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What is ICDAS?

About ICDAS 


ICDAS for VDC in the 4IR 

Virtual Design &

ICDAS Founder 


ICDAS is an abbreviation of Integrated Construction Design, Analysis and Animation System.

This is state-of-the-art add-ins software that automatically, and concurrently, creates BIM

and FEM models based on a parametric input file. ICDAS addins/plugins do not provide only a

parametric interface for BIM and FEM models, but also to automate the models, in building and

infrastructural constructions, as well.


BIM and FEM models have been a wish for construction industry in many years. Software for BIM and FEM are developed fast, very fast, but still in two different products in the last era of Industry 3.0. Recently, Structural Analysis for Revit and Tekla Structural Designer has presented theirs BIM-FEM integration with promising technology in the Industry 4.0. Yet, the FEM features so far are limited in building construction with a few functions. On the other hand, full FEM features are found in some leading FEM software, but they do not communicate clearly to the BIM model. As the result, designer/assistant and engineer still create two different models on two platforms, and unfortunately, overlook the deviations. ICDAS eliminates these deviations by get the two platforms to read the same parametric input, and to automate the same models through ICDAS add-ins/plug-ins. In doing do, ICDAS has prioritized on full features FEM model and an associated BIM model. Among many tests since 2018, Revit (Revise Instantly) and LUSAS (London University Stress Analysis System) have been chosen as default software in ICDAS integration workflow. Revit is a BIM-tool provided intelligent model-based technology. LUSAS provides full FEM features for building and infrastructural constructions. 


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Example of ICDAS animations

Cylinder Buildings model (CB)




in an ICDAS project can both be a building or an infrastructural constructions. The materials are in concrete and/or steel. For building construction the materials are stored in Revit Material Libraries as glass, wood, insulation… and so on. For infrastructural constructions e.g. bridges and wind turbine foundation Revit family generic models are employed to automate any shapes of the profiles, and curved alignments for bridges. Construction can also be a quite simple as you meet often in your projects. Some examples are shown in the Models tab above. The term “Construction” in ICDAS from 2017 March refers also to ‘Virtual Design & Construction (VDC)’. It is about data management of 3D information model from phase to phase through a construction processes. VDC is also known as designing and then building virtually before building in reality, using digital tools such as wearable HoloLens and Headsets for Augmented Reality (AR) and Virtual Reality (VR). More about these technologies are outlined in the design section. 


in ICDAS happen by automating BIM and FEM model on the same time, or just the needed BIM or FEM model solely. The automation read a common parametric Excel input, and then automates a Revit model and a LUSAS model immediately. Unlike BIM-FEM or FEM-BIM integration, the users do not need to complete the one task for the other task. ICDAS automation reduces further time for mapping materials and profiles between BIM and FEM software as they are written once in Excel input. Advantages of Excel-based automation models are further listing below just to name a few: 


› very large numbers of parametric objects can be automated in one click, as

  the Excel allow 1048576 rows and 16384 columns input of data.


be also the input for other software employed in project if other automations



be also the output of data writing back from the 3D information model.


the input can be reused from project to project as they provide an overview

  of project data.


allow the users to keep many input in one Excel file, as sheet1 is in linking to

  BIM and FEM only.


allow the users to apply the other sheets for other calculations, e.g. points of

  curved lines/surfaces which are linked to sheet1 for BIM model, or Eurocodes

  post processing for FEM results.


With BIM model automated in Revit, and Revit LIVE subscription for cloud-services, the users can experience the model in virtual reality using HTC headsets in scale 1:1 and 360 degrees views. The benefit of the cloud-services is also that once the model is in cloud-services, one can open it without the need of Revit software, and anywhere having the internet connection.



in ICDAS refers to two issues described in short below.


In terms of structural analysis it refers to FEM software such as LUSAS, ROBOT or StruSoft. Analysis model provides e.g. deformations and sectional forces for a construction at a given load or loading combination. As the results all dimensions of components of the construction are optimized and verified for a given code, e.g. Eurocodes.


In terms of VDC, the analysis models refer to 4D- and 5D models using software such as Synchro and Sigma, respectively. The 4D- and 5D models are run from 3D information model e.g. Revit providing all needed input. As the results, the time scheduling and price are known for the project. These two software provide in addition also quantity, project markup, conflict resolution, code checking, flow analysis, energy analysis or visualization.

In the above two analyses ICDAS focus on the structural analysis for automation of the three parts in a FEM model:

   - Geometry of the model as generate in BIM model

   - FEM mesh, element properties, materials, coupling & support conditions.

   - Load cases & loading combinations on the model.


Once the above three parts automated, the users can start the analysis work. LUSAS displays deformations in 3D cross section, having smart combinations of envelopes of load cases, and opposite. They are the desired features among many that LUSAS is suitable for FEM works, especially LUSAS is easy to use for both of simple and advanced cases.



For the 4, and 5D analysis ICDAS provide also automation for the basis functions regarding time scheduling and price based on Revit model, and write to Excel file. It is the case when the users want to save the cost of subscriptions for Synchro and Sigma.


 in an ICDAS project refers to two issues described in short below.


Animation of landscape, terrain and 3D information model using 3ds Max,

  AutoCAD Civil 3D and Revit, respectively.


Animation of 3D model in line with time scheduling and price as the

  construction is built in time function, using Synchro and Sigma, respectively.


For the landscape animation ICDAS provide guides for rendering’s parameters and animating camera motion in 3ds Max, and how to edit the move in highest quality of images.





 in an ICDAS project refers to the following points as summary for the above mentioning concepts

› BIM-FEM integration

› AR and VR reality tools

› Design and Static Documentation


The two available workflows for BIM-FEM in ICDAS are

› Automate Revit (BIM) and LUSAS (FEM) models concurrently.

› Automate FEM model from existing BIM model, or opposite.


Depended on type of construction, and available materials of a project from the beginning, one can select a suitable workflow of BIM-FEM integration. The first workflow is suitable for constructions which require advanced structural analysis features with LUSAS, and where both of BIM and FEM are created concurrently from the beginning. This option is powerful for companies which can design and analyst within the company. The second workflow is suitable for the cases where one of the models is existed, either a BIM model or a FEM model. This option requires high level of skill from the users in both of BIM and FEM to ensure the export/import is correct. ICDAS provide guides and add-ins for individual cases of this option. The add-ins can e.g. be automatic creation of loads and loads combinations on the FEM model which are not created in the BIM model.


In both of workflows ICDAS focuses on digital tools for digital construction. With e.g. AR and VR tools (HoloLens and Headsets) the users can easily check any detail in the 3D construction in scale 1:1. The papers drawings for 2D dimensions are always available from the BIM model, which can be automated at any desired section.


Finally, System in ICDAS focusses also on Design and Static Documentation which are generated from FEM and BIM tools. 


 is a small team of structural engineers and .NET C# programmers with over
16 years' experience in our fields. Yet, our technology has been used in Ring 3
Light Rail project, Copenhagen, Denmark to control the 3D geometry and to
perform some of FEM analyses. The Ring 3 is the biggest light rail project in
Denmark, as well as in all the five Nordic countries (2016-2021). Also our
examples of BIM and FEM models have shown that ICDAS is at the forefront of
the automation it serves.

Updated 10-08-2017