Thursday, August 30, 2012

Disaster Resilience in Congress

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Disaster resilience has recently caught the attention of the United States Congress. Representatives Davis (R-KY) and Diaz-Balart (R-FL) introduced a bill proposing tax credits for resilient construction. The bill refers to the FORTIFIED program by the Insurance Institute for Business and Home Safety. In other action, the National Institute of Building Science recently provided testimony to the Congressional Transportation and Infrastructure Committee's Subcommittee on Economic Development. ...
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Wednesday, August 22, 2012

Like a Radiator: Thermal Bridging

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Some architectural gems have recently taken a lot of heat for loosing a lot of heat. Thermal bridging is a pervasive problem for all structures with monolithic slab cantilevering balconies. The authors of this article hosted at buildingscience.com have turned their infra-red camera's on Chicago's iconic Aqua tower. Beyond simply highlighting shortcomings, some more efficient alternatives are proposed. http://www.buildingscience.com/documents/insights/bsi062-thermal-bridges-redux/view Link...
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Sunday, August 19, 2012

Sustainable Infrastructure Update

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The recently revived Infrastructure Working Group (IWG) strives to engage the structural engineering community outside of building designers in an effort to disseminate the fundamental concepts of sustainability that are applicable to all types of structures. While the LEED rating system has pushed building designers to develop and apply their fundamental principles of sustainability, the lack of such a driver within the bridge, tunnel, dam, levee, and other industries has left a gap in the sustainability...
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Wednesday, August 15, 2012

10 Steps to Greener Concrete

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According to the World Business Council for Sustainable Development (WBCSD), “concrete is the most widely used material on earth, apart from water, with nearly three tons used annually for each man, woman, and child.” Most structural engineers are familiar with efficient design practices for working with concrete, but there are sustainable considerations that should also be taken into account....
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Saturday, August 11, 2012

Life Cycle Assessment

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The Life CycleAssessment (LCA) Group is working toward educating structural engineers on the meaning and professional application of LCA criteria, procedures, and measurements in order to make environmentally conscience decisions on the use of structural materials. Life cycle assessment (LCA) is a method of measuring the total environmental impact of a product or process, from acquisition of raw materials to end-of-life.  For structural materials, the life cycle generally includes extraction,...
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Wednesday, August 8, 2012

Thermal Breaks for Brick Shelf Angles

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The Brick Industry Association (BIA) has an article in their most recent issue of Brick in Architecture magazine which includes information and detailing of thermal breaks for brick shelf angles in veneer construction over cold-formed steel.   The link to the magazine: http://www.gobrick.com/Portals/25/docs/Publications/Brick%20In%20Architecture/BinA%2069-1%20Final%20PDF.pdf   The article begins on page 9; the section entitled “Thermal Design” begins near the...
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Friday, August 3, 2012

Carbon White Paper Coming Soon

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The committee’s Carbon Working Group white paper, "Structure and Carbon: How Materials Affect the Climate" will explore how carbon dioxide and other emissions contribute to climate change, how the manufacturing of the structural materials in buildings creates such emissions, and the ways that structural engineers can make changes in their current practice to reduce greenhouse gases.  In a nutshell, we aim to quantify the carbon footprint of structure, and provide tools for designers to...
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Wednesday, August 1, 2012

Gray to Green: How to Make Cleaner Concrete

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Sustainable concrete has captured the imagination of always provocative Popular Mechanics. A recent web article explores radical new ways to green concrete. Most structural engineers are well versed in supplemental cementitous materials like fly ash and blast furnace slag, but have you considered rice husks, sewage sludge, and geopolymers? The article also suggests using prcelain from recycled toilets for aggregate and hempcrete blocks as an alternate to CMU. Finally, a PM article wouldn't be complete...
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