Life Cycle Assessment Software Now Free Download

The Athena Impact Estimator® (IE) is the most widely used North American life-cycle assessment tool made for designers that allows one to choose the structural system and specification. In order to significantly increase the user base of the IE within the architectural/engineering design community, the software is now offered free of charge. Visit http://calculatelca.com/software/impact-estimator/...

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Structure and Carbon: How Materials Affect the Climate

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How to Reuse a Floating Bridge

Seattle's 520 Floating Bridge The Washington State DOT has required that the design-build team for a new bridge must reuse or recycle the existing bridge in a sustainable way. An international design ideas competition has been born of this challenge. Favorite options for reusing the existing pontoons have included floating docks, breakwaters, and piers. It's likely that the winner of the ideas...

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Coal Waste Processors Sue EPA

Coal waste products, like flyash, have long been used as complimentary cementitious materials to improve strength and durability of concrete while reducing cement content and therefore the embodied carbon of concrete. Until recently, even the EPA has been supportive of the commercial use of such materials. Now the EPA is taking a second look at the heavy metal content in these byproducts. A final...

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Thermal Bridging in Concrete

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The Value of Structural Engineering to Sustainable Construction

Numerous rating schemes have been proposed to incentivize green design, but how well do these codes relate to the building structures. The Institution of Structural Engineers set out to identify which green codes, if any, successfully addressed structures. Their report, titled The Value of Structural Engineering to Sustainable Construction, takes a methodical look at provisions in eight main categories...

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