scholarly journals Development of cladding contribution functions for seismic loss estimation

Author(s):  
Shreedhar Khakurel ◽  
Trevor Z. Yeow ◽  
Frankie Chen ◽  
Zam Wang ◽  
Sandip K. Saha ◽  
...  

One method to rapidly estimate seismic losses during the structural design phase is to use contribution functions. These are relationships between expected losses (e.g. damage repair costs, downtime, and injury) for a wide range of building components (e.g. cladding, partitions, and ceilings) and the building’s response. This study aims to develop contribution functions for common types of cladding used in different types of buildings considering damage repair costs. In the first part of this study, a building survey was performed to identify types and quantity of cladding used in residential, commercial and industrial buildings in Christchurch, New Zealand; where it was found that the most common cladding types are glazing, masonry veneer, monolithic cladding and precast panels. The data collected during the survey was also used to develop cladding distribution (i.e. density) functions. The second step involved identifying fragility functions from relevant literature which are applicable to the cladding detailing used in New Zealand. The third step involved surveying consultants, suppliers and builders on typical repair/replacement cost. Finally, Monte Carlo simulations were performed to combine the cladding density function with the fragility functions and the repair cost for each type of cladding to derive contribution functions for various types of cladding and building usage. An example (case study) is provided to demonstrate its usage.

2021 ◽  
Author(s):  
◽  
Elise Caddigan

<p>Old St Paul’s is an iconic New Zealand heritage site managed by Heritage New Zealand.¹ It is a site that tells both national and local stories and draws a wide range of international and domestic visitors. Key recommendations made by the New Zealand Ministry of Tourism in their 2010 and 2015 strategies were that the country is no longer automatically perceived as ‘authentic’² by international visitors, and that heritage in New Zealand should be striving to deliver engaging, educational and rich cultural and social experiences.  Using Old St. Paul’s as a case study, this research asks if New Zealand heritage sites are providing exhibitions, interpretation and stories that successfully communicate the site management’s presentation goals to visitors. This relationship is evaluated through the exhibitions and interpretation used by site management, and compared with visitor understanding and their experience of these.  This research uses interviews and visitor surveys to gauge the management/visitor relationship at Old St. Paul’s. An in-depth interview with the site’s manager is analysed and presented comparatively against the results gained from conducting visitor surveys. This research provides an investigation into contemporary heritage practice in New Zealand and offers a pilot study for future development in the heritage sector. Furthermore, it is suggested that heritage sites could adopt similar summative practices to those used in the museum sector in order to monitor visitor satisfaction and the perception of quality.</p>


Radiocarbon ◽  
2005 ◽  
Vol 47 (3) ◽  
pp. 367-375 ◽  
Author(s):  
Thomas Higham ◽  
Atholl Anderson ◽  
Christopher Bronk Ramsey ◽  
Christine Tompkins

Accelerator mass spectrometry (AMS) determinations of rat bones from natural and cultural sites in New Zealand have produced ages at odds with the accepted date for early human settlement by over 1000 yr. Since rats are a human commensal, this implies either an earlier visitation by people or problems with the reliability of the AMS determinations. One explanation for the extreme ages is dietary variation involving movement of depleted radiocarbon through dietary food chains to rats. To investigate this, we 14C dated fauna from the previously well-dated site of Shag River Mouth. The faunal remains were of species that consumed carbon derived from a variety of environments within the orbit of the site, including the estuary, river, land, and sea. The 14C results showed a wide range in age among estuarine and freshwater species. Terrestrial and marine organisms produced ages within expectations. We also found differences between bone dated using the Oxford ultrafiltration method and those treated using the filtered gelatin method. This implies that contamination could also be of greater importance than previously thought.


2018 ◽  
pp. 71-85 ◽  
Author(s):  
Qunyan Maggie Zhong

With the advent of technologies, language learners are faced with unprecedented opportunities and a wide range of alternatives to engage with in their self-directed learning. However, a review of the literature indicates that studies investigating how learner autonomy is shaped and reshaped in online learning environments are under-researched (Reinders & White, 2016). Using a case study method, the primary objective of this study is to examine how a learner engaged with technology-mediated environments to meet his learning needs and goals and how his autonomy evolved in online environments. A qualitative analysis of the interview data collected at two different timescales reveals new developments in the learner’s autonomous learning. Instead of using limited online materials, the learner became a critical user of multiple online sources. Additionally, the learning conditions he was exposed to in New Zealand fostered an interdependent and social dimension in his autonomous learning. By the end of this research study, he was also found to be more capable of regulating his self-directed study. The results corroborate the argument that the notion of learner autonomy is fluid and dynamic, suggesting that apart from psychological factors of the learner, environmental factors, e.g. the guidance from the teacher and learning conditions also play a critical role in the formation of different dimensions of learner autonomy.


Author(s):  
Mostafa Khanzadi ◽  
Ali Kaveh ◽  
Mohammad Rastegar Moghaddam ◽  
Seyyed Mohammad Pourbagheri

In recent decades, the variety of building materials has grown a great deal causing the selection of suitable materials from a wide range of candidates to be complex and difficult. One of the main criteria to be considered in this area, besides reducing procurement cost, is paying attention to various aspects affecting the dimensions of sustainable development, such as increasing energy saving, applying recyclable materials and localization.This paper proposes a framework in the BIM environment - as one of the successful approaches in the AEC industry - which allows the project stakeholders to choose the most desired and optimal combination for their building components with least human interference in the selection process makes systematic choices. In order to achieve the purposes embedded in the framework phases, several methods such as ENSCBO, DEA and VIKOR have been utilized in order to evaluate and depict the selection process, this is implemented as a Revit plugin and eventually applied to a case study.


2021 ◽  
Author(s):  
◽  
Lorie A. Mastemaker

<p>On a small ridge overlooking Havelock North and parts of the Heretaunga Plains to the west, a Victorian homestead known as Duart House was rescued from neglect by a local community group in 1985. The group became known as the Duart House Society (DHS) who formed to care for its maintenance and promote it to the public for social and cultural activity; however, in managing local heritage, the DHS have done so according to their own priorities and needs. This dissertation examines a case study of an independent heritage initiative and considers the question of how we might understand the ways in which people engage and respond to heritage, and why these activities should be of interest to professionals in favour of democratising museums and heritage. There is currently no research on independent heritage activity in New Zealand and international studies have also been largely neglected. A range of historical, empirical and theoretical approaches are incorporated in this research, including interviews, observation, questionnaires, primary and secondary resources, to generate a diverse range of data reflecting the wide range of factors that influence the central question of this research. By utilising Duart House of Havelock North as a case study, in conjunction with theories of intangible heritage, history and memory, the research moves beyond the 'official' museum and heritage sector to draw attention to the exclusive nature of people's sense of the past in New Zealand. This dissertation also addresses an issue that has been under-theorised in the existing literature of museum and heritage studies, namely that of individual memory, and the importance of objects and places to keep memory alive in the face of change. The research not only provides an in-depth study of one example of local heritage, but suggests an awareness of heritage as personal opposed to collective, and something which is 'performed' in multiple layers rather than just a physical place or 'thing'. It concludes that heritage is a far more complex process between people, place and memory than the literature on the subject claims, which poses a problem for museums who want to be 'all things to all people' and one that is not easily resolved. The research proposes a new direction for museums that is less concerned with 'truth' and more comfortable with 'open-ended exploration', 'wonder' and 'imagination'. This dissertation therefore serves as a critical resource to prompt further debate about the challenge of establishing closer relationships between museums, heritage and communities.</p>


2021 ◽  
Author(s):  
◽  
Joseph Bailey

<p>Economic and technological shifts over the last half of the 20th century have seen widespread changes in the way the New Zealand rail network operates, and are continuing to lead to the eminent decline of sections within the network as priorities shift to ensure its long-term survival as a whole. The decline in rail operations to the present point has already seen railway stations, goods yards and associated industrial areas in many rural areas and some smaller centers falling into disuse, and it is inevitable that many more will follow. The aim of this research is to identify and analyze these rail facilities, both redundant and operational, within provincial New Zealand cities with the intention of establishing possible strategies for re-integrating these sites back within the surrounding urban fabric of their respective cities, while retaining links to the cultural and industrial heritage of the sites in terms of the role they played in the birth and development of provincial New Zealand. A review of relevant literature has been conducted in unison with a graphic analysis of both current and redundant rail sites in ten provincial New Zealand cities. The former railway goods yard in Oamaru was selected for the design case study as it encompasses the common issues identified throughout the graphic analysis, while also presenting a number of unique issues. In response to the initial aim of this research, the design case study for Oamaru concludes that, once redundant, these former rail facilities can be successfully re-integrated with their surrounding urban fabric, without comprimising the unique inherent cultural and industrial heritage of the site.</p>


Author(s):  
Trevor Z. Yeow ◽  
Timothy J. Sullivan ◽  
Kenneth J. Elwood

One barrier to adopting seismic loss estimation frameworks in New Zealand engineering practice is the lack of relevant fragility functions which provide probabilities of exceeding certain levels of damage (e.g. cracking of gypsum wallboards) for a given demand (e.g. interstorey drifts). This study seeks to address this need for four different building components; interior full-height steel-framed plasterboard partition walls, unbraced suspended ceilings, precast concrete cladding, and steel beam-column joints with extended bolted end-plate connections. Fragility functions were sourced from literature, and their potential for use in New Zealand is evaluated considering similarities in component detailing with local practices. Modifications to a number of fragility functions, including generalizations for easier adoption in practice, are proposed. A loss estimation case study of a 4-storey steel moment-resisting frame is performed to investigate the significance of fragility function selection. It is shown that the definition of damage states can have a noticeable influence on the assessment of incurred repair cost of individual building components. This indicates that fragility functions should be carefully selected, particularly if the performance evaluation of each individual component is of utmost importance. However, the observed difference in expected annual repair cost of the entire building was small, indicating that in cases where fragility functions are not readily applicable for use in New Zealand, other fragility functions may be used as placeholders without drastically altering the outcome of loss analysis for the entire building.


2021 ◽  
Author(s):  
◽  
Mike Taylor

<p>This research sought to establish a dialogue between the academic discipline and school subject of geography, by exploring the potential of disciplinary-conscious teaching and learning. Although there have been advocates for utilising the concept of perspectives to develop disciplinary-consciousness (Bliss, 2005; Chalmers, 2003; BOGT, 1999; Puttick, 2013) it is unclear the extent to which that pathway has been navigated in school geography policy and practices (Firth, 2011a; Maude, 2015). Broadly, the focus of my research was underpinned by a ‘Futures-3’ curriculum stance (Young & Muller, 2010), in which geography teachers and students were encouraged to engage with the nature of knowledge production in a multi-paradigmatic discipline.  The study drew upon the theoretical energy of Bernstein (1999; 2000), whose sociological analysis of the segmented structure of social science knowledge has congruence with accounts of the development of geographical thought, and therefore helps give direction to the substantive focus of the research problem. Furthermore, Bernstein’s articulation of the field of recontextualisation offers further theoretical support for how academic geographical knowledge, such as the concept perspective, is (re)imagined for school geography knowledge.  As my study is mostly focused on the field of recontextualisation, my sequential case-study design included three distinct phases of empirical inquiry: i) a document analysis of the place and role of the concept of perspectives in curriculum and assessment materials 2001-15; ii) an e-questionnaire of subject specialists; and iii) a Lesson Study inspired collaboration with two teachers and a group of senior secondary students. This latter component of my study was supported by the pedagogical frameworks of Puttick (2013), Hodson (2014) and Moje (2015).   Phase 1 and 2 analysis concluded that the concept of perspective has been recontextualised across multiple documents as a stakeholder framing, which emphasises the views of individuals, groups and organisations, rather than signalling a disciplinary-conscious approach to the subject. Evidence from the geography education specialists suggested disciplinary-consciousness had been considered too challenging for teachers and students alike and therefore was unlikely to dislodge the orthodox stakeholder framing. The lesson study collaboration showed, however, that disciplinary-consciousness is not out of the question for students or teachers, and that Puttick’s (2013) looking at and looking along conceptual framework is a productive guide for teachers who are starting to provide their students in a basic grounding of paradigms and perspectives influencing geographical thought.   The major implication of this research points towards a recontextualising field in which the social relations within it are structurally configured to make it difficult for a creative engagement with the nature of geographical knowledge to prosper. In this case study, disciplinary-consciousness has been marginalised by subject specialists who are mostly distant from the academic discourses that shape geographic knowledge production. Consequently, curriculum and assessment signalling of perspectives is surface level, and sometimes confusing. Moreover, the prevailing educational discourses that currently shape New Zealand education generate little ‘ideological space’ (Bernstein, 1996) for conversations about the variegated nature of geographical knowledge to ferment.  The study concludes with some recommendations for the wide range of actors within the current field of recontextualisation. It is suggested that a collectively aligned response across the sector is required if geography students are to be given the opportunity of exploring different ways of seeing in the construction of geographical knowledge.</p>


2018 ◽  
Vol 763 ◽  
pp. 61-71 ◽  
Author(s):  
George Charles Clifton ◽  
Gregory A. MacRae

First the Canterbury earthquake series of 2010/2012 and then the Kaikoura Earthquake of 2016 have significantly impacted the building stock in central and southern New Zealand, subjecting a wide range of buildings and building components to earthquake shaking ranging from moderate to severe. The economic and social costs of these earthquakes have been severe, but the lessons learned on how buildings and building systems designed and detailed to New Zealand provisions have performed have been invaluable. We have learned more about this from these earthquakes then from the many reconnaissance trips undertaken to overseas earthquakes over the 50 years of the New Zealand Society for Earthquake Engineering. This paper focusses on the performance of steel framed buildings in two major New Zealand cities, Christchurch and Wellington, with greatest emphasis on multi-storey buildings, but also covering light steel framed housing. It addresses such issues as the magnitude and structural impact of the earthquake series, how the various systems performed against the design expectations and briefly covers some of the research underway to quantify where there were differences between the observed performance and the expected performance.


2021 ◽  
Author(s):  
◽  
Joseph Bailey

<p>Economic and technological shifts over the last half of the 20th century have seen widespread changes in the way the New Zealand rail network operates, and are continuing to lead to the eminent decline of sections within the network as priorities shift to ensure its long-term survival as a whole. The decline in rail operations to the present point has already seen railway stations, goods yards and associated industrial areas in many rural areas and some smaller centers falling into disuse, and it is inevitable that many more will follow. The aim of this research is to identify and analyze these rail facilities, both redundant and operational, within provincial New Zealand cities with the intention of establishing possible strategies for re-integrating these sites back within the surrounding urban fabric of their respective cities, while retaining links to the cultural and industrial heritage of the sites in terms of the role they played in the birth and development of provincial New Zealand. A review of relevant literature has been conducted in unison with a graphic analysis of both current and redundant rail sites in ten provincial New Zealand cities. The former railway goods yard in Oamaru was selected for the design case study as it encompasses the common issues identified throughout the graphic analysis, while also presenting a number of unique issues. In response to the initial aim of this research, the design case study for Oamaru concludes that, once redundant, these former rail facilities can be successfully re-integrated with their surrounding urban fabric, without comprimising the unique inherent cultural and industrial heritage of the site.</p>


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