How to Find the Target EUI for the 2030 Challenge

Green Building

How to Find the Target EUI for the 2030 Challenge

Originally published on August 15, 2016 by BNP Media through the Architectural Roofing & Waterproofing Blog. The 2030 Challenge prompts building projects to meet a fossil fuel, GHG-emitting, energy consumption performance standard of 70% below the regional (or country) average/median for that building type. The metric for the 2030 Challenge is site Energy Use Intensity (EUI), not source EUI. But how can a design team quickly determine the appropriate EUI target for a project? Here are three easy ways. Read more…

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Lighting Impacts on Circadian Rhythms

Green Building

Lighting Impacts on Circadian Rhythms

Originally published on July 11, 2016 by BNP Media through the Architectural Roofing & Waterproofing Blog. With the emergence of human health concerns, wellness, and biophilia as priorities in the building design and construction industry, the lighting profession is shifting its focus toward circadian lighting design. Light is one of the main drivers of circadian rhythms – that is, our internal clock that keeps the body’s hormones and bodily processes on a diurnal cycle, even in continuous darkness. When the….

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Indiana’s First Net Zero Energy Building Certification is ‘Revealed’

Green Building

Indiana’s First Net Zero Energy Building Certification is ‘Revealed’

For over half a decade, the Chrisney Branch of the Lincoln Heritage Public Library has touted its intent of producing more electricity than it consumes (a term known as “Net Zero Energy”). However, it has always been difficult to substantiate the claim with stakeholders, patrons, and the general public. In order to reaffirm its commitment to environmental stewardship, Lincoln Heritage Public Library sought to formalize its claim that the Chrisney Branch is the first net-zero energy building in the State….

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Five Ecotect Functions that Need to Be Migrated to Revit

Green Building

Five Ecotect Functions that Need to Be Migrated to Revit

Originally published on May 18, 2016 by BNP Media through the Architectural Roofing & Waterproofing Blog. Eight years ago, Autodesk made a bold and decisive move toward prioritizing sustainable design tools when it acquired the assets of Square One Research, including their design performance modeling software Ecotect. To that point in time, Dr. Andrew Marsh had incrementally built the Ecotect platform into a light, versatile energy analysis tool. Its playful graphic outputs and high degree of interoperability made it a….

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The Difference Between Permeance and Permeability

Green Building

The Difference Between Permeance and Permeability

Originally published on April 18, 2016 by BNP Media through the Architectural Roofing & Waterproofing Blog. All information presented in imperial (I-P) units. Water vapor transmission is a rather confusing issue. The difference in vapor pressure between two sides of a building envelope assembly is the driving force behind vapor transmission. (Although by comparison, gaps in the envelope account for vastly greater amounts moisture migration due to vapor-laden air infiltration.) Vapor = Latent Heat; Air Temperature = Sensible Heat The….

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Building Performance Modeling Tools for Any Designer

Green Building

Building Performance Modeling Tools for Any Designer

  Originally published on April 4, 2016 by BNP Media through the Architectural Roofing & Waterproofing website. An adapted version of this column was featured in the Summer 2016 print issue of Architectural Roofing & Waterproofing magazine. The building design and construction industry is becoming ever more attuned to high-performance outcomes. Design teams and clients alike are becoming ever more sophisticated with regard to building science and energy conservation measures. Consequently, there is a growing expectation that project teams leverage….

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Really Old Buildings are Exempt from the Indiana Energy Code

Green Building

Really Old Buildings are Exempt from the Indiana Energy Code

My firm handles a good amount of preservation and reuse work. Energy-efficiency is always an issue (we make sure of that). However, there is a considerable amount of confusion about how the Indiana energy code applies to historic buildings and renovation projects. Let’s clear the air. Buildings built before January 21, 1978 are exempt from the Indiana Energy Code. There is no substitute for primary source material. Keep these links handy: Indiana Administrative Code (IAC) – Also known as the….

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Is Daylight Saving Time Necessary?

Green Building

Is Daylight Saving Time Necessary?

Originally published on March 7, 2016 by BNP Media through the Architectural Roofing & Waterproofing Blog. Spring Forward, Fall Back. We know the routine well, but have you ever wondered why the United States uses Daylight Saving Time (DST)? If you ask around, you’ll hear some interesting theories: …so kids don’t have to catch the school bus in the dark?      No. …to save energy?      Not really. …to benefit farmers by giving them an extra hour of daylight?….

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Defining Mass Walls through Heat Capacity

Green Building

Defining Mass Walls through Heat Capacity

Originally published on February 12, 2015 by BNP Media through the Architectural Roofing & Waterproofing Blog. There are significant differences in the prescriptive requirements of mass walls versus other above-grade walls. Using ASHRAE 90.1-2007 as example, above-grade walls for a steel-framed nonresidential building in Climate Zone 5 will need a minimum of R-13 insulation AND a continuous insulation layer of at least R-7.5. However, the building’s mass wall assemblies would only be required to exhibit a continuous layer of R-11.4….

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Standard Effective Temperature (SET) and Thermal Comfort

Green Building

Standard Effective Temperature (SET) and Thermal Comfort

Originally published on January 18, 2016 by BNP Media through the Architectural Roofing & Waterproofing Blog. Recently, the U.S. Green Building Council adopted three new pilot credits on resilient design for use by LEED project teams for innovation credit. One pilot credit in particular, Passive Survivability and Functionality During Emergencies, endeavors to ensure that buildings will maintain reasonable (i.e., “survivable”) functionality, including access to potable water, in the event of an extended power outage or loss of heating fuel. Power outages….

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