The Building Information Modelling (BIM) methodology emerges as a concept with potential to reduce the fragmentation of the working mode in the construction industry, bringing a comprehensive ...integration perspective, reduced risk and making it possible to study the entire life cycle of an enterprise using a virtual and centralized information model. The selected case study considered in the research, supports the demonstration of the main benefits in using the methodology and software associated in the design and construction of a building. In a complete project, various disciplines are normally involved, including architecture, structure, water supply and drainage systems, electrical installation and excavation works. Other related task are also normally elaborated over the project information, namely, formwork of the structural elements, quantity-take-off of materials and planning the construction process. Concerning a study case, all these activities were supported on the virtual model generated with all the required disciplines, and complemented with the additional required actions. The objective of the work is to demonstrate the multivalences of the innovative methodology when applied on the developments and coordination of projects in construction. The present study also promotes the use of BIM-based tools within the integration and collaboration within a project team. The study contributes positively to the dissemination of the innovative methodology in the construction sector namely in manage and coordinate a BIM multi-project.
The results of quantity take-off (QTO) based on building information modeling (BIM) technology rely heavily on the geometry and semantics of 3D objects that may vary among BIM model creation methods. ...Furthermore, conventional BIM models do not contain all the required information for automatic QTO and the results do not follow the descriptive rules in the standard method of measurement (SMM). This paper presents a new knowledge model-based framework that incorporates the semantic information and SMM rules in BIM for automatic code-compliant QTO. It begins with domain knowledge modeling, taking into consideration QTO-related information, semantic QTO entities and relationships, and SMM logic formulation. Subsequently, linguistic-based approaches are developed to automatically audit the BIM model integrity for QTO purposes, with QTO algorithms developed and used in a case study for demonstration. The results indicate that the proposed new framework automatically identifies the semantic errors in BIM models and obtains code-compliant quantities.
•Established a semantic data model for BIM-based QTO.•Formulated the SMM descriptive rules to support automatic and accurate QTO.•Developed a linguistic-based approach to semantic auditing for QTO purposes.•Developed new algorithms for automatic measurement of modeled and unmodeled elements.•Verified the algorithms with >99% compliance with SMM in different scenarios.
Interior work is the last phase of a building project before it can be habitable. An important element of interior work is; 1. Function 2. success 3. Elements of Identity, branding, company ...priorities, and actualization. The need for office space that meet the requirements continues to increase discussing the use of materials to meet no 3 increasingly limited and constantly updated. Office Fit-Out work is directly related to the company's image and the productivity of its employees makes the budget for its construction so often in a large proportion. Like other construction work, a suitable work life cycle exiting the office will go through the design process, making Bill Of Quantity until the construction phase will go through the Quantity Take-Off process. Traditional quantity take-off takes time, low accuracy and create miscalculation, automatic take-off using BIM base Quantity take-off is a solution to help prepare cost estimation. Previous research found that a traditional take-off (manual take off) process took five times longer than the BIM Quantity Take-Off did. The quantity take-off for fit-out offices work has obstacles because the model for the Fit-out office building work has not been standardized. This study uses the Relative Important Index (RII) statistical tool to find the main factor that influences the BIM process of Quantity take-off with the results of the 10 sub factors that most influence the BIM Quantity take-off process.
•A BIM and knowledge graph-based framework for automatic model auditing and QTO.•A data model and mechanisms to obtain graph representations and embeddings from BIM.•An improved transR model to ...obtain better knowledge graph embeddings.•A self-evolving mechanism to automatically determine mistake elements.•100% sensitivity and 94% specificity on average in testing BIM models.
Model auditing is a critical step before conducting Building Information Modeling (BIM)-based Quantity Take-off (QTO) because these models may contain various human errors and mistakes, leading to insufficient semantic information and inconsistent modeling style in BIM models. The traditional object-oriented approach has difficulties in representing unstructured BIM data (e.g., interrelationships), while rule-based methods involve tremendous human efforts to develop rule sets, lacking flexibility for different requirements. Therefore, this study aims to establish a novel data-driven framework based on BIM and knowledge graph (KG) to represent unstructured BIM data for automatic inferences of auditing results of BIM model mistakes. It starts by establishing a BIM-KG data model via identifying required information for auditing purposes. Subsequently, BIM data is automatically transformed into the BIM-KG representations, the embeddings of which are trained using a knowledge graph embedding model. Automatic mechanisms are then developed to utilize the computable embeddings to effectively identify mistake BIM elements. The framework is validated using illustrative examples and the results show that 100% mistake elements can be identified successfully without human intervention.
Few empirical studies exist that can explain how different Building Information Model (BIM) based tool implementation strategies work in practical contexts. To help overcoming this gap, this paper ...describes the implementation of two BIM based tools, the first, to support the activities at an estimating department of a construction company and the second, to support risk management activities on a large infrastructure project. Using the cases, we illustrate that it is possible to closely align the functionality of existing BIM based tools with specific and well established construction management work processes. In this way, we illustrate that it is possible to implement BIM based tools in construction organizations in a "technology pull" manner. With these findings, we complement existing implementation theories in construction management that advocate "technology push" implementations during which existing work processes need to be radically changed to align with the functionality of the BIM based tools.
► We implemented BIM project management tools on two projects in a bottom-up fashion. ► This allowed for the close alignment of BIM tools with existing work routines. ► This allowed practitioners to more readily understand the tool's features. ► This increased the practitioner's motivation and awareness. ► This allowed for the pro-active involvement of the practitioners.
Building Information Modeling (BIM) provides significant benefits to the construction industry throughout the project management process. However, state-of-the-art BIM software provides erroneous ...quantity take-off (QTO) results above the negligible margin. In this study, QTO calculation algorithms have been developed for rough construction and implemented on BIM software to solve the stated problem. The developed QTO algorithms establish semantic relations and search the neighborhood of the structural elements to detect the intersecting structural elements. Amount of intersection is calculated by the dimensions and the locations of the intersecting structural elements. Exact length and spacing of the rebar and stirrups are calculated by considering the created semantic relationships. QTO of formwork is accurately calculated by considering the voids of the QTO computations which are obtained from the constructed semantic relationships by investigating the column-beam, slab-beam, and slab-column contact areas. Furthermore, the construction type of the scaffolding for the formwork is determined by considering both the dimensions of the structure and the established semantic relations. The developed algorithms are executed on BIM capable software and tested in four case studies with special conditions. The comparison with manual condition revealed that the proposed algorithms provided exact results. The semantic QTO algorithms developed in this study have the potential to be useful for BIM software developers.
•Proposing ontology-based semantic framework for quantity takeoff (QTO).•Establishing construction-oriented product ontology for light-frame building projects.•Querying a BIM design model for ...construction-oriented QTO using richer vocabulary.•Prototyping Autodesk Revit add-on toolwith light-frame building application case.
In building information modeling (BIM), the model is a digital representation of physical and functional characteristics of a facility and contains enriched product information pertaining to the facility. This information is generally embedded into the BIM model as properties for parametric building objects, and is exchangeable among project stakeholders and BIM design programs – a key feature of BIM for enhancing communication and work efficiency. However, BIM itself is a purpose-built, product-centric information database and lacks domain semantics such that extracting construction-oriented quantity take-off information for the purpose of construction workface planning still remains a challenge. Moreover, some information crucial to construction practitioners, such as the topological relationships among building objects, remains implicit in the BIM design model. This restricts information extraction from the BIM model for downstream analyses in construction. To address identified limitations, this study proposes an ontology-based semantic approach to extracting construction-oriented quantity take-off information from a BIM design model. This approach allows users to semantically query the BIM design model using a domain vocabulary, capitalizing on building product ontology formalized from construction perspectives. As such, quantity take-off information relevant to construction practitioners can be readily extracted and visualized in 3D in order to serve application needs in the construction field. A prototype application is implemented in Autodesk Revit to demonstrate the effectiveness of the proposed new approach in the domain of light-frame building construction.
There is ample evidence to show that in the Spanish architecture, engineering and construction (AEC) sector, implementation is underway of the Building Information Modelling (BIM) methodology, which ...is changing the way architectural projects are designed and managed in all their phases. This paper focuses on the quantity surveying practice, carried out in Spain using the newly available digital tools. Through a review of the existing literature and the qualitative analysis of four case studies (CS), it aims to define the key points related to the new processes, roles and skills required by quantity surveyors in this new paradigm of BIM methodology. The information collected from different sources was coded for its qualitative analysis. The findings from the research show that having a rich database and all the available information to design a three dimensional (3D) model are vital for enhancing the quality of the quantity take-off and a project’s cost estimate. From the findings, a new role emerges for the quantity surveyor as a cross-disciplinary profile needed to improve the process. In Spain, there is still a shortfall in knowledge levels of cost management software and the implementation of BIM, which differs in direct relation to company size and type.
•Quantity surveying in Spain with BIM•Qualitative analysis of four case studies.•3D model database•New cross-disciplinary profile
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