Design quality indicator
The Design Quality Indicator (DQI) is a toolkit to measure, evaluate and improve the design quality of buildings.
Development of DQI was started by the Construction Industry Council (CIC) in 1999[1]. It was initiated in response to the success of Key Performance Indicators devised for assessing construction process issues such as timely completion, financial control and safety on site by the construction industry's Movement for Innovation (M4I). The aim of the DQI system was to ensure that the M4I's indicators of construction process were balanced by an assessment of the building as a product[2]. The Science Policy Research Unit at the University of Sussex was commissioned to develop the indicator tool, which was launched as an online resource on 1 October 2003.[3] In 2004 the DQI received recognition from the British Institute of Facilities Management for the role of involving users in the design process.[4] The DQI tool was made available to users in the United States in 2006, and an online American version was launched on 20 October 2008.
Unlike the Housing Quality Indicator (HQI) system devised for the UK's Department for the Environment, Transport and the Regions (DETR) by the consultancy DEGW and published on open access in February 1999[5], the DQI system instead could be used only by approved facilitators. The criteria and the method of assessment, which though unacknowledged is a simple form of multi-attribute utility analysis, remained unaccessible to design teams and their clients unless they employed a facilitator licensed to use it. Guidance on using the HQI system can be found on the government website[6]. The DQI version for hospitals is also on open access on the national archive[7].
Conceptual framework
DQI applies a structured approach to assess design quality based on the model by the architect Vitruvius, the Roman author of the earliest surviving theoretical treatise on building in Western culture, who described design in terms of utilitas, firmitas and venustas, often translated as commodity, firmness and delight.[8] DQI uses a modern-day interpretation of these terms as:
- Functionality (utilitas) – the arrangement, quality and interrelationship of spaces and how the building is designed to be useful to all.
- Build Quality (firmitas) – the engineering performance of the building, which includes structural stability and the integration, safety and robustness of the systems, finishes and fittings.
- Impact (venustas) – the building’s ability to create a sense of place and have a positive effect on the local community and environment.
Methodology
DQI is completed by a range of stakeholders in the briefing and design stages of a building project, or on a completed building. Stakeholders who participate include:
- Building users (or potential users)
- Building clients
- Facilities managers (or future facilities managers)
- Architects
- Structural and building services engineers
- Quantity surveyors (Cost engineer)
- Project managers
DQI is applied in a facilitated workshop that is led by a certified DQI facilitator.
Models and related approaches
There are three models of design quality indicator:
- DQI which is applicable to all building types[9]
- DQI for schools which is applicable to school buildings.[10] This model of DQI is being used on all current school projects in the UK[11] and forms part of the Department for Children, Schools and Families 'Minimum Design Standard' for new school buildings.[12]
- DQI for health buildings which was released in beta format in June 2012 on the DQI website
In the United States
Formed in 2006, DQI USA[13] is the only company that is authorized to distribute the DQI tool in North America. New York City's Department of Design and Construction has adopted the DQI tool as a mandatory step in the procurement of city-owned buildings such as police stations, libraries, firehouses, museums and clinics.[14] The DQI has also been used to investigate the relation between building design, user satisfaction, and property financial and marketing performance in North America hotels.[15]
DQI is a web-based assessment tool that helps define and evaluate design quality at all key stages in the building procurement process. Through a proprietary algorithm, the tool converts individual subjective perceptions into objective measurable results. Clients, designers and building stakeholders rate aspects of a project on a simple six-point scale by completing a short questionnaire. The quantification of these "design intangibles" is a unique feature to DQI. The spider diagram is the signature output of DQI. The “chunks” missing from the pie represent deficiencies in the building.
References
- ^ Page 6, Spencer, N. and Winch, G. (2002). How Buildings add value for clients, London: Thomas Telford. ISBN 0-7277-3128-9
- ^ Macmillan, S. (2004) Preface to Designing Better Buildings: quality and value in the built environment, London: Spon Press. ISBN 0-415-31525-5
- ^ Construction Industry Council. DQI Online – How well is your building designed? 1 October 2003
- ^ The Structural Engineer DQI online service gets recognition from BIFM – The Structural Engineer 2 November 2004
- ^ Wheeler, P. (2004) 'Housing quality indicators in practice' in Macmillan, S. (2004) Designing Better Buildings: quality and value in the built environment, London: Spon Press. ISBN 0-415-31525-5
- ^ https://www.gov.uk/guidance/housing-quality-indicators
- ^ http://webarchive.nationalarchives.gov.uk/20130124042007/http://www.dh.gov.uk/prod_consum_dh/groups/dh_digitalassets/@dh/@en/documents/digitalasset/dh_082085.pdf
- ^ Gann et al. (2003), Design Quality Indicator as a tool for thinking: Building Research and Information, London: Spon Press. doi:10.1080/0961321032000107564
- ^ Design Quality Indicator
- ^ Schools version of DQI
- ^ Construction Industry Council. DQI for Schools Launched 8 December 2005
- ^ Commission for Architecture and the Built Environment. Minimum Design Standards Launched May 2009
- ^ "DQI USA: About Us: Company".
- ^ DQI USA, LLC clients
- ^ Zemke, D., Pullman, M., (2008), Design Assessing the value of good design in hotels: Building Research and Information, London: Spon Press. doi:10.1080/09613210802380993
Other references
- Whyte, J and Gann, D (2003), Design Quality Indicators: work in progress: Building Research and Information, London: Spon Press. doi:10.1080/0961321032000107537
- Markus, T. (2003), Lessons from the Design Quality Indicator: Building Research and Information, London: Spon Press. doi:10.1080/0961321032000088016
- Thomson at al. (2003), Managing value and quality in design: Building Research and Information, London: Spon Press. doi:10.1080/0961321032000087981
- Prasad, S. (2004) 'Inclusive maps', in Designing Better Buildings: quality and value in the built environment edited by Macmillan, S. London: Spon Press ISBN 0-415-31525-5
- Dickson, M. (2004) 'Achieving quality in building design by intention', in Designing Better Buildings: quality and value in the built environment edited by Macmillan, S. London: Spon Press ISBN 0-415-31525-5
- Whyte, J Gann, D and Salter, A (2004) 'Building indicators of design quality', in Designing Better Buildings: quality and value in the built environment edited by Macmillan, S. London: Spon Press ISBN 0-415-31525-5
- Prasad, S. (2004), Clarifying intentions: the design quality indicator: Building Research and Information, London: Spon Press. doi:10.1080/0961321042000312376
- Cole, R. (2005), Building environmental assessment methods: redefining intentions and roles: Building Research and Information, London: Spon Press. doi:10.1080/09613210500219063
- Kaatz, E., Root, D. and Bowen, P (2005), Broadening project participation through a modified building sustainability assessment: Building Research & Information, London: Spon Press. doi:10.1080/09613210500219113
- Commission for Architecture and the Built Environment (2009), Case study: International Digital Laboratory, University of Warwick, Coventry
- Commission for Architecture and the Built Environment (2009), Case study: Maples Respite Centre, Harlow, Essex
- Commission for Architecture and the Built Environment (2009), Case study: St Nicholas Church of England Primary School, Essex
- Commission for Architecture and the Built Environment (2009), Case study: British Library Centre for Conservation, London
- Commission for Architecture and the Built Environment (2009), Case study: Frederick Bremer School, Waltham Forest London