Category Indoor Air Quality

19
Aug
Donald B. Snell of LBFG E...
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The following press release was issued by the American Council for Accredited Certification (ACAC) in June 2015. Donald B. Snell has been awarded the Council-certified Indoor Environmental Consultant (CIEC) designation by the American Council for Accredited Certification (ACAC). This prestigious, board-awarded certification recognizes Snell’s knowledge and field experience in indoor environmental investigation and consulting. To

This is part 2 of 2. LBFG recently worked with a midwestern medical facility experiencing buildup of frost and ice in above-ceiling spaces and clerestories during winter months two years after construction. The frost/ice eventually melted, causing damage and leaking into occupied rooms below. LBFG discovered the causes to be an improperly designed air barrier

10
Jun
“The Iceman Cometh”:...
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This is part 1 of 2. The 1940’s play “The Iceman Cometh” examines the dangers of an illusory life. Fortunately, when it comes to building science, there’s no need to live under illusory pretensions about whether a building will fail or thrive. Florida-based Liberty Building Forensics Group® (LBFG), a leading building forensics firm that has

29
Apr
ACAC Benefits from Libert...
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Named to National Indoor Air Quality Certification Board Liberty Building Forensics Group® (LBFG) is pleased to announce that Senior PM Sean Fitzgerald has been accepted as a certifications board member for the American Council for Accredited Certification (ACAC). Fitzgerald is uniquely qualified for this prestigious position due to his extensive background working on some of

This is part 3 of 3. The solution to the clash between brand standards and regional best practices is threefold: 1) Design professionals and contractors need to assert that specific requirements for hotels in certain climates cannot be violated if hotels are to avoid mold and moisture problems. 2) The brand must accept that certain

17
Sep
Inherent Risks Associated...
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This is the seventeenth post in a series by J. David Odom (ASHRAE), Richard Scott (AIA/NCARB/LEED AP), and George H. DuBose (CGC). It was first published as a mini-monograph for NCARB (National Council of Architectural Registration Boards). The inherent risks associated with increased building exhaust as recommended in this LEED credit are numerous: It increases

3
Sep
Indoor Chemical & Po...
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This is the sixteenth post in a series by J. David Odom (ASHRAE), Richard Scott (AIA/NCARB/LEED AP), and George H. DuBose (CGC). It was first published as a mini-monograph for NCARB (National Council of Architectural Registration Boards). Intent: Minimize exposure of the building occupants to potentially hazardous particulates and chemical pollutants. Depending on the climate

6
Aug
Construction IAQ Manageme...
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This is the fourteenth post in a series by J. David Odom (ASHRAE), Richard Scott (AIA/NCARB/LEED AP), and George H. DuBose (CGC). It was first published as a mini-monograph for NCARB (National Council of Architectural Registration Boards). Intent: Reduce indoor air quality (IAQ) problems resulting from the construction/renovation process in order to help sustain the

23
Jul
The “Golden Rule...
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This is the thirteenth post in a series by J. David Odom (ASHRAE), Richard Scott (AIA/NCARB/LEED AP), and George H. DuBose (CGC). It was first published as a mini-monograph for NCARB (National Council of Architectural Registration Boards). The HVAC system that introduces ventilation air must also do so in a manner that properly dehumidifies the

This is the eleventh post in a series by J. David Odom (ASHRAE), Richard Scott (AIA/NCARB/LEED AP), and George H. DuBose (CGC). It was first published as a mini-monograph for NCARB (National Council of Architectural Registration Boards). Intent: Provide additional outdoor air ventilation to improve air quality for improved occupant comfort, well-being, and productivity. For

3
Apr
Overview of LEED Credits...
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This is the fifth post in a series by J. David Odom (ASHRAE), Richard Scott (AIA/NCARB/LEED AP), and George H. DuBose (CGC). It was first published as a mini-monograph for NCARB (National Council of Architectural Registration Boards). LEED Credit Number Description Issue Comments Sustainable Sites (SS) Credit 7.2 Heat Island Effect: Roof Option of installing

This is the third post in a series by J. David Odom (ASHRAE), Richard Scott (AIA/NCARB/LEED AP), and George H. DuBose (CGC). It was first published as a mini-monograph for NCARB (National Council of Architectural Registration Boards). After reviewing the designs of hundreds of new buildings over the past 20 years and observing the failures

12
Jun
Building Owners Beware: T...
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This post by Don Snell is part 1 of 2. It’s not uncommon for mid-rise buildings in warm, humid climates to have rooftop make-up air units to serve the ventilation and pressurization requirements in these buildings. What is uncommon is to unknowingly have the roof curbs of these make-up air units become a swimming pool-size

29
May
Building Science Approach...
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This post by Don Snell is the fourth in a series of four examining the relation of moisture building assessments and building science as a component to design, construction, and commissioning. Let’s discuss some building science approaches for controlling airflow pathways with mechanical closets, while achieving reasonable design solutions for space and functionality. Sealing a