scholarly journals Detailed Assessment of Embodied Carbon of HVAC Systems for a New Office Building Based on BIM

2020 ◽  
Vol 12 (8) ◽  
pp. 3372 ◽  
Author(s):  
Christina Kiamili ◽  
Alexander Hollberg ◽  
Guillaume Habert
Keyword(s):  
Environmental Impact ◽  
Hvac Systems ◽  
Visual Programming ◽  
Office Building ◽  
Building Sector ◽  
Carbon Reduction ◽  
Embodied Carbon ◽  
Building Information ◽  
Detailed Assessment ◽  
Visual Programming Language

The global shift towards embodied carbon reduction in the building sector has indicated the need for a detailed analysis of environmental impacts across the whole lifecycle of buildings. The environmental impact of heating, ventilation, and air conditioning (HVAC) systems has rarely been studied in detail. Most of the published studies are based on assumptions and rule of thumb techniques. In this study, the requirements and methods to perform a detailed life cycle assessment (LCA) for HVAC systems based on building information modelling (BIM) are assessed and framed for the first time. The approach of linking external product data information to objects using visual programming language (VPL) is tested, and its benefits over the existing workflows are presented. The detailed BIM model of a newly built office building in Switzerland is used as a case study. In addition, detailed project documentation is used to ensure the plausibility of the calculated impact. The LCA results show that the embodied impact of the HVAC systems is three times higher than the targets provided by the Swiss Energy Efficiency Path (SIA 2040). Furthermore, it is shown that the embodied impact of HVAC systems lies in the range of 15–36% of the total embodied impact of office buildings. Nevertheless, further research and similar case studies are needed to provide a robust picture of the embodied environmental impact of HVAC systems. The results could contribute to setting stricter targets in line with the vision of decarbonization of the building sector.

scholarly journals BIM-Based Visualization Research in the Construction Industry: A Network Analysis

2019 ◽  
Vol 16 (18) ◽  
pp. 3473 ◽  
Author(s):  
Zezhou Wu ◽  
Changhong Chen ◽  
Yuzhu Cai ◽  
Chen Lu ◽  
Hao Wang ◽  
...  
Keyword(s):  
Building Information Modeling ◽  
Visual Programming ◽  
Information Modeling ◽  
Scientometric Analysis ◽  
Research Status ◽  
Holistic Understanding ◽  
Building Information ◽  
The Status ◽  
Research Findings ◽  
Visual Programming Language

Visualization is one of the main features of Building Information Modeling (BIM). It has many advantages throughout the lifecycle of a construction project, and it has become a timely research topic in recent years. However, no attempt has been made to give a holistic understanding of the existing BIM-based visualization research status. Thus, this study aims to conduct a scientometric analysis of the existing BIM-based visualization literature and to gain a snapshot of the research status during the period 2010–2019. A total of 255 articles were abstracted from the Scopus database. Then, the VOSviewer program was employed to visualize the research status from the perspectives of scholars, countries/regions, journals, articles, and co-occurring keywords. Results revealed that Wang X. published the greatest number of articles, while Cheng J.C.P. received the greatest average normalized citations. Furthermore, Automation in Construction was identified as the most influential journal and the article “Building information modeling (BIM): trends, benefits, risks, and challenges for the AEC industry” was the most cited paper. Through the keywords co-occurrence analysis, “virtual reality” and “visual programming language” were identified as the emerging themes in this field. The research findings can provide both researchers and practitioners with a better understanding of the status quo and trends of the BIM-based visualization research.

TEACHING VISUAL SCRIPTING IN BIM: A CASE STUDY USING A PANEL CONTROLLED BY SOLAR ANGLES

2018 ◽  
Vol 13 (1) ◽  
pp. 113-138 ◽  
Author(s):  
Karen M. Kensek
Keyword(s):  
Parametric Design ◽  
Visual Programming ◽  
Building Industry ◽  
Building Information Model ◽  
Form Generation ◽  
Building Information ◽  
Visual Scripting ◽  
Visual Programming Language ◽  
Metal Panels

Programming and scripting can be used to activate a 3D parametric model to create a more intelligent and flexible building information model. There has been a trend in the building industry towards the use of visual scripting that allow users to create customized, flexible, and powerful programs without having to first learn how to write traditional code. Using visual scripting, users graphically interact with program elements instead of typing lines of text-based code. Nodes are created and virtually wired together; they can be numbers, sliders for adjusting values, operators and functions, list manipulation tools, graphic creators, and other types. Text based coding programs such as Python can also be used for the creation of custom nodes when greater flexibility is desired. Examples from professional firms include scripts that help automate work in the office to increase efficiency and accuracy (e.g. create escape routes, renumber rooms by levels, create documentation), assist in form generation (e.g. parametric design of metal panels, rebar generation, coordination between Revit and Rhino), analyze BIM files (e.g. terminal airflow, visual loads and capacity), and provide analysis results (e.g. daylighting, thermal comfort, window optimization). One can learn the basic steps of learning a visual programming language through the use of Dynamo within Autodesk Revit. The example used is for a façade component that changes based on the sun's altitude.

scholarly journals Parametrical design tool and the production of technical data for superadobe domes

2019 ◽  
Vol 14 (1) ◽  
pp. 45-60
Author(s):  
Deborah Macêdo dos Santos ◽  
José Nuno Beirão
Keyword(s):  
Technical Information ◽  
Visual Programming ◽  
Design Tool ◽  
Information Modeling ◽  
Experimental Methodology ◽  
Sustainable Living ◽  
Technical Data ◽  
Building Information ◽  
Parametrical Design ◽  
Visual Programming Language

The interest in earthbag dome construction (also known as earthbag or superadobe) has been increasing as world consciousness develops to achieve the planet’s equilibrium for sustainable living. The main objective of this research is to develop a parametric tool to help architects modeling virtual earthbag domes from ideation to construction phase. This challenge has been addressed by adopting an experimental methodology that explores parametric generative design with the use of a visual programming language (VPL). In this paper we present the development of a tool for the ideation level including features that allow for the calculation of material quantification. Even thought, the tool does not work in a Building Information Modeling environment, the generative model outputs technical information to support construction, namely material quantities. The usability of the tool was validated by a random international sample of experts.

scholarly journals The Evolution of Interactivity, Immersion and Interoperability in HBIM: Digital Model Uses, VR and AR for Built Cultural Heritage

2021 ◽  
Vol 10 (10) ◽  
pp. 685
Author(s):  
Fabrizio Banfi
Keyword(s):  
3D Models ◽  
Visual Programming ◽  
Modern Architecture ◽  
Building Information Modelling ◽  
Information Modelling ◽  
Digital World ◽  
Building Information ◽  
Heritage Building ◽  
Visual Programming Language ◽  
Improve Access

Today, a building is not just a “body” or a “machine” as defined by modern architecture, but rather an immaterial entity immersed in a digital world where not only its components but also the information associated with it are accounted for. In recent decades, building information modelling (BIM) has made it possible to move from 2D CAD drawings to 3D models capable of supporting different processes and interacting with different disciplines in the AEC industry for storing, documenting and sharing heterogeneous content. It has thus become possible to direct these techniques towards built heritage to investigate new forms of communication and share heritage building information modelling (HBIM) models. This research investigates this evolution in both generative terms (scan-to-BIM process) and cultural and historical terms in order to orient BIM uses towards novel forms of interactivity and immersion between users and models. The author proposes the use of a digital process and the development of VR and AR environments based on a visual programming language (VPL) to improve access to a deeper knowledge of HBIM models and the artefacts and information contained therein.

scholarly journals AUTOMATED SEMANTIC AND SYNTACTIC BIM DATA VALIDATION USING VISUAL PROGRAMMING LANGUAGE

Rivista Tema ◽  
2021 ◽  
Vol 7 (N.2 (2021)) ◽  
Author(s):  
Keyword(s):  
Programming Language ◽  
Graphical Model ◽  
Three Dimensional ◽  
Visual Programming ◽  
Information Modeling ◽  
Data Validation ◽  
Information Need ◽  
Knowledge Process ◽  
Building Information ◽  
Visual Programming Language

Building Information Modeling (BIM) is part of a digitalization process that, in recent years, has been revolutionizing the way buildings and infrastructures are designed, built, and maintained. Compared to traditional processes, BIM enhances the production and the management of data related to buildings and infrastructures throughout their life cycle. It is founded on a three-dimensional graphical model based on the specificity of project goals following the “level of information need” defined in BIM procurement documents. In this framework, an automated process for checking information within a BIM model plays a role of fundamental importance. Although this increases the model’s reliability, on the other hand, it decreases the time of working. Therefore, this research aims to develop a working methodology based on Visual Programming Language (VPL) for an automated BIM Data Validation process. This workflow aims to meet the growing need of owners to centralize data relating to their real estate assets to always have the appropriate one at the operational level. This methodology has been tested in different case studies to evaluate the strengths and weaknesses of using a standardization protocol in a large portfolio and complex buildings. This allows the huge amount of data from BIM models to be checked and summary reports to be produced, sharing with the various stakeholders involved in the knowledge process.

scholarly journals Development of Building Information Modeling Template for Environmental Impact Assessment

2021 ◽  
Vol 13 (6) ◽  
pp. 3092
Author(s):  
Sungwoo Lee ◽  
Sungho Tae ◽  
Hyungjae Jang ◽  
Chang U. Chae ◽  
Youngjin Bok
Keyword(s):  
Environmental Impact ◽  
Performance Assessment ◽  
Environmental Performance ◽  
Building Materials ◽  
Building Information Modeling ◽  
Information Modeling ◽  
Assessment Tools ◽  
Building Information ◽  
Environmental Performance Assessment ◽  
Assessment Results

Eco-friendly building designs that use building information modeling (BIM) have become popular, and a variety of eco-friendly building assessment technologies that take advantage of BIM are being developed. However, existing building environmental performance assessment technologies that use BIM are linked to external assessment tools, and there exist compatibility issues among programs; it requires a considerable amount of time to address these problems, owing to the lack of experts who can operate the programs. This study aims to develop eco-friendly templates for assessing the embodied environmental impact of buildings using BIM authoring tools as part of the development of BIM-based building life cycle assessment (LCA) technologies. Therefore, an embodied environmental impact unit database was developed, for major building materials during production and operating stages, to perform embodied environmental impact assessments. Moreover, a major structural element library that uses the database was developed and a function was created to produce building environmental performance assessment results tables, making it possible to review the eco-friendliness of buildings. A case study analysis was performed to review the feasibility of the environmental performance assessment technologies. The results showed a less than 5% effective error rate in the assessment results that were obtained using the technology developed in this study compared with the assessment results based on the actual calculation and operating stage energy consumption figures, which proves the reliability of the proposed approach.

scholarly journals Utilization of Building Information Modeling for Arranging the Structural Kingposts

Buildings ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 323
Author(s):  
Vachara Peansupap ◽  
Pisal Nov ◽  
Tanit Tongthong
Keyword(s):  
Underground Structure ◽  
Visual Programming ◽  
Information Modeling ◽  
Construction Technology ◽  
Underground Structures ◽  
Building Information Modelling ◽  
Engineering Knowledge ◽  
Building Information ◽  
Rule Based Approach

The kingpost was a vertical element that was used to support the structural strut in the deep excavation. The structural kingpost was commonly arranged by experienced engineers who used two-dimensional construction drawings. Thus, it was still time-consuming and error-prone. Currently, an available construction program has been developed to arrange the structural kingpost by identifying the clash problems in the 3D environment. However, they have a limitation for detecting the clash that was unable to visualize the concurrent clashes between kingpost and many underground structures. Then, the engineer cannot see all the clash incidents with each kingpost and move the kingpost to avoid the clashes successfully. Since the kingpost arrangement was still an inefficient practice that was limited in the visualization aspect, this research used engineering knowledge and advanced construction technology to detect and solve the clashes between kingposts and underground structures. The methodology used engineering knowledge of kingpost arrangement to develop the system modules by using a rule-based approach. Then, these modules were developed into the system by using visual programming of Building Information Modelling (BIM). To test the system, an underground structure from building construction was selected as a case study to apply the developed system. Finally, the finding of this study could overcome human judgment by providing less interaction in the kingpost arrangement and visualization improvement of clash occurrences in the 3D model.

Sign in / Sign up

Export Citation Format

Share Document