This thesis examines the problems of building on Toronto’s main streets. These arterial mixed-use corridors that define much of the public face of the city are the subject of ongoing residential intensification efforts through the Official Plan policies of the City of Toronto. The form that this new development takes can either reinforce and improve existing streetscapes and housing stock, or it might –as is already happening– replace the long-established vital urban patterns of main streets with very different, less versatile, and less diverse building forms with a diminished standard of both urban and interior living space. Part I considers main streets at the urban scale, while Part II is a discussion of housing quality and architectural aims that informs a series of proposed prototypical building designs to be located on a site on Queen Street West as an example of site conditions found on main streets in a variety of locations throughout the city. To understand the urban implications of main street building, this study looks at the specific historical factors that have shaped Toronto’s main streets, and looks at why they continue to have value and have become a focus for intensification today. It revisits key episodes in Toronto’s redevelopment planning over the last four decades, particularly the St. Lawrence Neighborhood Plan, the Ataratiri Plan, and the Housing on Toronto’s Main Streets Initiative. The precedent historical research points to the need for small increments of development on main streets in order to maintain the economic, social, and visual diversity that have made them such a vital and dynamic component of the city in the past. This scale of development calls for new building types to respond to the very particular site conditions of main streets. Modern building types that are typically used in these situations are ill suited to respond to these conditions, provide a limited range of unit types, and are leading to compromises of urban and interior spatial quality when applied to these sites. The architectural discussion centers on the observation that traditional main street lot patterns, despite inherent rigidity and rationality, have nonetheless proven to be a functionally flexible urban structure that has accommodated and encouraged a remarkable diversity of uses, architectural forms, and individual interpretations over time. Comparable complexity and diversity of spatial qualities can be found in a variety of architectural design approaches, including those of Adolf Loos’ ‘Raumplan’, Rudolf Schindler’s ‘Space Architecture’, or Herman Hertzberger’s concept of ‘Polyvalent Form’. The spaces created by these architects are an architectural analogue of the dynamic, richly varied urban characteristics of Toronto’s existing main streets. Both create the opportunities for individual expression and continually varied spatial experience that better reflects the complexity of both urban and domestic life. These precedents of architectural form -imbued with qualities of multiplicity, heterogeneity and reinterpretability- propose a counterpoint to the standard of functionally rigid, spatially limited and typologically predictable buildings and living spaces currently available. The proposed building designs are intended to widen the options for dwelling within the city, while offering an update and intensification of main streets that reinforces rather than replaces desirable existing urban patterns.

This thesis examines the problems of building on Toronto’s main streets. These arterial mixed-use corridors that define much of the public face of the city are the subject of ongoing residential intensification efforts through the Official Plan policies of the City of Toronto. The form that this new development takes can either reinforce and improve existing streetscapes and housing stock, or it might –as is already happening– replace the long-established vital urban patterns of main streets with very different, less versatile, and less diverse building forms with a diminished standard of both urban and interior living space. Part I considers main streets at the urban scale, while Part II is a discussion of housing quality and architectural aims that informs a series of proposed prototypical building designs to be located on a site on Queen Street West as an example of site conditions found on main streets in a variety of locations throughout the city. To understand the urban implications of main street building, this study looks at the specific historical factors that have shaped Toronto’s main streets, and looks at why they continue to have value and have become a focus for intensification today. It revisits key episodes in Toronto’s redevelopment planning over the last four decades, particularly the St. Lawrence Neighborhood Plan, the Ataratiri Plan, and the Housing on Toronto’s Main Streets Initiative. The precedent historical research points to the need for small increments of development on main streets in order to maintain the economic, social, and visual diversity that have made them such a vital and dynamic component of the city in the past. This scale of development calls for new building types to respond to the very particular site conditions of main streets. Modern building types that are typically used in these situations are ill suited to respond to these conditions, provide a limited range of unit types, and are leading to compromises of urban and interior spatial quality when applied to these sites. The architectural discussion centers on the observation that traditional main street lot patterns, despite inherent rigidity and rationality, have nonetheless proven to be a functionally flexible urban structure that has accommodated and encouraged a remarkable diversity of uses, architectural forms, and individual interpretations over time. Comparable complexity and diversity of spatial qualities can be found in a variety of architectural design approaches, including those of Adolf Loos’ ‘Raumplan’, Rudolf Schindler’s ‘Space Architecture’, or Herman Hertzberger’s concept of ‘Polyvalent Form’. The spaces created by these architects are an architectural analogue of the dynamic, richly varied urban characteristics of Toronto’s existing main streets. Both create the opportunities for individual expression and continually varied spatial experience that better reflects the complexity of both urban and domestic life. These precedents of architectural form -imbued with qualities of multiplicity, heterogeneity and reinterpretability- propose a counterpoint to the standard of functionally rigid, spatially limited and typologically predictable buildings and living spaces currently available. The proposed building designs are intended to widen the options for dwelling within the city, while offering an update and intensification of main streets that reinforces rather than replaces desirable existing urban patterns.

The goal of this thesis is to investigate and propose housing that increases density while offering a better quality of life for citizens inhabiting Toronto’s Avenues. This thesis compares three different building prototypes, all of varying scales and typological characteristics. The viability of each prototype is discussed with regards to the current economic and regulatory conditions within the city, as well as the varying quality of life that each prototype creates.

The goal of this thesis is to investigate and propose housing that increases density while offering a better quality of life for citizens inhabiting Toronto’s Avenues. This thesis compares three different building prototypes, all of varying scales and typological characteristics. The viability of each prototype is discussed with regards to the current economic and regulatory conditions within the city, as well as the varying quality of life that each prototype creates.

Kyoto University (京都大学) / 0048 / 新制・課程博士 / 博士(工学) / 甲第17154号 / 工博第3644号 / 新制||工||1553(附属図書館) / 29893 / 京都大学大学院工学研究科建築学専攻 / (主査）教授 中島 正愛, 教授 吹田 啓一郎, 教授 金子 佳生 / 学位規則第4条第1項該当

This thesis envisions a new way of living in the city of Toronto. It is a vision that evolves not from the ideologies on which Toronto was founded, set out over 100 years ago when all multi-family dwellings were called tenements and tenements were considered, among other things, immoral. Instead, it is a vision founded on a city that has seen immense change over the last century, and faces an even greater rate of change over the next. Our city prides itself on its cultural and social diversity, yet, architecturally, we still struggle to adapt within a fabric of single-family homes. The Dutch provide an edifying example of an architecture of daily life, embodied by their attitude toward issues of privacy, toward traffic, toward work and play. Based on a case study of housing in the Netherlands, a country that has successfully and creatively adapted to the demands of housing in a climate of rapid immigration and a diversifying population, this thesis proposes new, high density urban housing typologies for the city of Toronto. This new vision for the city serves not only to add the necessary density to our existing neighbourhoods, but to foster a strong community life and to provoke new ideas about urban living.

This thesis envisions a new way of living in the city of Toronto. It is a vision that evolves not from the ideologies on which Toronto was founded, set out over 100 years ago when all multi-family dwellings were called tenements and tenements were considered, among other things, immoral. Instead, it is a vision founded on a city that has seen immense change over the last century, and faces an even greater rate of change over the next. Our city prides itself on its cultural and social diversity, yet, architecturally, we still struggle to adapt within a fabric of single-family homes. The Dutch provide an edifying example of an architecture of daily life, embodied by their attitude toward issues of privacy, toward traffic, toward work and play. Based on a case study of housing in the Netherlands, a country that has successfully and creatively adapted to the demands of housing in a climate of rapid immigration and a diversifying population, this thesis proposes new, high density urban housing typologies for the city of Toronto. This new vision for the city serves not only to add the necessary density to our existing neighbourhoods, but to foster a strong community life and to provoke new ideas about urban living.

In this study, the seismic fragility assessment of low-rise and mid-rise reinforced concrete frame buildings which constitute approximately 75 % of the total building stock in Turkey is investigated to quantify the earthquake risk. The inventory used in this study is selected from D&uuml / zce damage database which was compiled after the devastating 1999 earthquakes in the Marmara region. These buildings are not designed according to the current code regulations and the supervision in the construction phase is not adequate. The building database is divided into sub-classes according to the height and absence of infilled walls. Each building in the database is represented by an equivalent single degree of freedom system with three structural parameters: period, strength, and post-elastic stiffness ratio. The ground motion records are selected from different parts of the world covering a wide range of characteristics. The capacity of the structure is represented for each sub-class by the limit states. Hence, a set of fragility curves for low- and mid-rise reinforced concrete structures are developed by making use of the building characteristics in the database. The generated fragility curve set is referred as &ldquo / reference&rdquo / since it forms the basis of a parametric study. A parametric study is conducted to examine the influence of post-elastic stiffness ratio, simulation and sampling techniques, sample size, limit state definition and degrading behavior on the final fragility curves. Estimated damage distribution after two consecutive major earthquakes is compared with the actual field data in order to investigate the validity of the generated fragility curves.

SEISMIC STRENGTHENING OF A MID-RISE REINFORCED CONCRETE FRAME USING CFRPs: AN APPLICATION FROM REAL LIFE Tan, Mustafa T&uuml / mer M.S., Department Of Civil Engineering Supervisor: Prof. Dr. G&uuml / ney &Ouml / zcebe Co-Supervisor: Assoc. Prof. Dr. BariS Binici May 2009, 162 pages FRP retrofitting allows the utilization of brick infill walls as lateral load resisting elements. This practical retrofit scheme is a strong alternative to strengthen low to mid-rise deficient reinforced concrete (RC) structures in Turkey. The advantages of the FRP applications, to name a few, are the speed of construction and elimination of the need for building evacuation during construction. In this retrofit scheme, infill walls are adopted to the existing frame system by using FRP tension ties anchored the boundary frame using FRP dowels. Results of experiments have previously shown that FRP strengthened infill walls can enhance lateral load carrying capacity and reduce damage by limiting interstory drift deformations. In previous, analytical studies, a detailed mathematical model and a simplified version of the model for compression struts and tension ties was proposed and verified by comparing model estimations with test results. In this study, an existing 9-storey deficient RC building located in Antakya was chosen to design and apply a hybrid strengthening scheme with FRPs and reduced number of shear walls. Linear elastic analysis procedure was utilized (force based assessment technique) along with the rules of Mode Superposition Method for the reftrofit design. FRP retrofit scheme was employed using the simplified model and design was conducted such that life safety performance criterion is satisfied employing elastic spectrum with 10% probability of exceedance in 50 years according to the Turkish Earthquake Code 2007. Further analytical studies are performed by using Modal Pushover and Nonlinear Time-History Analyses. At the end of these nonlinear analyses, performance check is performed according to Turkish Earthquake Code 2007, using the strains resulting from the sum of yield and plastic rotations at demand in the critical sections. CFRP retrofitting works started at October 2008 and finished at December 2008 for the building mentioned in this study. Eccentric reinforced concrete shearwall installation is still being undertaken. All construction business is carried out without evacuation of the building occupants. This project is one of the first examples of its kind in Turkey. Keywords: CFRP, Carbon Fiber Reinforced Polymers, Masonry Infill Walls, Reinforced Concrete Infill Walls, Mid-Rise Deficient Structures, Turkish Earthquake Code 2007, Modal Pushover Analysis, Nonlinear Time History Analysis, Linear Elastic Building Assessment

No description available.