Episode Nineteen – Open Source Part 2

Welcome to the BILT Academy Podcast!

Our nineteenth episode has been curated by our guest BILT Academy correspondent and previous BILT Academy Podcast guest Mark Wieringa. This month’s podcast is the 2nd in our 4 part series on Open Source, and in this episode, Mark interviews Jon Mirtschin.

 The BILT Academy team has started into a busy new year with not only pressing deadlines educationally as well as professionally, but the team is also very busy behind the curtains to shape a program for the BILT Academy Summit. So, Mark who was scheduled to co-pilot this episode with David took the initiative to support the team by taking on the lead on the open-source subject. Which turned out to be quite a journey of insights, vision and core knowledge. Since all interviewees have provided the BILT Academy with elaborate information we’ve decided to dedicate to each interviewee a podcast episode that will be airing within the first half of this year. 

For this episode, mark partnered up with a long-time collaborator and inspiring veteran of the open source community, a source of deep knowledge and founder of many open source tools and initiatives. Mr. Jon Mirtschin of Geometry Gym. 

Here are this month’s interviewees: 

  1. Jon Mirtschin, Director of Geometry Gym.

Jon Mirtschin graduated with a double degree Bachelor of Engineering/Science from the University of Melbourne, Australia. He worked as a structural engineer for 10 years before starting Geometry Gym in 2009. Geometry Gym develops BIM software tools specifically for Model Exchange using OpenBIM standards such as IFC. These are primarily in the form of plugins for applications such as Revit, Rhino, Grasshopper, Tekla and various Structural Analysis applications. 

Jon Mirtschin

Some resources from this month’s episode:

Jon’s contact details:

Website: www.geometrygym.com 

Email: jonm@geometrygym.com 

Twitter: @geometrygym

LinkedIn: Jon Mirtschin





More stuff on geometry gym 




Geometry Gym developments are freely available for academic study and research.

Episode Twenty – Coming February 24th, 2022

We return on February 24th, with an episode about generative design

BILT Academy Summit and BILT Europe – Coming May 2022

We also have some exciting news to share with you! The BILT Academy Summit as well as BILT Europe will be held as in-person events in Valencia, Spain! The BILT Academy Summit commences on May 2nd at the Polytechnic University of Valencia (UPV) with Spanish and international workshops for students and academics. This will then be followed up by our international BILT EUR conference from May 3rd – 5th at the Palacio de Congresos in Valencia, a stellar conference program awaits you and a lively exhibition! Mark your calendars, we look forward to meeting you in Valencia!

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Schedules and Dynamo

Hello everyone,

We have been working on a large-scale Project so far, and I would like to share with you and highlight a very important tool we can use in our workflows to make our work much more clear, fast and consistent:

“Using Schedules with Dynamo”

Especially in large scale projects like multi-purpose buildings, airports, etc, it’s inevitable that there will be lots of model mistakes and corrections, area tags missing, unplaced areas and lots of unestimated things. We shouldn’t forget the fact that, in Revit, everything is processed with data. So every component includes some information. Let’s do a quick example and see how schedules and Dynamo can make our work much faster than the normal way:

Doing Lighting Analysis:

(This is the sample model from Revit)

Let’s create a Schedule that shows our rooms and their information:

As we can see in the schedules, there are some rooms which are unplaced. Let’s imagine that we are designing and modelling a complex and there are hundreds of rooms in the Project. Would fixing this problem one by one be a reasonable way?

Let’s see the Dynamo script:

As we can see, we get all the rooms and filter them very easily. After that, we delete all the unplaced rooms automatically. Let’s go one step ahead.

In lighting analysis with Insight, let’s say that we want to exclude rooms like toilets, corridors, storages etc. Let’s go to Schedule which is automatically created by Revit when using Insight:

In large-scale projects, there will be lots of rooms like this. Let’s dive into Dynamo to automate this process again:

After running Dynamo, we can see the updates in our Schedule:

All in all, the main idea is, we can see schedules where every dirty laundry is exposed, after all, cleaned and folded by Dynamo 🙂