Optimal Sizing of Width- and Depth-Constrained Trapezoidal Channels
Open-channels are often designed based on the assumption of uniform flow and normal depth. If a channel is to be lined with a nonerodible material, the dimensions of the channel can be...
Shake, Rattle and Map
Researchers at Stanford's Earthquake Engineering Institute are developing an innovative system that uses geographic information systems to predict earthquake damage. A case study shows...
Quake Proofing a Palace
A $36.5 million renovation of the California Palace of the Legion of Honor included a two-level underground expansion on a very sensitive site and the largest-ever seismic retrofit for...
Bad Vibrations
Insurance companies often hire engineers to investigate homeowner claims of damage caused by vibrations near a blast or construction site. But these engineers often lack the background...
Case Histories of Geophysics Applied to Civil Engineering and Public Policy
These case histories will be of interest to both civil engineers and geophysicists. They document the use of a variety of geophysical methods in support of civil engineering projects....
Base Isolation Gets Its Day in Court
After the 1989 Loma Prieta earthquake, the 1905 U.S. Court of Appeals and Post Office Building in San Francisco was closed. The owner, General Services Administration Pacific Rim Region,...
Engineering a Landslide
A slope failure in northwest Alabama has been stabilized using a system of grouted INSERT piles to provide load transfer across the failure surface of the slide. This system, referred...
Power Booster
With many utilities caught in a vise between semiobsolete facilities and demands for cleaner power, the $578 million Manchester Street repowering project is setting an example for an aging...
Now Showing in San Diego
This article is a roundup of three major infrastructure projects in the San Diego area. Each of these projects will be features in the technical tours portion of the ASCE conference in...
Earthquake-Induced Movements and Seismic Remediation of Existing Foundations and Abutments
This proceedings,
State of the Art
The structural engineering of San Francisco's new Museum of Modern Art offered many challenges to the engineer. The complexity of the building is both visually exciting and...
Seismic Isolation in Bridges
In the U.S., the use of seismic isolation in new bridge construction and retrofit projects has been growing as awareness of seismic risk has spread across the country since the 1971 San...
Aftershocks: The Legacy of Loma Prieta
It wasn't the fabled Big One--quite--but it came close enough. The Magnitude 7.1 Loma Prieta earthquake that struck just after 5:00 p.m. on October 17, 1989 killed 63 people...
Thermal Cycling of Thin and Thick Ply Composites
An experimental study was conducted to determine the effects of ply thickness in composite laminates on thermally induced cracking and changes in the coefficient of thermal expansion (CTE)....
Global Environmental Change: Geoengineering Technology
The `overview effect,' looking at the entire Planet Earth from space, has communicated the reality of the limited extent of our environment and its apparent fragility. Space continues...
The Challenge of Mining He-3 on the Lunar Surface: How All the Parts Fit Together
After the initial confirmation of the existence of He-3 on the lunar surface in 1985, there has been a flurry of activity both in the U.S. and abroad to find the best method of garnering...
Energy Analysis of High Temperature Lunar Manufacturing Processes
This paper presents an energy analysis methodology to optimize the power system requirements for high temperature manufacturing processes on the moon. Power requirement and power system's...
Effects of Dust and Thermal Cycling on Telescope Mirror Performance
In this study, 1 cm ? 1 cm square optical-grade aluminized glass mirrors were measured for maximum light reflectance and then the loss of reflectance due to the presence of different specific...
Lunar Oxygen Production - A Maturing Technology
Research on oxygen production from lunar rock and soil has made significant progress in the past two years. An extensive series of experiments on natural and synthetic analogs has concentrated...
Sintering Bricks on the Moon
Sintering of full-scale 'bricks' from lunar soil simulant materials can be accomplished by radiant heating to 1100?C for approximately 2 hours, followed by slow cooling. Small-scale precompaction...
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