scholarly journals Forensic Geo-Technical Engineering Case History

2005 ◽  
Vol 23 (2) ◽  
Author(s):  
D.S. Sax Saxena
Keyword(s):  
Case History ◽  
Geotechnical Engineering ◽  
Remedial Measures ◽  
Forensic Engineering ◽  
Performance Problems ◽  
And Performance ◽  
Judicial Scrutiny

The Specialty That Deals With Investigation Of Failures And Performance Problems In The Geotechnical Environment Is Known As Forensic Geotechnical Engineering. It Involves Scientific And Jurisprudence Related Investigations And Evaluation To Analyze The Causes Of Structural Distress That Originate From Geodomain. Forensics In The Geo-Domain Encompass An Extensive Array Of Topics With Specific Emphasis In Geotechnical Related Fields. Mostly, They Apply To Failures After They Occur. Such Analysis And The Evaluation Of Selected Remedial Measures, Along With Their Effectiveness And Economy, Are Normally Subjected To Judicial Scrutiny. A Case History Is Presented Where Forensic Engineering Was Effectively Utilized To Identify, Investigate, And Remediate The Problem As Well As Assist In Litigation.

scholarly journals Forensic Engineering Analysis Of Alleged Property Damage From Construction Vibrations

2010 ◽  
Vol 27 (2) ◽  
Author(s):  
D.S. Sax Saxena ◽  
Saxena Anu
Keyword(s):  
Case History ◽  
Construction Projects ◽  
Pile Driving ◽  
Engineering Analysis ◽  
Existing Buildings ◽  
Construction Methods ◽  
Forensic Engineering ◽  
Eye Examination ◽  
Florida Panhandle ◽  
Subsurface Treatment

The Influence Of Construction And Pile Driving Vibrations On Surrounding Buildings, Including Hospitals And Eye Examination Facilities, Sensitive Devices Such As Computers And Surgical Microscopes Or Electronic Machines, And People In The Urban Environment Is A Significant Consideration In Obtaining Project Approvals From Appropriate Agencies And Authorities. Implementation Of Construction Projects In Areas Adjacent To Existing Buildings (Aged, Historical, Residential, Commercial, Industrial, Medical Services, Or Electronic Services) Creates Additional Difficulties. Specialized Case History Is Presented Where Damage To Sensitive Structures From A Variety Of Vibratory Construction Methods Ranging From Pile Driving, Highway Construction, Rock Excavation And/Or Blasting, Was Considered. Twenty Homeowners From A Residential Subdivision In The Florida Panhandle, Claimed Damage Including Cracking To Their Properties During Construction Of Various Portions Of City Storm Water Treatment/Enhancement Project. It Was Also Alleged That During Excavation And Construction Of Drainage Structures, Especially Four Subsurface Treatment Vaults That Required Installation And Extraction Of Sheet Piles Using Vibratory Hammer, Stability Of The Nearby Residential Structures Was Endangered And Resulted In Movement/Cracking. Forensic Engineering Analysis Was Effectively Utilized To Identify, Investigate, And Remediate The Concerns As Well As Assist In Litigation And In Some Cases Avoidance. This Technical Paper Presents Some Legal Issues Related To Litigation, Mediation, And Resolution Involving Jurisprudence System And Introduces A Case History That Includes All Elements Of Forensic Engineering.

Governance monitors or market rebels? Heterogeneity in shareholder activism

2018 ◽  
Vol 17 (3) ◽  
pp. 281-310
Author(s):  
Richard A Benton ◽  
Jihae You
Keyword(s):  
Social Movement ◽  
Agency Theory ◽  
Contextual Factors ◽  
Target Selection ◽  
Agency Problems ◽  
Shareholder Activism ◽  
Target Firms ◽  
External Governance ◽  
Performance Problems ◽  
And Performance

Agency theory is the dominant theory of shareholder activism and argues that activist investors function as external governance monitors. Agency theory predicts that activist investors will tend to target firms who exhibit governance and performance problems. However, given limited resources and time, activist investors must often decide between selecting targets with particularly strong agency and performance problems and those where their activism efforts are most likely to succeed. Social movement scholars point out that, in social movement contexts, the corporate opportunity structure affects when and where activism is likely to arise. We draw on insights from social movement scholarship and agency theory to advance a theory of heterogeneity in shareholder activism. We argue that an activist’s access to power and resources shapes its target selection, particularly the activist’s preference for targeting firms with greater agency problems or where contextual factors favor chances of success. Whereas more powerful activists are able to wield their power as effective governance monitors against firms with substantial agency problems, less powerful activists must strategically select targets of opportunity by choosing firms where contextual factors improve their odds of success. We test these propositions using an innovative relational approach that can simultaneously incorporate firm traits, activist identities, and endogenous dynamics.

The Design, Installation, and Performance of a Berm-Supported Exploration Structure in the Beaufort Sea

1985 ◽  
Vol 107 (2) ◽  
pp. 188-194
Author(s):  
K. J. Hewitt ◽  
W. E. Berzins ◽  
J. P. Fitzpatrick ◽  
H. G. Hogeboom
Keyword(s):  
Case History ◽  
Beaufort Sea ◽  
Wave Loads ◽  
Extreme Temperatures ◽  
Related Activity ◽  
Design Considerations ◽  
Ice Conditions ◽  
Ice Loads ◽  
And Performance ◽  
Placement Technique

The design, installation, and performance of a berm-supported exploration structure in a dynamic ice environment is presented. Details are provided on design considerations which include horizontal ice loads, wave loads, seismic considerations, foundation characteristics and extreme temperatures. The development of specifications and installation techniques to account for these design concerns is presented. A case history is presented which includes a discussion of on-site modifications to the idealized placement technique, which were necessitated by extreme ice conditions. The success of this modified placement technique is confirmed through a review of the units performance during the drilling season, and the response of the structure to dynamic ice and drilling-related activity is examined.

Safety factors and limit states analysis in geotechnical engineering

1984 ◽  
Vol 21 (1) ◽  
pp. 1-7 ◽  
Author(s):  
G. G. Meyerhof
Keyword(s):  
Geotechnical Engineering ◽  
Stability Conditions ◽  
Safety Factors ◽  
Limit States ◽  
Resistance Factors ◽  
Performance Factors ◽  
Load Factors ◽  
Partial Safety Factors ◽  
And Performance ◽  
Earth Retaining Structures

This paper outlines the ultimate and serviceability limit states in geotechnical engineering analyses. The magnitude of customary total and suggested partial safety factors in earthworks, earth retaining structures, excavations, and foundations is discussed. On the basis of comparisons between these safety factors and using recommended load factors on various types of loading, including water pressures, common resistance factors on cohesion and friction of soils and performance factors can be established together with some additional modification factors for particular stability conditions. The serviceability limit states of foundations and structures are briefly discussed.

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