الفهرس 
Urban densificationOnly 14 pages are availabe for public view
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Abstract
According to the 2019 UN-HABITAT Report, 65 percent of the world’s lands will become urban in 2030. In this respect, vertical growth is believed to be a sustainable concept that aims to counteract urban sprawl by compacting the population in limited areas with maximum land utilization. This research claims that vertical densification might be environmentally suitable for the growth of limited extension cities; thus, this research aims to formulate a set of practical guidelines and recommendations that can be applied in limited extension cities such as Alexandria.Through a conceptual study, the different definitions of “vertical densification” are explained, and general design consideration of vertical densification in building, block and neighborhood scale are illustrated. Moreover, the sustainability factors of environmental, economic, and social are discussed as a guiding framework in studying the impact of vertical densification. After that, by examining the linkage between different dimensions of sustainability and design aspects of a tall building, the assessment indicators will be proposed to constitute a framework for assessing the effectiveness of implementing vertical densification in limited extension cities. By these assessment indicators, the three international examples are analyzed to know how to apply the concept of vertical densification in different cities, and to pinpoint the lessons learned to be helpful in guiding future urban growth.hrough an analytical study, the impact of vertical densification on the environmental aspect is tested by environmental simulations on building height extension scenarios in several residential neighborhoods in Alexandria, such as Mustafa Kamel housing, Smouha Co-op complex, and Bashayer El-Kheir3 housing. This study investigated the effect of building height on microclimate as air temperature, and wind speed, and on outdoor thermal comfort as physiological equivalent temperature (PET) during the daytime on a typical summer day in Alexandria, Egypt after validating these results by on-site measurements.In the three neighborhoods, the current situations are screened against the environmental assessment indicators of tall buildings to validate their performance. Different types of densification methods are used, where the proposed scenarios in two of neighborhoods are as infill densification methods (by adding extra heights with the same urban design), the other one is as redevelopment method (by suggesting scenarios with extra heights, open spaces, and spaces between building) according to the implementation plan that contains the UN-Habitat principles of a sustainable neighborhood, and the environmental indicators.he results explained how the vertical densification could have a positive environmental effect on different neighborhoods, or at least it does not have a negative impact on the environment. The findings of this research might inspire change in new communities’ planning policies or guide the manner of growth for limited extension cities after considering the social and economic aspects.