Proposal for an optimised method for evaluating the performance in use of innovative construction systems

Abstract This paper discusses the performance in use of innovative construction systems (ICSs), approved by Technical Assessment Institutions (TAIs) and the National Technical Assessment System (SiNAT). The objective was to analyse the results of Post-Occupancy Evaluations (POEs) in Social Housing units (SHUs) built with PVC-concrete and Light Wood Systems. The analysis was based on an optimisation proposal and on evaluation criteria established to identify the systematic failures of a set of tools: design, construction works, use, operation and maintenance, maintainability and technical assistance (FINANCIADORA…, 2012). In both cases, airtightness was identified as the performance factor that most required intervention in the HISs. Joint cracks and frame problems were found not to be derived from self-supporting seal deformations, which is a positive aspect in the analysis of the structural safety performance factor. The results show that, although the structural safety factor is satisfactory, there is need for maintenance by users and for technical assistance by the manufacturer and/or the construction company, as in the case of the Concrete-PVC system. The results showed that the proposed optimised method is capable of identifying systematic failures in the ICSs, allowing for recommendations to be made to the technical assessment institutions as for which items should be prioritised in future reevaluation of the construction systems.