All posts by Daniel Overbey

When Does the 2010 Indiana Energy Conservation Code Not Apply?

Green Building

When Does the 2010 Indiana Energy Conservation Code Not Apply?

It has been just over two years since Indiana adopted its new energy code, the 2010 Indiana Energy Conservation Code (IECC). During that time, a lot of rumors, inaccuracies, and confusion have emerged regarding the application of the code. The following is an attempt to clarify the issue using primary source materials. . In a nutshell: The 2012 IECC is mandatory statewide for Class 1 structures (commercial buildings and residential buildings with three or more dwelling units). For a definition of….

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2009 IECC vs 2010 IECC

Green Building

2009 IECC vs 2010 IECC

. In the State of Indiana, virtually all new construction projects involving Class 1 structures need to file with the Division of Fire and Building Safety. As part of the filing process, project teams must demonstrate that the new construction complies with the state’s energy code, the 2010 Indiana Energy Conservation Code (2010 IECC). Interestingly, the acronym for Indiana’s energy code is “IECC” – the same acronym adopted by the International Code Council for their International Energy Conservation Code. This has been a source of confusion….

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Do Green Roofs Provide Insulation Value?

Green Building

Do Green Roofs Provide Insulation Value?

How much additional insulation does a green roof provide? I posed this question to two green roof experts that I am working with on an upcoming project. Their responses were consistent and somewhat surprising. The short answer: NONE. Green roofs provide innumerous benefits including shading by foliage, retarding heat transfer by advection (transfer of heat or matter by the flow of a fluid), providing thermal mass effect, prompting evapotranspiration, increasing stormwater retention, and protecting waterproof roofing assemblies. However, a green….

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Defining the HERS Index

Green Building

Defining the HERS Index

The Home Energy Rating System (HERS) Index was established by the Residential Energy Services Network (RESNET), a California-based nonprofit, in 2006. In simple terms, the HERS Index compares a new home to a “reference home” of identical size that meets the minimum requirements of the 2006 International Energy Conservation Code (IECC). To calculate a home’s HERS Index, a rater inputs data about the house into one of four RESNET-accredited software programs. The reference home built to the minimum 2006 IECC requirements gets a score of….

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Can Washington Enforce a Federal Building Energy Code?

Green Building

Can Washington Enforce a Federal Building Energy Code?

I have recently received several questions related to a “federal building energy code” which requires States to adopt the 2010 version of ASHRAE Standard 90.1 by October 2013. I’ve also been asked if this supposed energy code relates to ARRA stimulus funding. This concept of a federal building energy code is a bit convoluted, but allow me to briefly explain some important aspects of this issue: Building regulations are a State issue. State and local governments are empowered to enact building….

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5 Things You Need to Know about LEED 2012

Green Building

5 Things You Need to Know about LEED 2012

With the third public comment period now closed, LEED 2012 is about to enter the next phase of its delivery process. Starting June 1, the balloting period officially beings. In the meantime, eligible parties should opt into the Members-Only Consensus Body and pore over the latest drafts of LEED 2012 in preparation for a vote this summer. . . As part of the LEED 2012 Regionalization Chapter Task Force for USGBC Indiana, I have spent a considerable amount of time….

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LEED 2012 Third Public Comment Now Open

Green Building

LEED 2012 Third Public Comment Now Open

Last week, USGBC announced the opening of the third public comment period for LEED 2012 via usgbc.org/leed2012. The comment period is open until March 20, 2012, and officially marks the beginning of the LEED 2012 program delivery process. This third draft of LEED 2012 – for which there are five seperate versions of the rating system – is focused on providing users with a globally applicable, simple-to-use, technically advanced system. The public can provide comments on any substantive changes made since the….

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Dawn of the Product Transparency Movement

Green Building

Dawn of the Product Transparency Movement

My passion for green building dates back 10 years. It was in 2002 when I first read Cradle-to-Cradle: Remaking the Way We Make Things by architect William McDonough and chemist Michael Braungart. As a young, impressionable architecture student at Ball State University, I found this book to be a major eye-opener. It was truly my “aha” moment. The ideological concepts defined by this book – such as eliminating the concept of waste (e.g., “waste equals food”) – were deeply moving….

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BIM Proving Instrumental for International Orangutan Center

Green Building

BIM Proving Instrumental for International Orangutan Center

Today, the Indianapolis Zoo officially unveiled the International Orangutan Center (IOC). There are plenty of great write-ups from the Indy media that describes the generalities of the project. For instance, here is an article from the Indianapolis Business Journal. There are various noteworthy “green” aspects to this project. Foremost of which is the core mission of the IOC – to provide a global center for orangutan awareness. In the past 100 years, the orangutan population has decreased by approximately 92% due to deforestation….

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Why Autodesk Killed Ecotect

Green Building

Why Autodesk Killed Ecotect

A large part of my job has always been energy modeling for new construction projects – especially LEED projects. I use the term “energy model” loosely because it encompasses so many different types of analysis (e.g. daylighting, electric lighting, thermal loads, energy performance, acoustical performance, water consumption, wind flow analysis). Specific inquiries will dictate what tools I may use for analysis (e.g. Radiance for daylighting, eQuest for energy performance). The project’s level of design development will also influence the depth….

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