Abstract
Model checking of building information models is gaining interest for academic and industrial fields. However, several limitations can be identified in the practical application of model checking processes. One of the main limitations is the unavailability of detailed guidelines describing how these checks should be developed. The research presented in this paper focuses on the development of a check flow that can be applied to any type of building project answering to three main questions, namely what to check, when to perform the check, and who should perform the check. During the research a complete guide for checking activity has been developed identifying the subjects responsible for each specific check during the process. The proposed check list has been tested using a practical case study where the checks have been applied to a real model using commercially available checking tools. The results of the process have determined the need to streamline the proposed flow through a risk management analysis that allowed the definition of two other flows, optimized for achieving prefixed purposes. The research has been developed focusing on a specific phase of the construction process that is the detailed design authorization. Nevertheless, the results can be extended at different phases providing a good support both to clients and public administrations during the validation and authorization phase, and to the designers during the development of the project as an iterative checking process. The results presented in this work can pave the way for the integration of structured and standardized checking processes improving the overall quality of the construction process. This work has been developed and intersected with the activities of the H2020 BIM4EEB project considering the need to pave the way for the creation of quality models to facilitate the development of BIM based renovation processes.
Highlights
In public works the compliance with these additional requirements is mandatory according to regulations in force, while, in private works, it is recommended in order to optimize the quality of the process
The advantages of the proposed method have shown that, by adopting the check flows, it is possible to successfully complete the detailed design phase of the construction process and to obtain the necessary authorizations from the competent administrations. This is in spite of some disadvantages, partly intrinsically linked to the model checking process, partly due to a difficult diffusion of the BIM process in the national and international market
The elaborated flow can be the basis for possible future lines of investigation of the BIM model checking process
Summary
The release of authorizations from municipalities is based on the satisfaction of minimum requirements defined by the law, regulations, and standards, etc. The appointing party, usually an “unaware actor” in the process [1] and unprepared for the use of advanced information tools, may be in difficulties by the need to perform a complete analysis of such a large and multifaceted digital model, forcing the appointing party itself to turn to third parties to carry out the activity or, in the case of private works, to completely renounce performing the analysis applying purely random model validation. It is crucial to meet the needs of the public and private appointing parties, providing a comprehensive (but not exhaustive) guideline to check and validate building information models supporting the completion of the detailed design phase in the construction process. This research developed a check flow that can be applied to any type of building project, containing the list of checks deemed essential during detailed design phase for the validation of a BIM model by public and private appointing parties and for the definition of e-permit processes by the competent administrations.
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