Review Category : Articles

Discussions of cold and hot weather concrete procedures do not occur until the five-day forecast calls for extreme weather. At that point, everything becomes a rush.

Special concrete mixes, as required, need to be submitted for approval at the beginning of a project. Time is required to test and practice with different temperatures and dosages and to adjust the cocktail of admixtures that form the basis of high-performance concrete today.

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The built infrastructure is one of the largest contributors to various measures of environmental impacts, e.g., energy consumption and carbon dioxide (CO2) emissions. There is sustained momentum towards decreasing this impact. This momentum is consistent with the ASCE Code of Ethics which states, in part, that engineers “shall strive to comply with the principles of sustainable development in the performance of their professional duties.”

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Part 1: How to Select a Reinforced Concrete Floor System

Vibration analysis has become more commonplace in everyday practice. In office environments, the need for longer spans continues to increase. Open spaces, with minimal or no partitions and no filing cabinets, are becoming even more prevalent (typical electronic office), which translates to less damping to counteract vibrational effects. 

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Field Work Complements Classroom Learning

In the spring of 2016, a group of eight students completing their master’s degrees in structural engineering at Rensselaer Polytechnic Institute in Troy, New York, were led out of the classroom and into the great outdoors for a very atypical educational experience. After years of calculus and physics, it was time for a much-needed mental break, where textbooks and exams were set aside for tape measures and cameras.

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Part 2: Mitigate Ponding and Water Intrusion

The author’s company, a forensic engineering and architecture firm, has investigated hundreds of low-slope roof and exterior deck applications with water stains, ponding, framing damage, and structural collapse. The first article, Part 1: ¼ in 12 Design Slope and Water Drainage (STRUCTURE, August 2017), examined two building code parameters that contribute to low-slope roof and deck serviceability issues.

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Energy efficiency continues to weave itself into the expectation of building design. Building trades, including Mechanical, Electrical, Plumbing, and Structural Engineers, are having to modify their general practices. The new requirements of building codes, namely energy codes, are subsequently forcing age-old structural detailing into a new realm.

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