Abstract
Many construction projects present uncertainty in their budgets and schedules. Also, the management of time and costs is inconsistent. There are methodologies and techniques that improve the management of construction projects: Techniques such as Earned Value Management (EVM), ideal for planning, monitoring and controlling the management of time and costs during the execution of projects, and methodologies such as Building Information Modeling (BIM) recognized for improving the planning and design of construction projects. This paper proposes the integration of BIM and EVM through an OpenBIM software called COST-BIM, designed in JAVA programming language and NetBeans 8.0.1 development environment. It manages construction projects time and costs under a single interface, consisting of four modules and fifteen processes. The software is validated through a real project of social interest housing (Vivienda de Interes Social VIS), comparing the budget, schedule, EVM original indicators and EVM projections of the project versus those generated by the tool. COST-BIM manages construction projects from its planning, during its execution and until its monitoring and control turning it into a useful software for construction managers that strive to increase the performance of their projects
Highlights
Construction companies who have managed building projects know that they usually take more time and money than initially planned (Abadie et al, 2013)
As for the validation of the results generated by the software, the COST-Building Information Modeling (BIM) budget and schedule was compared against those provided by the partner building company
Afterwards, the BIM Execution Plan framework (BEP) form is issued, which records the persons in charge and the responsibilities associated to the BIM model
Summary
Construction companies who have managed building projects know that they usually take more time and money than initially planned (Abadie et al, 2013). Preparing them requires collecting large amounts of data from different professionals, who generally do not interact nor communicate efficiently among them during the design phase of project deliverables, thereby entailing incompatibilities and data leaks and reprocessing during their integration process This produces uncertainties in the quantification of resources (materials, labor and equipment) associated to the deliverables that will define the schedule and planned budget, which subsequently causes variations between the schedule, they add that the issue of budget and schedule variations is present at global level. They analyzed 975 building projects and found that only 5.4% of the projects were within budget, and 36.4% incurred in cost overruns above 50% of the planned budget These data demonstrate the impact of the variations between the schedule and the planned and executed budget on the Revista Ingeniería de Construcción Vol 33 No3 Diciembre de 2018 www.ricuc.cl project’s final cost. There are often delays which cause cost overruns, because there is no system controlling the performance of the work completed (Abadie et al, 2013)
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