Federica Pascale, Nabil Achour, Andrew D.F. Price and Francesco Polverino
This paper aims to evaluate emergency department (ED) design space planning approaches and draw lessons for developing more resilient and integrated ED guidelines. Two key…
Abstract
Purpose
This paper aims to evaluate emergency department (ED) design space planning approaches and draw lessons for developing more resilient and integrated ED guidelines. Two key objectives have been set; these include: exploring potential factors affecting the ED performance, and investigate how ED space planning is addressed internationally through the evaluation of international case studies and design guidelines.
Design/methodology/approach
A robust research method has been adopted including comprehensive literature review in addition to 76 case studies from Italy and the USA.
Findings
Findings show that the important factors in defining ED space requirements are attendance variability, vulnerable groups and mass casualty events. The study concludes that current design guidelines and approaches need to be updated to meet with the current and future demand by taking into account design performance: effectiveness, efficiency and resilience, to avoid underestimating ED space; and that the US EDs are in a better position, than Italian EDs, to increase capacity when needed.
Originality/value
The contribution of this study is in providing a tangible “understanding” of factors influencing ED design and prepares a firm ground to develop more resilient and integrated design guidelines, able to meet current, exceptional and long-term needs of EDs. The study also shows that research can provide a valuable contribution to improve ED design which needs to feed more in practice to improve design process and guidelines.
Details
Keywords
Wafa Ghaffour, Mohammed Nabil Ouissi and Marc André Velay Dabat
The preservation of historic urban centres prevents anarchic development of the city and ensures a harmonious evolution of the urban form. It also improves the quality of life in…
Abstract
Purpose
The preservation of historic urban centres prevents anarchic development of the city and ensures a harmonious evolution of the urban form. It also improves the quality of life in the context of climate and environmental change. Morphological and geometric indicators of the urban fabric are key parameters in the formation of external microclimates. They provide a positive effect on the thermal comfort of pedestrians. The objective of this work is to study the impact of the site morphology on the external microclimate and to understand the relationship between the subjective perception and the objective quantification of the thermal environment. The result of this study has allowed us to propose solutions for the creation of a microclimate favourable to the appropriation of outdoor spaces. The authors finally propose guidelines for the design and rehabilitation of the historic site based on the establishment of links between the site's configuration, microclimatic conditions and users' perceptions.
Design/methodology/approach
Part of this study included the analysis of the microclimate of the historic “Bab El Hadid” district of the City of Tlemcen, by developing a questionnaire survey and a numerical simulation validated by measurements of the microclimate the authors made on site. To complete this task, the authors applied the Envi-met 4.1 model during the coldest month of the winter and the hottest month of the summer. Urban parameters are represented at different measurement points characterised by a variability of the sky view factor (SVF).
Findings
The results presented in terms of average expected the predicted mean vote (PMV) voting, solar access and air temperature. They show that thermal conditions are directly related to the SVF, the height/width ratio (H/L) of streets as well as the orientation of urban canyons. The points located in the streets facing North–South, present an acceptable performance. Streets shaded by trees with a canyon aspect ratio of between 1.18 and 1.70 reduce heat stress in outdoor spaces. The PMV models discussed provide information on the most appropriate locations for pedestrians. The authors have proposed urban orientations that could limit unfavourable conditions in outdoor spaces. They are useful for architects and urban planners in the design and rehabilitation of historic centres.
Originality/value
In Tlemcen, the microclimate is not taken into account in the design and rehabilitation of urban fabrics. For this specific purpose, the authors want to stress in the research the importance of safeguarding urban heritage through the renewal of the old city and the bioclimatic rehabilitation of its urban spaces.