Structural Analysis With Revit

[Dannie Heinzen]

Firstlythis service uses the cloud to analyse your structure and as such, you will need to have some cloud credits to spend on this. In my experience, many companies have hundreds of unused credits so this should not be a huge problem.

The Robot engine is used to take your analytical model from Revit, along with loads and load combinations and then present results back either in the format of a report, a web page or directly within the Revit environment.

It is a good idea to check the model in Revit prior to starting the cloud based analysis. Use the Filters tool in Visibility Graphics to check for unconnected nodes. Tutorial for this is here: _iddaJzLg

A number of checks will be performed and you will then see the dialog box below. Here you can set the type of Analysis (Gravity or Static). In this example we will create a load take down so set the analysis to Gravity and click start.

I work for a structural engineering firm who specializes in residential wood framing design. We are considering Revit but need to know if it can intuitively calculate structural loading. In others words if we model a house will it tell us where to place beams & headers to support second floors and roofs and size these members as well? We would also like to be able to input various live and dead loads and have the sizing update accordingly. Can Revit perform these actions or are there any plug ins or software that can work within revit that will perform these actions? Thank you.

I have made a simple Bailey Bridge model in Advance Steel which was transferred to Revit with minimal issues. After defining the boundary conditions in Revit and inserting a temporary decking material (which I intend on changing, but not sure if it is easier in Revit or Robot), I try tried to bring the model into Robot for analysis, but there seem to be issues.

In Revit, I adjusted the analytical lines so that they connect before trying to transfer to Robot, but this does not fix the issues when I try and calculate the model. I have the Revit Model attached for reference, any help would be greatly appreciated.

I think the decking I tried to transfer from Revit was causing the issues for me in Robot during the calculation. Is there a way to make a custom decking that matches the material properties in the photo attached? I tried making new orthotropic thickness, and also a new simple member section in Robot, but I can't match these properties and create an analytical area of the floor at the same time.

There is no specific element for such slab supported by beams. I would define it by separate beams supporting slab (defined by panel) as in your previous model. To make this model consistent beam neutral axes should be defined in neutral panel/slab plane. After that offset in Robot can be used for beams to change neutral beam axes position in respect to slab deck.

I'm trying to learn Revit for my new job and this is the first problem I can't seem to solve. "There are no available results for this project." Am I getting this error because of my "Required reinforcement results not available." warning? Thank you for your time.

I think the issue is software. I was able to get the analysis to run from 5/31 to 6/1 with no issues after installing the most recent hotfix for Revit. However, not a single model today has run, not even the same file I was modeling yesterday is running today. Been sitting at this page for half an hour. Any ideas?

3. I don't see any of my past analyses, but When I attempt to use "Analyze in cloud" I am notified "You are not authorized to use Structural Analysis for Revit". All of my analysis goes through Robot.

My additional answer to #2 is due to the following. I eventually just deleted objects to simplify the structure and tried to do the robot analysis each time. That didn't work so I rebuilt the steel frame structure with minimal levels and reference planes. The analysis worked without walls. My use of walls seem to trip up robot and produce error "Instability (of type 3) detected at node ####" in direction R(X,Y,Z)".

In the end, I believe that 90% of the problems were my usage errors, the issue I'm having is that the error reporting is often not detailed enough for me to understand what the exact issue is. I'm doing ok now, but the first 2 weeks were really rough as a new user.

There was once a time when we all wished for a magical pencil that could breathe life into our drawings. Life, in that case, would have been such a dreamy fairy tale. If you are a structural engineer, consider your wish granted (not literally, but almost!). It's not a magic pencil but a software that can transform flat 2D drawings into vivid virtual prototypes, sparing you countless gruelling hours. Yes, I am talking about one of the most powerful software programs, Autodesk Revit.

With over 50+ BIM software and tools, Autodesk Revit is one of the most popular and widely used software among Architecture, Engineering, and Construction (AEC) professionals. Its market dominance speaks volumes. In fact, around 46% of AEC industry professionals, from freelancers to employees, rely on Revit for the lion's share of their tasks. Revit for structural engineers aids in instant revisions, as the name suggests.

Revit, the widely-used Building Information Modeling (BIM) software created by Autodesk, has pushed aside the old methods rooted in two-dimensional thinking, making way for three-dimensional technology. Known for simplifying the design and construction processes, Revit for structural engineers constantly advances with every new update, introducing exciting features and improvements.

The AEC industry is plagued with fragmented work, lack of collaboration, poor work culture, miscommunication, limited visualisation, and many more. For today's structural engineers, Revit is introducing new upgrades like Revit structural analysis, site modeling, structural rebar analysis, etc., which will enhance multidisciplinary coordination and foster collaboration among structural engineers and other stakeholders, like architects, MEP engineers, project managers, etc.

Everyone loves a 3D model. But more than just pictures and better visualisation, 3D models are highly beneficial for construction processes and structural engineering. Data-rich 3D modeling helps increase efficiency and functionality on-site. There is an ever-widening gap between the specifications and dimensions used in 3D models, compared to construction onsite.

With Revit for structural engineers, this gap will be filled by improving workflow and coordination and also by allowing the surveyors and project managers to view specific dimensions, types of connectors, joint types, and more from the model. Data-rich 3D modeling, premade construction models, custom fabrication templates, easy data extraction, transfer of Revit structural analysis results, and early identification of clash detection are some of the applications that help facilitate better collaboration among stakeholders.

Proposal evaluation, 3D modeling, structural analysis and transfer of analysis, all of these are just some of the perks of interoperability incorporated in Revit. This allows for savings of tens or even hundreds of hours as compared to manually checking the drawings on paper. And it is a common fact to all that in the construction world, how much time savings is worth, especially in financial terms.

The widespread use of BIM concerns global firms. This is because the implementation of BIM workflow enabled automated clash detection to be carried out. Unlike the old-fashioned methods drowned in complex manual processes, Revit for structural engineers comes with a built-in capability to detect collisions between objects. This gives the engineers an edge as they can avoid these clashes, which will save the raw material in return. Simultaneously, structural engineers can now extricate the precise amount of material required and save tons of money spent on raw material that goes to waste.

One of the standout features of Revit that empowers engineers is the creation of intricate 3D models, accompanied by bidirectional views. This means effortless 3D details and seamless connection of the data within a single model and file. What a relief for structural engineers! Any modifications made to the 3D model are automatically propagated to these views, reducing the risk of discrepancies. Enhanced bidirectional views with 2D elements and dimensions can now be optimised for error reduction, improved work processes, and streamlined scheduling. The cherry on the cake is that formwork and positioning are also improved in the model.

Bridging the gap between 3D and 2D views, Revit for structural engineers effortlessly integrates reinforcement modeling into the project sheets. Intelligent 3D reinforcement allows the software to reinforce precast or cast-in-place concrete components into the model wherever needed. The ability to retain dependencies within reinforced objects, such as fabric sheets and rebar, ensures that any changes to the model will be reflected automatically. This proves invaluable in meeting local building requirements. Additionally, Revit simplifies the creation of comprehensive 2D reinforcement plans, detailing positions, dimensions, and even steel specifications, cutting, and bending schedules.

Memorising all the building standards and bylaws for each region is like teaching a fish how to climb a tree. For structural engineers, it is crucial that buildings are made as per the standards of various nations and regions. This is where Revit saves you the effort of remembering all the standards. It has in-built region-specific models, templates, and libraries made as per the standards for the engineers to use. These models comply with the local regulations and are designed in compliance with the industry standards of that country. The icing on the cake is that these templates are completely editable, and engineers can choose from the vast library of Revit and make changes as per their project requirements.

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