Question

TOPIC: BIM-Semantics (IFC) Enrichment for Modular Construction (REPORT)

Question: What are the future recommendation and works for BIM in the structural aspects of REVIT?

Answer 1

BIM (Building Information Modeling) methodology intents the integration of all phases of the construction process, i.e. the integration and promotion of collaborative work by all the design disciplines involved in the design phase. Besides, it is supported by three-dimensional visualization applications. The great potential of BIM concept is also in standardization of information, being supported, among others, by the standardization of methods to perform the objects modeling process. Based on this, potential improvements in the preparation, coordination and revision of design documents, and management and maintenance of the built environment might be markedly valuable.

Information exchange between specialties in Revit-

When BIM is used, and in order to enhance advantages, effective communication is crucial between all disciplines. To overcome this problem, Revit software incorporates in the Suite Revit application platform, the Revit Architecture, Revit Structure and Revit MEP which are applications oriented to disciplines such as architecture, structures, facilities, equipment and water and wastewater systems, HVAC installations and electricity, respectively. The basis of the program is the same, only tools and features are changed to allow easier modeling of the different construction objects from the various disciplines. Stating that appropriate tools and features are provided to different design disciplines in a single and common BIM platform, these various project elements created in the respective modules can be more easily fully compatible with the rest, allowing collaborative work, improved visibility into the information sharing process and synchronization of Revit models without requiring any kind of conversion [9]. The cooperation between disciplines can be performed on Revit by using the tool ‘Coordination’. With this tool, amendments may be easily proposed between disciplines avoiding conflicts and architectural constraints. In order to streamline the analysis of the various design disciplines when integrated with others, filter options are available to the various 2D and 3D views allowing to show only the relevant information, otherwise all information would be observed together. Fig. 1c) presents the design of foundations and structures, facilities, equipment and water and wastewater systems, HVAC installations and electricity active at the same time.

Extensions and Revit Supplements In Revit-

software there are add-on menus that add capabilities and functionalities to the software. Extensions are different from supplements in that the extensions are fully developed and supplied by Autodesk, while supplements are produced and provided by other companies working in partnership with Autodesk to facilitate the modeling of their products. For example, for Revit Structure, the provided extensions are the following :

• Modeling: addition of some tools and capabilities that can facilitate / streamline the modeling process. For example, a feature that allows the creation of a BIM model by introducing data in Excel sheets, or other feature to automate the definition of structural lines in plan and elevation, eliminating the need of introducing them individually.

• Analysis: provides calculation possibilities for structural elements pre-design in a first approximation to the structure to be modeled.

• Reinforcement: allows the automated modeling of reinforcement in concrete elements. • AutoCAD Structural detailing: allows communication with the AutoCAD Structural Detailing.

• Steel Connections: allows the modeling process of the metal links, although it is still currently limited to only two types of connections, its use is still extremely limited.

• Bridges: introduces modeling capabilities and functionalities aimed for the construction entities - bridges.

Implementation of BIM on foundations and structures project-

Revit Structure is a modeling software that integrates a geometrical model of various materials with an editable and independent analytical model. The Revit Structure includes a single model for structural analysis and documentation, construction documents and detailing structures. Moreover, the various features allow Revit Structure to allocate construction documentation to each object; generate structural details; support multiple data formats; perform multi-material modeling; use parametric structural components; develop collaborative work; and set interoperation with Autodesk Revit Architecture and Autodesk Revit MEP. It is also important to note that the Revit platform has two partitions name, 'Revit Project' and 'Revit Families'. Revit Project is addressed to the modeling of the project itself, . initially not available in Project Revit, which become usable in modeling and can be used on the modeling process on other designs. Revit also has a second tool for creating new objects, which is in the Revit Project itself with the name 'model in place' where the modeled object can only be used in the current model. Revit divides the various design disciplines by category. Therefore, it recognizes structural elements modeled as a structural element referring to the category of foundations and structural design. Consequently, it is necessary to define their structural properties. In Revit Structure, the modeled elements are usually automatically considered to be structural, but one can make changes – those changes can also be set by the architect when using Revit Architecture.

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