BIM

RDK is prepared for any client requests to complete BIM projects using the latest versions of Revit® MEP.  We utilize Autodesk's® Revit® MEP 2015 BIM software and have extensively-trained staff on the program who are fluent with the requirements and workflows involved in all levels of BIM projects.  RDK's ultimate goal with BIM is to have anything related to building design accessible to anyone within one location - the BIM model.

 

Mechanical Room & Data Center Walkthrough


For more information on BIM at RDK, feel free to contact Dan Villeneuve at dvilleneuve@rdkengineers.com.

Note to Revit Content Creators
by Dan Villeneuve

In BIM models, there are certain details that look great but add little to the overall rendering. In fact, adding these details comes at the cost of model performance. My experience has helped me identify several details to avoid inserting in my models. Instead, I choose to create the content from scratch in a more simplified manner. Below are some images that point out the detail that could be stripped to maintain model performance and still justify the geometry needed within our BIM models.

 

Threads add no value to the part and instead add levels of detail that cost model performance.

 

 

 

 

Excessive Bevels and Radius also add no value in terms of the physical being of the part. 90 degree corners would minimize calculations and will still determine the geometry required to show conflicts or room design.

 

 

Bolt Holes are very expensive in terms of model slowdowns since they do not have a flat surface at all. These types of calculations in any BIM platform will impede performance - the more holes, the slower you get. They are not required in terms of conflict resolution or flow calculations. All of our content created in-house is created without holes.

 

 

 

 

Extrusions and grooves add additional geometry that also adds no value and comes at a cost of model performance to all of our designers and drafters. Keep in mind that these types of small calculations could add a small amount of time (3-10 seconds) to each command, with five people all accessing the same file and noticing the same slowdowns. This type of content can cost the company a great deal of money.

 

General over-detailing is another issue. To the right is an image that shows all of the general types of over-detailing that we see, including tapers, holes, fillets, contours, bevels, over-detailing in the number of faces, threads, and sweeps. 

This amount of detail looks great and is beneficial if the intent is working on a rendering. But for BIM modeling, recognizing instances of over-detailing prior to placing it in a model will be a very costly oversight to the company and could likely annoy users.

 

 

Remember, in the case of creating BIM content, sometimes less is more.

 

 

BIM Examples

 
 

Data Center examples

 

University of Massachusetts LSL Coordination in Navisworks Manage
 
 
University of Massachusetts LSL in AutoCAD MEP