April 29, 2006

Seismic forces in diaphragm design

By: Ronald Mayes, Kevin Moore, Eatherton, Matthew, Naguib, Wassim I, Sabelli, Rafael, Boardman, Tom

Abstract: The 1994 Northridge Earthquake offered several instances of diaphragms and their components performing inelastically and even causing partial collapse, most notably in parking garages. While diaphragm failures are not widespread, it is...

April 29, 2006

Implementation of Higher Performance Structural Systems in the United States

Abstract: The development of more recent structural systems that perform better than standard moment frames, braced frames and shear walls occurred with the introduction of base isolation (1970's and 1980's), energy dissipation devices (...

April 29, 2006

The Role of the NEHRP Provisions in Supporting Seismic Design Provisions in Building Codes and Standards

Abstract: For more than 20 years, the Building Seismic Safety Council, under the sponsorship of the Federal Emergency Management Agency, has developed, maintained and updated the National Earthquake Hazard Reduction Program Provisions for...

April 29, 2006

100 Years of Earthquake Engineering - Lessons Learned and Forgotten

By: John Meyer, Ronald Hamburger

Abstract: During the 100 years since the 1906 San Francisco earthquake engineers have learned to design buildings that will perform well in earthquakes and to do it with a reasonable level of confidence. However, through forgetting lessons...

April 29, 2006

ATC-58 Project Overview: Development of Next-Generation Guidelines for Performance-Based Seismic Design of Buildings

Abstract: Design procedures for seismic resistance contained in building codes are intended to enable buildings to provide acceptable levels of performance in earthquakes, but the procedures are not truly performance-based. These procedures...

March 30, 2006

Evaluation and Rehabilitation of Deteriorated Parking Structures: Part 2

Abstract: This article is the second of two that examine the types of deterioration found in parking structures and how to repair and mitigate that damage. The authors discuss repairing delaminated or spalled concrete over corroded reinforcement...

March 30, 2006

Reconstructing the Bernie King Pavilion

Abstract: A longstanding and excellent client called with a unique problem. The Metropolitan District Commission (MDC) was charged with maintaining the Bernie King Pavilion. Built in the late nineteenth century, the structure is an open pavilion...

February 27, 2006

Design tips for steel in low or moderate seismicity regions

Abstract: This paper provides tips to structural engineers who design buildings in regions of low or moderate seismicity. These tips are based primarily on the authors' experiences designing, peer reviewing, and investigating steel-framed...

January 30, 2006

Evaluation and Rehabilitation of Deteriorated Parking Structures: Part 1

Abstract: This article discusses the deterioration of older concrete parking structures, the type of testing available to determine the structure's condition, and how to estimate the future performance of repair and protection alternatives....

December 30, 2005

Performance of Thermoplastic Pipe Under Highway Vehicle Loading

By: Jesse Beaver, McGrath, Timothy J.

Abstract: DOTs are interested in developing guidelines for use of large diameter corrugated HDPE pipe buried under roadways with shallow fill, but this application has not been studied extensively. A pooled fund study consisting of full-scale...

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