Margins Leading to Over-Capacity

Jones, D. A.; Eckert, C. M. and Gericke, K. (2018). Margins Leading to Over-Capacity. In: DS92: Proceedings of the DESIGN 2018 15th International Design Conference (Marjanović, D.; Štorga, M.; Škec, S.; Bojčetić, N. and Pavković, N. eds.), The Design Society, pp. 781–792.



This paper categorises and describes the design stages, stakeholders and decision processes of an overcapacity boiler upgrade that came about from the excessive use of design margins. Using a hospital case study, the reason behind the overcapacity and excessive margins is explored using semi-structured interviews, document analysis and process modelling. Design margins arise from a lack of systemic thinking during the design and installation phases. It is likely that margins are added as a matter of habit
with no real thought to their applicability, calling into question the design process.

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