Building Simulation & Beer!

Summer is here, it's warm outside, and it's been quite a while, so CHIBPSA (the Chicago Chapter of IBPSA-USA) is having a happy hour at The Marq downtown on Thursday, June 8th @ 5:30 to celebrate. Come out for drinks, networking, swapping tips, and hanging out with other Chicago-area building simulation folks. See you there!

For more information about this event or CHIBPSA, please email

Please RSVP on EventBrite using the link below:




Computational Design Strategies for Environmental Simulation Presentation




This presentation will focus on environmental simulations, including shadow analysis, solar irradiation, and daylighting.
Through various case studies, we will explore various analyses, and strategies for visualizing and using the results during the design process.
Tools used in the case studies presented include: DIVA, Ladybug/Honeybee, Excel, and custom scripts (mostly created with Grasshopper).


Thursday, March 30, 2017
5:30 PM – 7:00 PM CDT
5:30-6:00 PM: Networking
6:00-7:00 PM Presentation and Q&A


Neil Katz, AIA


224  South Michigan Ave. 
Chicago, IL 60604
Register for the event at the following link:
This presentation will also be offered as a webinar. The webinar will begin at 6:00 p.m. CDT.
Please register for the webinar with the following link:
Webinar ID: 877-257-139





THE Holiday Party

Join Chicago's best and brightest in this holiday celebration!

Living Building Collaborative Chicago + USGBC-Illinois + Passive House Alliance Chicago + AIA Chicago COTE + CNU Illinois + Architecture for Humanity Chicago + International Building Performance Simulation Association Chicago Chapter

Thursday, December 8, 2016 from 5:30 PM to 9:00 PM (CST)

Chicago, IL


Event Details

THE Holiday Party of the season is back!  Find all of your favorite people at ONE awesome holiday party this year. Join members and friends of the Living Building Collaborative Chicago, Passive House Alliance Chicago, USGBC-Illinois, AIA Chicago COTE, CNU Illinois, Architecture for Humanity Chicago, and the International Building Performance Simulation Association Chicago Chapter for an evening of food, drinks, music and good times.

Learn a little about each organization, find ways to collaborate, and learn about how to get more involved in 2017 projects and initiatives! Food and drinks are included in your ticket price.


ASHRAE / IBPSA 2016 Lowdown Showdown - Chicago Round Table

Please join Chicago Chapter of IBPSA for round table discussion with the local 2016 Lowdown Showdown Participants. We will have a representative from the following teams:

  •          Autodesk – Bobby Larson

  •          IES VE – Irina Susorova, Shona O’Dea, Kenneth Griffin

  •          Trane Trace – Ajit Naik, Erik Raith

Event will be hosted by DLR Group, 333 W Wacker Dr, Suite 400, Chicago, IL 60606.

For online participation, please join the webinar at the above mentioned time.

About Lowdown Showdown:

Held in conjunction with the conference, the ASHRAE Lowdown Showdown modeling challenge showcased the work of eight teams and over 80 participants, who competed to model a net zero or below building. The baseline building was a 50,000 ft2, 3-story Outpatient Health Care facility.

Each team was comprised of at least one coach, captain and registered attendees who adopted roles on each team, such as engineer, architect, designer and energy modelers.  The teams were given a common playing field with “Model Building Requirements.”

A half day of the conference was devoted to the Lowdown Showdown for the teams to present their projects, attendees to ask questions and voting.  The models were created using the available industry software thereby providing excellent hands-on examples of how to use different aspects of the software.

Teams were evaluated in five categories: energy, teamwork, practicality, creativity and workflow.  Conference attendees voted electronically for the best model in each category. The results were announced at a reception that evening.

Click a team name below to view the 2016 ASHRAE Lowdown Showdown team projects and results:

  • WHEN
  • Thursday, September 29, 2016 from 5:30 PM to 7:30 PM (CDT) - Add to Calendar
  • 333 W Wacker Dr, Suite 400, Chicago, IL 60606 - View Map



Also be sure to check out IBPSA-US simbuild review:

Weather Data for Energy Modeling - January 2016

Every energy model depends on good, accurate weather data. This webinar will offered presentations from three experts to discussed: 
• How weather data files are developed 
• TMY (Typical Meteorological Year) data vs. AMY (Actual Meteorological Year) data 
• Confidence vs. skepticism in weather data 
• Customizing weather data for locations or microclimates 
• Selecting and using the “right” weather data file 
• Future climate impacts and weather models 
• Demonstration of Elements software application from Big Ladder Software and Rocky Mountain Institute (

Our presenters were: 
• Joe Huang, White Box Technologies 
• Michael O’Keefe, Big Ladder Software 
• Ben Brannon, ARUP 

The webinar was recorded for later viewing, and posted at

Also available for your review is each of the presentation slide decks and some of the white papers referenced in the webinar:

Current 2016-2017 Board (2016)

President: Heather Beaudoin, Grumman/Butkus Associates 

Vice-President:  Shona O'Dea, DLR Group

Secretary:  Emir Pekdemir, Simpson Gumpertz and Heger

Education: Matt Huffman, Murphy & Miller, Inc.

Outreach: Craig Burton, Interface Engineering

Website: Erik Raith, DLR Group

IBPSA-USA Liason: Ralph Muehleisen, Argonne National Laboratory


About the Chicago Chapter

What is IBPSA? And why did we start a Chicago chapter?

IBPSA is the International Building Performance Simulation Association. There is a United States regional affiliate (called IBPSA-USA), and IBPSA-Chicago is an officially-recognized affiliate of that organization.


OK, but what does IBPSA do? From the IBPSA-USA website: “The mission of IBPSA-USA is to advance and promote the science of building simulation in order to improve the design, construction, operation, and maintenance of new and existing buildings in the United States.”


Locally, we recognize that there is a growing community of building performance modelers. This includes consulting engineers, architects, energy service contractors, researchers, and academics who all have interest in some aspect of building simulation. Our goal is to provide networking and educational opportunities for interested professionals in and around Chicago.


Welcome to IBPSA-USA


IBPSA-USA is the United States regional affiliate of the International Building Performance Simulation Association (IBPSA). The mission of IBPSA-USA is to advance and promote the science of building simulation in order to improve the design,  construction, operation, and maintenance of new and existing buildings in the United States.


Follow us on our LinkedIn page –


About the Chicago Chapter test

Membership in the Chicago Chapter is free, but we do encourage people to join IBPSA-USA (currently $45/year).  Our technical meetings and networking events are open to anyone, and we offer live webinars for remote viewing when possible.

Board members are required to be paid members of IBPSA-USA and to live or work in the Chicago area.  Voting for the board candidates is limited to members who live or work in the Chicago area.

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IBPSA-USA website
Our parent organization - the USA Regional Affiliate of IBPSA.

The IBPSA website
The parent organization of our parent ourganization.

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