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Air Infiltration

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Seattle Heights

Seattle, WA

Project Contacts: Eric Olson

Seattle Heights is a 26 story, EIFS-clad condominium building with four levels of below-grade parking. Shorty after construction, occupants experienced water leakage, excessive air infiltration, and apparent mold growth. SGH...

Services:Building Enclosure Rehabilitation

Markets:Mixed-Use

Keywords:Air Infiltration, Condominium, Expert Testimony, Glass and Glazing, High Rise, Residential, Water Leakage, Waterproofing, Windows

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October 30, 2009

Air Barrier Systems: Design, Testing, and Impacts on Building Energy Use

By: Sean OBrien, Michael B. Waite

Abstract: Building owners, designers, and contractors are becoming increasingly aware of the effect of the building enclosure on energy use. With rare exception, however, green building rating systems, energy standards like ASHRAE 90.1, and...

Services:Building Enclosure Design

Keywords:Air Infiltration, Building Science, Energy (Energy Modeling, Energy Audits, Energy Commissioning)

March 30, 2009

Designing Building Envelopes: Tips, Tricks, and Lessons Learned

By: Peter Babaian, Emily Hopps, Brent Gabby

The combination of ever-increasing owner program requirements, focus on energy-efficient buildings, and expanded architectural design options makes building construction more complicated every day. Architectural features, use of multiple wall...

Services:Building Enclosure Design

Keywords:Air Infiltration, Energy (Energy Modeling, Energy Audits, Energy Commissioning), Thermal and Moisture Drive, Walls, Waterproofing

January 30, 2009

Whole Building Energy Analysis as a Sustainable Design Tool

By: Sean OBrien, Michael B. Waite

Buildings in the U.S. are responsible for nearly 50% of the total, nationwide energy consumption and approximately 35% of total CO2 emissions. Further, CO2 production from buildings is increasing at a greater rate than both industry and...

Services:Building Enclosure Design

Keywords:Air Infiltration, Building Science, Energy (Energy Modeling, Energy Audits, Energy Commissioning), Green / Sustainable Design

December 30, 2008

Moisture control design tips for hospitals and healthcare facilities. Specialty Buildings Column Series, Part 3 of 6

By: Sean OBrien

When discussing moisture-related problems in high-humidity buildings, natatoriums and museums typically come to mind as the most challenging building types. However, specific design requirements for temperature, relative humidity (RH), and air...

Services:Building Enclosure Design

Markets:Health Care

Keywords:Air Infiltration, Building Science, High-Performance/Advanced Enclosures, Moisture Control, Thermal and Moisture Drive

September 29, 2008

Window Performance Testing: What You Need to Know when Selecting Windows

By: Michael Louis, Brandon Buchberg

Whether you are selecting windows for a residential house or for a large commercial project, you need to know a few things before you make your selection. Do you know what you are really getting with a window having a particular performance...

Services:Building Enclosure Design

Keywords:Air Infiltration, Codes & Standards, Field Testing, Laboratory Testing and Analysis, Water Leakage, Windows

June 29, 2008

The Effects of Thermal Bridging at Interface Conditions

By: Sean OBrien, Paul E. Totten, Marcin Pazera

Thermal bridging in buildings can contribute to a multitude of problems, including, but not limited to, added energy use during heating and cooling seasons and interior surface condensation problems.|Thermal bridges are discontinuities in any...

Services:Building Enclosure Investigation

Keywords:Air Infiltration, Building Science, Roofing, Thermal and Moisture Drive, Walls

December 30, 2007

Air Barriers in High Interior RH Specialty Buildings: Considerations for Control of Moisture-Laden Air in Museums, Labs, and Natatoriums

By: Sean OBrien, Paul E. Totten

Air barriers in building enclosures are still not widely mandated by building codes in the United States. However, acceptance of incorporating air barriers into new building enclosures is growing within the building design and construction...

Services:Building Enclosure Design

Keywords:Air Infiltration, Building Science, High-Performance/Advanced Enclosures, Laboratory, Moisture Control, Museum, Natatorium

June 29, 2007

Curtain-Wall Problems: Tips on Fabrication, Construction and Testing

By: Derek McCowan, Michael Louis, Mark A. Brown

Glass-and-metal curtain walls can provide an attractive, durable and cost-effective cladding solution, but in many buildings, they are plagued with problems ranging from air and water leakage to falling trim covers. The first two articles in this...

Services:Building Enclosure Design

Keywords:Air Infiltration, Curtain Wall, Field Testing, Glass and Glazing, Laboratory Testing and Analysis, Walls, Water Leakage

May 30, 2007

Curtain-wall Designs: Consider Anchorage Conditions, Workmanship and Future Maintenance While Planning

By: Derek McCowan, Brown, Mark A., Michael Louis

Abstract: Glass-and-metal curtain walls can provide an attractive, durable and cost-effective cladding solution, but in many buildings, these wall systems are plagued with problems ranging from air and water leakage to falling trim covers. The...

Services:Building Enclosure Design

Keywords:Air Infiltration, Curtain Wall, Glass and Glazing, Walls, Water Leakage

April 29, 2007

Curtain-wall Cautions: How to Avoid Installation Problems

By: Derek McCowan, Michael Louis, Mark A. Brown

Exterior wall construction has evolved during the past century and a half. We have moved from massive masonry walls that support the floors of a building to slender walls that hang off the slabs. The heavy load-bearing masonry walls of the past...

Services:Building Enclosure Design

Keywords:Air Infiltration, Curtain Wall, Glass and Glazing, Walls, Water Leakage

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Simpson Gumpertz & Heger Inc. (SGH) is a national engineering firm that designs, investigates, and rehabilitates structures, building enclosures, and materials.

Our award-winning work encompasses building, energy, civil/infrastructure, and science/defense projects in the United States, Canada, and more than thirty additional countries.

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