Improvement on Accessing Paper-based Construction Document and Information via Augmented Reality Facilitators/Connectors Mohsen
While the technology and tools used to design and present structural elements in building construction have advanced, construction drawings are still mainly two-dimensional (2D). Paper-based floor plans often reference other drawings to deliver design intent to construction site crews. This process sometimes results in poor design communication, since deciphering the intent from many 2D drawings, which can be out of exact context, is time consuming, confusing, and prone to human error. Poor design communication can cause quality, safety, and productivity issues in construction sites and even disastrous scenarios like building collapse. This study proposes an improvement to the process of using paper-based 2D drawings by providing simpler access to detail drawing information associated to a specific floor plan in order to decrease potential errors. To achieve this goal, the current process of viewing, accessing, and interpreting drawings in construction sites was investigated. Then a workflow was proposed to facilitate accessing detailed drawing information by overlaying 3D models of detail elements on paper-based floor plans using augmented reality (AR). Finally, to test this workflow, a case study was conducted to compare the AR-based process against the traditional paper-based drawings. The results of case study showed that an AR-based process has the potential to decrease time and errors when accessing detailed drawing information. The result also indicated that participants preferred the AR-based method over the traditional paper-based one.
A Feasibility Study of IFC-Based BIM 4D Simulation Using Commercial Systems to Support Construction Planning in the United States
Building information modeling (BIM) 4D simulation’s support in construction planning is important given the current trend in the decreasing number of experienced construction planners. However, the adoption rate of BIM 4D simulation is relatively low compared to other BIM uses. An improved BIM interoperability can help achieve more benefits of BIM use. Industry foundation classes (IFC) is an ISO-registered data standard for building and construction industry data. It plays key roles in BIM interoperability. In this paper, the authors investigated the feasibility of using IFC-based BIM in creating 4D simulations with three different commercial platforms (Navisworks, Synchro, and Navigator). Experiments were conducted in creating 4D simulations of a simple bridge model and a complex duplex apartment model. It was found that: (1) the 4D simulations were successfully created in all three platforms, therefore the feasibility was tested; (2) the IFC-based interoperability in this 4D simulation could be best achieved by using separate architecture, engineering, and construction (AEC) objects during importation; and (3) the round trip from 4D simulations back to IFC models was still missing. Future research is recommended to investigate innovative methods that improve 4D simulation using integral IFC models and enable round trip interoperability with IFC models.
From Architectural Design to Structural Analysis: A Data-Driven Approach to Study Building Information Modeling (BIM) Interoperability
Building Information Modeling (BIM) has been playing an essential role in building construction projects in recent years. It was used to automate many tasks such as cost estimation and structural analysis. However, BIM interoperability is still lacking in many fields across the architecture, engineering, and construction (AEC) domain. This paper studies the interoperability between architectural design and structural analysis. The goal is to explore BIM-based structural analysis through data transfer between different software via three types of paths: (1) direct link using native file, which is the direct link between software programs from the same provider; (2) direct link using application programming interface (API), which is the direct data transfer with a BIM platform through its APIs; and (3) indirect link, which is the indirect transfer of information through third-party software or methods/algorithms, with a particular focus on the use of industry foundation classes (IFC) data. IFC is an ISO-registered, open, and neutral data exchange standard for BIM. Although IFC was designed to be comprehensive in supporting all disciplines and phases of a building construction project, the authors found that IFC exports from architectural design software usually lack essential information elements needed for structure analysis such as loads information.