Integrating BIM and IPD for Optimized Design of Residential Buildings: A Case Study in Peru

Over the years, the construction sector has used traditional methodologies that often fail to meet established budgets and deadlines, making it imperative to adopt collaborative methodologies such as IPD and BIM. This research evaluates the influence of these methodologies in the design stage of residential buildings, through a case study in Peru managed by an SME. The methodology is divided into three parts: first, a diagnosis of traditional management is carried out through documentary review and semi-structured interviews; second, a proposal for improvement is proposed using tools based on BIM and IPD; third, the proposal is validated through statistical analysis and a validation matrix. Nine typical management problems were identified, such as deficiencies in plans, measurements and budgets, and delays due to inadequate planning. Eight optimization tools are suggested, such as the NEC4 ECC Collaborative Contract, ECD, Revit, Navisworks, early integration of the contractor, ICE Sessions, 3D, 4D and 5D BIM models. The 3D model showed 0.48 interferences per m², the 4D model allowed monitoring the progress of the project, and the 5D model allowed a cost optimization of 4.73%. The profitability analysis showed a return on investment of S/ 3.42 per “sol” invested. The validation of the optimization was demonstrated by the Z Test. The validation matrix highlighted the NEC4 ECC Collaborative Contract and the 3D BIM Model as the most effective tools. In this way, the study contributes to closing the knowledge gap regarding the implementation of BIM and IPD to optimize the management of residential buildings.