Development of Tsunami Design Provisions for the ASCE 7-16 Standard

Author(s):  
Ian N. Robertson

Building design codes in the US do not include any consideration of tsunami design, even though past tsunamis have caused significant structural damage in coastal communities. In February 2011 the American Society of Civil Engineers (ASCE) formed a new Tsunami Loads and Effects subcommittee, which spent four years to develop a new chapter for inclusion in the ASCE7-16 Standard, Minimum Design Loads and Associated Criteria for Buildings and Other Structures. This new chapter has now been approved by the ASCE7 Main Committee and ASCE7-16 has been published with a new Chapter 6, Tsunami Loads and Effects. In December 2016, ASCE 7–16 was officially adopted by the International Code Council, with the new chapter on Tsunami Loads and Effects, for inclusion in the US model code, IBC 2018. The tsunami design provisions will apply to all coastal communities in California, Oregon, Washington State, Alaska and Hawaii. This paper presents an overview of the new ASCE7-16 Tsunami Loads and Effects design provisions and how they were developed based on field survey observations and laboratory experimentation.

2013 ◽  
Vol 29 (1_suppl) ◽  
pp. 99-126 ◽  
Author(s):  
Gary Chock ◽  
Lyle Carden ◽  
Ian Robertson ◽  
Michael Olsen ◽  
Guangren Yu

The structural details of numerous damaged buildings in the Tohoku region were documented soon after the 11 March 2011 Tohoku-oki earthquake and tsunami by a reconnaissance team sponsored by the American Society of Civil Engineers. Tsunami flow depths and velocities were determined based on analysis of video records and the observed effects on simple benchmark structures in the flow. Equations for various conditions of fluid loading were then validated through failure analyses completed for several buildings, using finite element modeling and LiDAR scans. These analysis tools were applied full-scale to buildings with clearly identified failure mechanisms to validate methodologies to be included in a new chapter on “Tsunami Loads and Effects” in the ASCE 7-2016 Standard, Minimum Design Loads for Buildings and Other Structures. These findings, together with an analysis of the inherent seismic inelastic capacities of mid-rise buildings, are relevant for establishing the loadings and performance objectives proposed for the new chapter on “Tsunami Loads and Effects” in the ASCE 7 Standard.


Author(s):  
Matthew A. Shadle

American Catholicism has long adapted to US liberal institutions. Progressive Catholicism has taken the liberal values of democratic participation and human rights and made them central to its interpretation of Catholic social teaching. This chapter explores in detail the thought of David Hollenbach, S.J., a leading representative of progressive Catholicism. Hollenbach has proposed an ethical framework for an economy aimed at the common good, ensuring that the basic needs of all are met and that all are able to participate in economic life. The chapter also looks at the US Catholic bishops’ 1986 pastoral letter Economic Justice for All, which emphasizes similar themes while also promoting collaboration between the different sectors of American society for the sake of the common good.


2021 ◽  
pp. 089719002110123
Author(s):  
Nicole Bradley ◽  
Yuman Lee ◽  
Muaz Sadeia

Introduction: The latest vancomycin therapeutic drug monitoring guidelines for serious MRSA infections have made a pivotal change in dosing, switching from targeting trough levels to AUC dosing. Because of these new recommendations, antimicrobial stewardship programs across the country are tasked with implementing AUC based dosing. Objectives: To assess plans for institutional adoption of vancomycin AUC dosing programs and perceptions of currently used programs in hospitals across the US. Methods: An electronic survey was distributed to members of the American College of Clinical Pharmacy IDprn Listserv and American Society of Health-System Pharmacists between May and June 2020 to assess current institutional vancomycin dosing. Institutional program use and multiple software user parameters were analyzed using descriptive statistics. Results: Two hundred two pharmacists responded to the survey with the majority practicing in institutions with 251-500 beds. Most respondents have yet to implement AUC dosing (142/202, 70.3%) with many of them planning to do so in the next year (81/142, 57.0%). Of those that already implemented AUC dosing programs, purchased Bayesian software (23/60, 38.3%) and homemade software (21/60, 35.0%) were the 2 methods most frequently utilized. Purchased Bayesian software users were more likely to recommend their software to other institutions and ranked user friendliness higher compared to non-purchased software. Conclusion: Most respondents have not made the switch to vancomycin AUC dosing, but there is a growing interest with many institutions looking to adopt a program within the next year.


2016 ◽  
Vol 106 (1) ◽  
pp. 119-127 ◽  
Author(s):  
Guilherme Borges ◽  
Cheryl J. Cherpitel ◽  
Ricardo Orozco ◽  
Sarah E. Zemore ◽  
Lynn Wallisch ◽  
...  

Hand ◽  
2021 ◽  
pp. 155894472110588
Author(s):  
Joseph Meyerson ◽  
Andrew Liechty ◽  
Tyler Shields ◽  
David Netscher

Background: Twenty percent of the US population is described as being rural and may have limited access to hand surgeons, especially on an emergency basis. Little is known about case type, call hours, employment status, and other relevant details of rural hand surgery. Methods: We surveyed members of the American Society of Surgery for the Hand to begin to describe the problem. Results: There were 471 responses from 2256 members surveyed with 387 completing 100% of questions asked. Ninety (19%) identified themselves as primarily located in a rural population and 381 (81%) in a metropolitan region. In our study, rural hand surgeons were more likely to be employed by a community hospital, followed by independent private practice, multispecialty group, academics, and then locum tenens. Rural surgeons’ practices were 80% solely hand surgery, while metropolitan surgeons’ practices were 89% ( P < .01). Metropolitan surgeons felt that of the transfers from rural facilities, 46% did not need emergency hand care and that 60% of the time, there was not actually a need for specialty hand surgery care. Conclusions: Our survey begins to shed light on the details of rural hand surgery practice. We found that rural surgeons are more likely to be employed in community hospitals and take more call. When available, hand surgery specialists could prevent unnecessary transfer of patients to metropolitan areas. More work needs to be done to describe the differences between rural and metropolitan hand surgery practices as well as create rural hand surgeons.


2004 ◽  
pp. 729-733
Author(s):  
Mengkai Zhang ◽  
Zhixiang Tan ◽  
Guangli Guo ◽  
Kazhong Deng

2020 ◽  
Vol 22 (4) ◽  
pp. 12-18
Author(s):  
Zhanna E. Belaya

The annual congress of the American Society of Bone and Mineral Research (ASBMR) presents the most significant results among the basic and clinical research in the field of osteoporosis and other metabolic bone diseases. Professor of Medicine John Bilezikian, M.D., Columbia University College of Physicians and Surgeons New York, New York and Lynda F. Bonewald Ph.D. Director, Indiana Center for Musculoskeletal Health, Indianapolis, Indiana, every year present the most outstanding abstracts before the ASBMR. However, not all of these researches are relevant for Russia, as some of them relates to the epidemiology and pharmacoeconomics of osteoporosis specifically in the US. This review presents only a very limited selection of congress abstracts, combined on topics that seem relevant today.


2021 ◽  
Vol 9 (1) ◽  
pp. 96-103
Author(s):  
Ruba Asim Hamza ◽  
Amged Osman Abdelatif

Sudan is one of the developing countries that suffers from a lack of electricity, where the national electrification rate is estimated at 38.5%. In order to solve this problem, it is possible to use renewable energy sources such as wind energy. Beside many aspects to be considered at the design of wind turbine foundations, more attention should be given to the geotechnical part. There are many types of foundations for wind turbines. The foundation must satisfy two design criteria: 1) It should be safe against bearing failure in soils under design loads and settlements during the life of the structure must not cause structural damage; 2) In addition to static loads, wind turbine foundations loads are extremely eccentrically and the loading is usually highly dynamic. Therefore, the selection of foundation type should consider these two criteria taking into account the nature and magnitude of these loads. This paper presents a review of different types of wind turbine foundations of focusing on on-shore wind turbine foundation types and the dynamic response of wind turbine. The paper also demonstrate experimentally the dynamic response of the wind turbines using wind tunnel facility test on a scaled model.  


2021 ◽  
Vol 3 (1) ◽  
pp. 64-73
Author(s):  
Saleem Dhobi

This article analyzes Updike’s 9/11 novel, Terrorist to explore the implications of stereotyping and cultural bigotry in US society in the aftermath. The novelist demonstrates the problematic in the cultural integration of minorities particularly Muslims and Jews as represented by Ahmad and Jack Levy. The primary motto of the article is to analyze the novel from the perspective of the protagonists Ahmad and Jack who suffer the cultural and social exclusion in American society. Ahmad is the victim of cultural bigotry and Jack Levy faces discriminatory practices at school. The isolation and marginalization of Ahmad and Jack respectively imply the ethnic crevices prevalent in the US society. The author demonstrates that the dominant cultural groups: European and African Americans do not accept the religious minorities: Muslims and Jews. Consequently, Muslims who are overtly the targets of cultural hatred and marginalization in the aftermath of the 9/11 as portrayed in the novel become hostile toward the Western culture. The efforts for integration of religious minorities are cosmetic as exemplified in the cases of Ahmad and Jack in the text. The writer makes a balance in representing both dominant and Muslim cultures to demonstrate the problems pertaining to ethnic groups at their failure in accommodating differences. The cultural separation and hatred prevalent in US society become obstacles even for those like Jack who seek to integrate. The paper eventually demonstrates the possibility of integration of religious minorities when both mainstream Americans and people of religious minorities conform to accepting the differences.


2004 ◽  
Vol 85 (6) ◽  
pp. 845-852 ◽  
Author(s):  
Mark Powell ◽  
David Bowman ◽  
David Gilhousen ◽  
Shirley Murillo ◽  
Nick Carrasco ◽  
...  

Photographs describing the wind exposure at automatic weather stations susceptible to tropical cyclones are now available on Web pages at the National Climatic Data Center and the National Data Buoy Center. Given the exposure for one of eight wind direction sectors, a user may estimate the aerodynamic roughness and correct mean wind measurements to an open-terrain exposure. The open-terrain exposure is consistent with the tropical cyclone advisories and forecasts issued by the National Weather Service, as well as building design wind load standards published by the American Society of Civil Engineers.


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