Using a Retro-BIM Workflow: Case Studies in Energy-Driven Retrofit Projects
Lecture    MP3565-P
Brian Skripac, Aryn Bergman
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This class presents 3 unique case studies that show how forward-thinking building owners are taking advantage of a retro-BIM workflow to capture a wide range of information about their existing facilities that they can use to make them more sustainable. To demonstrate this process across different scales and types of projects, we will discuss the 6,000,000-square-foot BIM Implementation Project at The Ohio State University Wexner Medical Center and the Chinatown Community Development Center’s 1204 Mason St. Facility (a 20,000-square-foot building consisting of low-income housing and small commercial business spaces). Finally, we will explore an energy-driven retrofit on Autodesk corporate headquarters in San Rafael, CA by the newly formed Autodesk Business Integration & Sustainability Initiative Group. The goal of this first project by the group is to test the recently developed energy optimization workflows and define a protocol for energy consumption reductions that will scale to the Autodesk global real estate portfolio.

Key Learnings

  • Use calibrated rapid energy models and detailed energy models to understand how buildings consume energy
  • Compare simulated energy use results from Autodesk® Green Building Studio® to utility bills to identify potential energy-efficient measures
  • Implement best practices and workflows for a retro-BIM initiative
  • Select the best methodology for capturing existing building geometry, such as 3D laser scanning


 Brian Skripac
Brian Skripac
As Director of BIM at DesignGroup, Brian Skripac leads the integration of Building Information Modeling technologies for all projects. He has recently been focused on the integration of BIM to optimize sustainable design outcomes throughout all stages of a project, as well as demonstrating and implementing the value BIM brings to facility owners from a lifecycle management strategy. In addition to managing BIM, Brian is frequently solicited by institutions, as well as professional organizations, to present his expertise and seeks to educate clients, consultants, and colleagues on the benefits and value BIM brings to industry. Brian holds a Bachelor of Science in Architecture from The Ohio State University, is a LEED® Accredited Professional, and an Autodesk® Revit® Architecture Certified Professional. He currently serves as a Leadership Team member for the AIA Technology in Architectural Practice Knowledge Community (TAP KC).

 Aryn Bergman
Aryn Bergman

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