This dissertation investigates cabdriving as a form of spatial work, involved in the production and reproduction of social space through three interrelated products: physical movement from place to place; the experience of movement, of connection made between places; and the articulation of these places, movements, and experiences with visions of society and the social. The particular forms of knowledge involved in this work, and the politics in which taxicabs are entangled, are explored through fieldwork conducted in two very different cities: Mexico City and San Francisco, California. The political context of cabdriving knowledge changes as new technologies are introduced into the cab to reframe the relationship between the interior of the cab (where passengers and drivers interact) and the exteriors (urban and informational spaces) through which it passes. In Mexico City, interviews with libre, base, and sitio cabdrivers about their knowledge and work strategies revealed three aspects of cabdriving as a rhythm analytical practice: 1) the points of confluence, i.e., the spatial pattern or method by which drivers link up with passengers; 2) the temporal and monetary patterns of constraint the occupation puts on drivers; and 3) the sense of the city which emerges, as this is described by drivers. Each form of taxicab has different patterns of movement, and different spatial and technological means of establishing contact with customers, which results in differing experiences and strategies elaborated by drivers. In San Francisco, interviews were conducted with taxi, limousine, and "ridesharing" drivers on the impact of smartphone-enabled "e-hailing" technology. The term allegorithm (the productive co-deployment of a socially relevant allegorical script and a software-mediated algorithm) is borrowed from gaming studies to describe how interfaces reframe the cab-riding experience. Of particular interest is the emergence of "ridesharing," or the overcab (a cab-riding experience which is superior to the experience of riding in a cab). The effectiveness of the overcab’s reframing project depends on the acceptance and performance by participants of the "overcab" narrative. There are indications that the transcendence of the overcab is fragile, and that cracks are developing in the experiences of both drivers and passengers, due to continuing tensions which the overcab has failed to resolve, or which have been introduced as part of its regulating mechanism.

Infrastructure continues to perpetuate the effects of splintering urbanism in South African cities. Where apartheid planning policies such as the group areas act used infrastructure as a mechanism of social organisation, this design dissertation proposes using architecture as social infrastructure to transcend these sociotechnical divides. The concept of the sociotechnical denotes the synergy of a city's infrastructural systems and its social life. In this design dissertation this idea is explored at various scales: at the urban level, through a development strategy that spatialises unsafe public open land; at the architectural scale, through surface articulation and interfacing with urban infrastructure; and at the technical level, through building performance analysis and technical design development in support of architectural goals. The project uses a distributed programme that stretches across communities in order to socialise the existing urban infrastructure of a pedestrian bridge. By leveraging the social significance of a local football club, the project proposes a social programme around the idea of a football clubhouse as a programmatic anchor. In reacting to urban infrastructure, the idea of imageability and presence are important considerations. These concepts enable youth to positively engage with the architecture, and allows the building to convey its purpose and programmatic intent, thereby creating a strong social interface with its users. Sociotechnical architecture is considered as an urban armature that socialises and spatialises urban infrastructure. The architecture therefore seeks the minimal amount of fixity to support a variety of flexible events surrounding sports and recreation activities. This is achieved through a selection of robust materials used in horizontal surfaces of social purpose, and the combination of structure, materiality and geometry to create a series of vertical surfaces of social presence and architectural imageability. The result is a strategic arrangement of architectural interventions deployed across a large urban scheme. By distributing the architecture across urban infrastructure, the project connects two communities and presents an architectural response to splintering urbanism.

This dissertation analyses how district heating systems in the Stockholm region have evolved and developed during the period 1978-2012. The thesis comprises four papers analyzing how district heating has been handled in municipal and regional planning. The examination explores how actors have worked together to create regional, interconnected district heating systems with economic, technological and environmental benefits. An investigation is undertaken on the effects of liberalization (and the subsequent commercialization of the district heating market) on the planning and cooperation of these systems. The impact on the present and future district heating market is also discussed. The dissertation shows that energy companies cooperated on a regional level to create interconnected regional systems. Through openness, the capacity to make high-level decisions and municipal legitimacy, the regional strategies could be implemented at the municipal level. This can be considered a form of regional planning from below that developed through the initiative of the municipalities. The regional energy planning authority Stoseb could therefore succeed where other regional planning authorities in the Stockholm region have previous failed, to gather and unite the municipalities into a regional force. This cooperation changed around the time of the liberalization of the energy market in 1996, which led to sales of several municipal energy companies and a subsequent concentration of ownership in the region. The organizational distance between energy companies and municipalities has increased and affected the communication between them. Regional cooperation could not be maintained and this has meant that opportunities and tools to implement energy strategies today are weaker than earlier. This is a case of ‘regional splintering’. The liberalization of the energy market thus had a major impact on the district heating sector. / Denna sammanläggningsavhandling analyserar hur fjärrvärmesystemen iStockholmsregionen vuxit och förändrats, mellan 1978 och 2012. Avhandlingen består av fyra artiklar som analyserar hur fjärrvärme hanterats i kommunal och regional planering, hur aktörer samarbetat för att skapa regionala, sammankopplade fjärrvärmesystem med ekonomiska, tekniska och miljömässiga vinster som följd, hur elavregleringen, och den påföljande kommersialiseringen av fjärrvärmemarknaden, påverkade planering och samverkan kring dessa system, samt fjärrvärmemarknadens nuläge och framtid. Avhandlingen visar att energibolagen samarbetat på regional nivå för att skapa sammanhängande regionala system, genom öppet samarbete och att man tack vare hög beslutskompetens kunnat implementera de regionala strategierna på kommunal nivå. Det var en form av regional planering underifrån, då initiativet kom från kommunerna och samarbetsorganet lyckades med vad regionala planorgan haft svårt att genomföra under flertalet decennier i Stockholmsregion, nämligen att samla och ena kommunerna kring strategier som implementerats. Detta samarbete förändrades vid tiden runt liberaliseringen av energimarknaden, som genomfördes 1996, vilket ledde till försäljning av flertalet kommunala energibolag och en efterföljande koncentration av ägandeskapet i regionen. Det organisatoriska avståndet mellan energibolag och kommun har därmed blivit längre och påverkat kommunikationen dem emellan. Det regionala samarbetet kunde därmed inte fortsätta som tidigare och detta gör att möjligheterna och verktyg att implementera regionala energistrategier idag är svaga. Detta var ett fall av ”regional splintering”. Liberaliseringen av energimarknaden hade således stor påverkan påfjärrvärmesektorn.