In the UK, healthcare built environment design is guided by a series of long established design standards and guidance issued by the Department of Health.More recently, healthcare design focus has broadened to encompass new approaches, supported by large bodies of credible research evidence. It is therefore timely to rethink how healthcare design standards and guidance should be best expressed to suit 'designerly ways' of using evidence, to improve their use and effectiveness in practice. This research explored how designers use performance and prescriptive approaches during the healthcare design process.Three in-depth healthcare built environment case studies were used to explore how designers employed such approaches during the design of selected exemplar design elements. Results show that design elements in the pre and conceptual design phases significantly employed performance based approaches, and due to project-unique circumstances, prescriptive solutions were often significantly modified based on performance criteria. For design elements in the detailed and technical design phases, there was significant use of solutions based on prescriptive approaches, whilst performance-based criteria were used to evaluate design solutions. This research proposes a performance-based, specification driven healthcare design with supplementary prescriptive specifications provided for optimum healthcare environment design.Keywords: healthcare built environments; evidence; designing; performancebased specification; prescriptive specification
IntroductionHospital design has traditionally focused on efficiency, cost and clinical functionality (Gesler et al., 2004). Similar to many elements of the built environment, the healthcare design process draws on various sources of evidence including but not limited to formal education, personal and colleagues' knowledge and experience, common sense, intuitions and personal interpretations (Hamilton, 2003, Tetreault & Passini, 2003, Lawson, 2004, Martin & Guerin, 2007 as well as more formal design guidance (Lafratta, 2006, Hignett andLu, 2009) This paper presents an empirical examination, drawing on three case study projects, of how healthcare designers draw on evidence, through designerly ways, in the process of healthcare built environment design. Evidence within this study is considered as either based on experience, found within formally produced design guidance or more explicitly grounded in academic research findings, or indeed a combination of all three, creating a naturally broad and inclusive definition which enables the process of design to be explored in depth. It is hoped that in taking a practice-based approach with due recognition of designerly ways, this research can contribute to improvements within the process of healthcare design, and also provide useful insights to help develop an 'ideal balance' of prescriptive and performance specification within this specific built environment context.