Classical Temples and Industrial Stores: Survey Analysis of Historic Unreinforced Masonry (URM) Precincts to Inform Urban Seismic Risk Mitigation

ABSTRACT

Oamaru, Winton, and Invercargill feature some of New Zealand’s most intact heritage precincts that are confronted by ongoing threats of seismic activity. The 2010/2011 Canterbury earthquake sequence and Canterbury Earthquakes Royal Commission of 2012, identified a nationwide trend through the proportion of deaths that occurred in public places as a result of the prevalent historic unreinforced masonry (URM) building stock. The reported study was undertaken to address urban safety and seismic risk mitigation through the lens of heritage conservation. The range of classically designed public buildings and industrial warehouses in the South Island of New Zealand were often produced by singular architectural practices, using locally sourced materials and construction techniques. It is vital to incorporate an examination of unique architectural qualities within urban seismic risk assessment and mitigation. Historic urban layout, architectural deployment of masonry, and extent of retrofits were recorded through onsite visual surveys via Geographical Information Systems and three-dimensional representation technologies. Extending the scope of information collected for engineering seismic risk assessment by focusing on the historical architectural context informs the selection of future mitigation measures. Oamaru, Winton, and Invercargill present intriguing case studies for multidisciplinary analysis, prior to testing urban-scale survey approaches within comparable historic centers across New Zealand.     

Gerald Ford,the Mayaguez Incident,and the Post-Imperial Presidency

In 1975 Gerald Ford became the first President bound by the War Powers Resolution. Enacted in 1973, members of Congress, still fuming over the revelations crystallized by the Pentagon Papers that the Gulf of Tonkin Resolution was a sham, sought to prevent future Presidents from starting future Vietnam Wars. Though Ford voted against the measure twice as a Congressman, as President he respected the law and Congress enforcing it. This article explores Ford's efforts and actions as he complied with the law. Ford's attitude and acquiescence reflected his efforts he heal the nation.     

Feeding the Mountains: Sacred Landscapes,Mountain Worship,and Sacrifice in the Maya and Inca Worlds

Three texts reviewed here address the linkages between religion and mountainous landscapes in the Maya and Inca realms. Bassie-Sweet provides a thorough analysis of the Maya mythologies of creation and situates its players and concepts within the real world. Besom thoughtfully tackles the place of mountains and child sacrifice within the Andes with a focus on the late prehispanic Inca. Reinhard and Constanza offer a detailed and richly illustrated case study of state-sponsored child sacrifice on a mountaintop in the south of the Inca Empire. Taken together, these somewhat disparate books produce several fascinating parallels in the sacred geographies of mountains and the offerings made to them.     

Experimental Evaluation of Seismically and Non-Seismically Detailed External RC Beam-Column Joints

An experimental investigation was undertaken to study the seismic performance of external reinforced concrete (RC) beam-column joints having representative details for mid-rise RC frame buildings in developing countries such as Iran that were designed and constructed prior to the 1970s. Three half-scale external RC beam-column joints were tested by applying lateral cyclic loading of increasing amplitudes. Tested specimens were comprised of one unit having seismic reinforcement detailing in accordance with the seismic requirements of ACI 318-11, and two units having non-seismic reinforcement detailing in accordance with the 1970s construction practice in many developing countries, such as Iran. Two typical defects were considered for the non-seismic units, being the absence of transverse steel hoops and insufficient bond capacity of beam bottom reinforcing bars in the joint region. Test results indicated that the non-seismically detailed specimens had a high rate of strength and stiffness degradation when compared to the seismically detailed specimen, which was attributed primarily to the joint shear failure or bond failure of the beam bottom bars. The non-seismically detailed specimens also showed a 30% reduction in both average strength and ductility and a 60% loss of energy dissipation capacity in comparison to the seismically detailed specimen.     

Vulnerability Assessment of Unreinforced Masonry Churches Following the 2010–2011 Canterbury Earthquake Sequence

The 2010–2011 Canterbury, New Zealand earthquake sequence caused extensive damage to unreinforced masonry churches. A sample of 80 affected buildings was analysed and their performance statistically interpreted. Structural behaviour is described in terms of mechanisms affecting the so-called macro-elements, and damage probability matrices are computed. Regression models correlating mean damage level against macroseismic intensity are also developed for all observed mechanisms, improving the initial simple-linear formulations through use of multiple-linear regressions accounting for vulnerability modifiers, whose influence is evaluated via statistical procedures. Results presented herein will support the future development of predictive tools for decision-makers, also contributing to seismic vulnerability mitigation at a territorial scale.     

George Weekes: Rogue Missionary to New England Indians, 1731–1755

During the mid‐1700s, an uneducated layman named George Weekes began preaching to Native Americans in the town of Harwich, Massachusetts. Weekes’ missionary activity triggered a passionate response from Nathaniel Stone, the local minister, and inaugurated a debate regarding ministerial qualifications within the community. Scholars who study English missionary activity in colonial New England tend to focus upon the careers of trained clergy, such as John Eliot or Josiah Cotton. Other individuals, who possessed questionable moral character and little education, also preached to New England Indians, however. In this instance, the career of George Weekes, a rogue missionary, reveals that contact with Native Americans could shape ecclesiastical life in colonial Massachusetts. It also suggests that Native Americans encountered popular, as well as elite, English religious culture when they interacted with English missionaries in early New England.     

THE DYNAMICS OF SUBCENTER FORMATION: MIDTOWN MANHATTAN, 1861–1906

Midtown Manhattan is the largest business district in the country. Yet only a few miles to the south is another district centered at Wall Street. This paper aims to investigate when and why midtown emerged as a separate business district. We have created a new data set from historical New York City directories that provide the employment location, residence, and job type for several thousand residents in the late‐19th and early‐20th centuries. We supplement this data with additional records from historical business directories. The evidence suggests that early midtown firms appeared there in order to be closer to local residential customers who had been moving north on the island throughout the 19th century. Once several industries appeared in midtown, it triggered a spatial equilibrium readjustment in the 1880s, which then promoted the rise of skyscrapers in midtown around the turn of the 20th century. This process occurred several years before the opening of Grand Central Station in 1913.     

Jazz and the Great Samba Debate,and Vice Versa

This paper will argue that jazz emerges as samba’s kindred foil in Brazilian popular music discourse of the 1940s and 1950s. Eager to underscore “blood” ties between idealized samba do morro and early blues and jazz, contributors to journals such as Diretrizes and Revista da Música Popular nonetheless tended to equate postwar bebop and big band with the menacing venality of the US music industry and the “vulgar” fandom to which it was associated. It was amidst such critical ambivalence toward jazz that bossa nova arrived on the scene, acutely vulnerable to accusations not just of appropriation but also servile imitation and therefore second-hand “decadence.”     

Neighbourhood play on the endangered list: examining patterns in children's local activity and mobility using GPS monitoring and qualitative GIS

Children's time and freedom for independent neighbourhood activity is severely declining, which may be adversely impacting their healthy development. This study integrates GPS activity monitoring and environmental analysis in a geographic information system with activity diaries, annotated maps, surveys, and map-enhanced interviews to conduct a deep pattern analysis of children's habitual neighbourhood behaviour (n?=?23; aged 9–13 years) from each an urban and suburban school neighbourhood within London, Canada. Patterns in children's primary activities and settings, independent mobility (IM) levels, and perception and use of neighbourhood affordances are examined. Participants note a diverse range of local independent destinations, but habitually spend little time playing outdoors in neighbourhoods. Local activity related to free time available, perception of activity affordances, and license to travel independently. Social and environmental conditions of children's micro-neighbourhoods influenced independent destinations and domains. Neighbourhood planning should promote diversity of activity affordances and address conditions that support increased IM for youth.