previous codes (1938, 1968, and 2008).
520 $a Next, this study evaluated the particular building elements that might become WGD. This was accomplished by inspecting 500 buildings located in Manhattan that experienced wind-related incidents. The results illustrate that the building element most likely to produce WGD are windows, followed by exterior fixtures, roof elements, stairs/sidewalk shed, and balcony elements, respectively. Consequently, FISP inspectors should pay particular attention to these elements, which have higher probabilities of causing incidents.
520 $a This study also developed a comprehensive methodology to determine local wind speed by evaluating various major wind standards. Wind multipliers can be considered the basis of local wind determination; without them, the local wind would be meaningless. They convert national scale wind to the local level by incorporating the effects of direction, height and terrain, topography and shielding. Combining these effects can describe the site wind speed in any location.
520 $a The main four building codes were studied and every mention of a wind-related code were incorporated into an individual table. These tables were then compared with each other to determine the progress of wind-related codes over time. The controlling codes for current NYC buildings were established in 1938, 1968, 2008 and 2014.
520 $a The results of the study were combined in a model to improve and amend the current NYC FISP. The goal of this work was to contribute to a better understanding of the effect of high winds on existing buildings in NYC, and provide avenues of exploring new methodologies in this field.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
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650 4 $a Engineering. $3 561152
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710 2 $a Polytechnic Institute of New York University. $b Civil Engineering. $3 1186953
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