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A series of seminars on Achieving Seismic Performance using Bolted Connections took place in Hamilton, Auckland, Wellington and Christchurch in March 2013.
The seminars were presented by Robert E. Shaw, one of the worlds leading experts on seismic welded and bolted connections, the Chairman of the IIW Commission XV Design, Analysis and Fabrication of Welded Structures.
This seminar was a second part of the successful seminar series Achieving Seismic Performance in Steel Connections presented by the speaker in 2012. While the previous seminar addressed issues around seismic welding, the focus of this one was on structural bolting in seismic applications. More than 55 professionals attended the events.
Achieving satisfactory performance in bolted joints involves the selection and verification of bolting materials, appropriate joint design, proper installation and quality assurance.
It covered assessment, retrofitting and detailing of bolted connections in moment frame, braced frame and steel plate shear wall systems. The seminar addressed these aspects with reference to NZS 3404.1, AS/NZS 1252, AS 4100 and other related standards.
Robert Shaw presented numerous case studies from his consultancy work on numerous significant projects in the US and abroad related to both bolting and welding issues.
Problems commonly encountered in bolted connections at the installation stage and the significance of the proper lubrication, protection, and storage as well as inspection and tightening procedure of bolts were explained in details.
One of the seminars hot topics was the conformance of steel materials for structural bolting applications.
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First volume in the Water Power Development series from Emil Mosonyi dedicated to the design of low-head hydroelectric power plants.
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Published By: CRC Press; 4 edition (November 4, 2011)
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A review is presented of nondestructive test (NDT) methods for evaluating the condition of concrete and steel reinforcement in structures. Methods discussed include visual inspection, stresswave, nuclear, measurement of fluid transport properties, magnetic and electrical, infrared thermography, and ground-penetrating radar. The principle of each method is discussed and the typical instrumentation described. Testing procedures are summarized and the data analysis methods explained. The advantages and imitations of the methods are highlighted. This report concludes with a discussion of planning a NDT program. General information is provided for those faced with the task of evaluating the condition of a concrete structure and who are considering the applicability of NDT methods to aid in that evaluation.
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Article/eBook Full Name: Structural load modeling and combination for performance and safety evaluation
Author(s): Yi-Kwei Wen
Publish Date: 1990
ISBN: 978-0444881489
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In the past 25 years great strides have been made in the area of static stability and deformation analysis. The widespread availability of microcomputers has brought about considerable change in the computational aspects of slope stability analysis. Analyses can be done much more thoroughly, and, from the point of view of mechanics, more accurately than was possible without computers. Still, engineers performing slope stability analyses must have more than a computer program. They must have a thorough mastery of soil mechanics and soil strength, a solid understanding of the computer programs they use, and the ability and patience to test and judge the results of their analyses to avoid mistakes and misuse. Realistic analyses of deformations of slopes and embankments were not possible until about 25 years ago. They are possible now mainly because the finite-element method has been developed and adapted to these applications. The principal requirement for achieving reasonably accurate and useful results from these analyses is suitable representation of the stress-strain behavior of the soils involved. In the past 25 years the finite-element method has been used to analyze a large number of dams, as well as other embankments and slopes. The experience gained over this period of time provides a number of valuable lessons concerning the advantages and limitations of the finite-element method for use in practical engineering problems.
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A modern and very authoritative guide on the use of explosive for most of the most common usages in civil engineering, with particular emphasis on underground tunnelling/mining and quarrying.
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