 The purpose of this sites is to present Emerging Construction
Technologies that could produce a "High Impact" in the construction industry.
The technologies are divided into five areas: Civil, Mechanical,
Internet-based, Electrical, and Other.
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Post-tensioned Steel Structure
Welded steel Moment-Resisting Frames (MRFs) were long considered as one the most earthquake-resistant types of structures. Numerous factors have contributed to the growth of this market since the 1960s, especially in the Western United States were they were extensively used prior to the 1994 Northridge California earthquake. Four earthquakes in California and Japan (San Francisco, Kanto, Santa Barbara and Long Beach) during the first part of this century gave engineers confidence in this type of steel construction which enforced the engineering communities preference for this earthquake-resistant structural system. During these events, there were typically fewer problems observed in steel structures as compared with concrete and masonry buildings of similar size and scale. [
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