2020 AISC Seismic Provisions for Evaluation and Retrofit of Existing Structural Steel Buildings (ANSI/AISC 342-20)
The American Institute of Steel Construction invites comments on the current draft of a new standard that will apply to the retrofit of structural steel buildings subjected to seismic loading.
The document is available for public review until May 20, 2019.
The new standard, Seismic Provisions for Evaluation and Retrofit of Existing Structural Steel Buildings (AISC 342), is intended to be used in conjunction with ASCE/SEI 41, as a replacement to Chapter 9 of that document.
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At first glance, roads seem like the simplest possible geotechnical structures. However, analysis of these structures runs up against complexities related to the intense stresses experienced by road surfaces, their intense interaction with climate, and the complicated behavior of the materials used in road construction.
Modern mechanistic approaches to road design provide the tools capable of developing new technical solutions. However, use of these approaches requires deep understanding of the behavior of constituent materials and their interaction with water and heat which has recently been acquired thanks to advances in geotechnical engineering. The author comprehensively describes and explains these advances and their use in road engineering in the two-volume set Geotechnics of Roads, compiling information that had hitherto only been available in numerous research papers.
Geotechnics of Roads: Fundamentalspresents stresses and strains in road structures, water and heat migration within and between layers of road materials, and the effects of water on the strength and stiffness of those materials. It includes a deep analysis of soil compaction, one of the most important issues in road construction. Compaction accounts for only a small proportion of a construction budget but its effects on the long-term performance of a road are decisive. In addition, the book describes methodologies for nondestructive road evaluation including analysis of continuous compaction control, a powerful technique for real-time quality control of road structures.
This unique book will be of value to civil, structural and geotechnical engineers worldwide.
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Underground Engineering: Planning, Design, Construction and Operation of the Underground Space provides the author's vast experience as both an academic and practitioner. It covers Planning, Design, Construction and the Operation of Underground Structures. Targeted at young professionals, students and researchers new to the field, the book contains examples, illustrations and cases from diverse underground uses, from roads to disposal facilities. Sections cover the history of the field, upcoming challenges, the planning stage of the subsurface use, including financial planning and reliability forecasting, site investigation, instrumentation and modeling, construction techniques and challenges, and more.
Young professionals in this area will benefit from the updated and complete overview of Underground Engineering. Students will find the examples and cases particularly didactic. Richly illustrated, this book is an excellent resource for all involved in the development of the underground space.
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This book presents a simple analytical method based on the extended rod theory that allows the earthquake resistance of high-rise buildings to be easily and accurately evaluated at the preliminary design stage. It also includes practical software for applying the extended rod theory to the dynamic analysis of actual buildings and structures.
High-rise buildings in large cities, built on soft ground consisting of sedimentary rock, tend to have low natural frequency. If ground motion due to an earthquake occurs at distant hypocenters, the vibration wave can be propagated through several sedimentary layers and act on skyscrapers as a long-period ground motion, potentially producing a resonance phenomenon that can cause severe damage. Accordingly, there is a pressing need to gauge the earthquake resistance of existing skyscrapers and to improve their seismic performance.
This book was written by authors who have extensive experience in tall-building seismic design in Japan. The software included enables readers to perform dynamic calculations of skyscrapers’ resistance to vibrations. As such, it offers a valuable resource for practitioners and engineers, as well as students of civil engineering.
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The SAC/BD-97/02, Protocol for Fabrication, Inspection, Testing and Documentation of Beam-Column Connection Tests and Other Experimental Specimens, was funded by the Federal Emergency Management Agency (FEMA) and the California Office of Emergency Services (OES) and produced by the SAC Joint Venture (published 1997, 100 pages).
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