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Update: Bridge Scour
Nearly 500 bridges have failed because of hydraulic conditions�primarily scour�since 1950, but the collapse of the Route 90 bridge over Schoharie Creek in April 1987 focused national attention...

Rehabbing the U.S.
When it comes to protecting its $1.4 trillion investment in public-works infrastructure, the U.S. has been like a homeowner who puts off fixing a leak until the ceiling lands on his head....

Foundation Studies in a Fault Zone and a Steep Valley Slope
This paper presents two case histories which illustrate unique problems in defining the character of rock for support of structures. The first case study concerns a conventional building...

The Structural Curtain
Curtain walls are not standard off-the-shelf items. For major projects, they are almost always custom-designed. Typically, curtain walls are on the critical path of project and often account...

Ultimate Air Rights
The new 1 million sq ft office tower at 450 Lexington Ave. rises from available space between commuter railroad tracks, through the center of a renovated four-story post office and up...

Structural Aesthetics
When the design and construction of a building was the responsibility of a single individual, interaction between the aesthetics of architecture and the demands of structure did not exist...

GIS Plans Wastewater Future
When the Public Works Department began phase 3 construction on Albuquerque, N.M.'s current wastewater treatment plant in 1990, it was time to begin thinking about the next...

Civil Engineering Applications of Remote Sensing and Geographic Information Systems
This proceedings includes 41 of the papers presented at the Second National Specialty Conference on Civil Engineering Applications of Remote Sensing and Geographic Information Systems...

Computing in Civil Engineering and Symposium on Data Bases
This proceedings consists of the papers presented at the conference Computing in Civil Engineering and Symposium on Data Bases held in conjunction with A/E/C Systems '91 from May 6-8,...

Out of the Lab...and into the Field?
Materials experts know very little about concrete's basic structure. Now, though, engineers at a research center sponsored by the National Science Foundation are working on...

Earthquake Considerations in Design of the Los Angeles Metro
This paper discusses the earthquake design of the Los Angeles Metro. The design earthquake parameters are presented and discussed in light of the behavior of buried structures subjected...

Bridge Seismic Retrofit Prioritization
This paper describes a mathematical model developed to produce an index by which bridges in a network can be prioritized systematically for seismic retrofitting. The model incorporates...

Regional Risk Assessment of Environmental Contamination from Oil Pipelines
This paper presents a methodology for assessing the risk of environmental contamination from oil pipeline leaks due to earthquakes. Risk is measured both as volume of oil released and...

Seismic Hazard Along a Crude Oil Pipeline in the Event of an 1811-1812 Type New Madrid Earthquake
This paper presents an assessment of the seismic hazard that exists along a major crude oil pipeline (pipeline 22). An 1811-1812 type New Madrid earthquake with moment magnitude 8.2 is...

Aseismic Calculations for Transmission Towers
In this paper, mechanical models for long-span transmission line systems under elastic and gravitational restoring forces are established in three different directions; this continues...

Inventory and Seismic Loss Estimation of Portland Water/Sewer Systems GIS Application to Buried Pipelines
Portland, Oregon has been identified by USGS as one of the earthquake-prone areas, in which earthquake hazard mitigation is important. This project develops an efficient and realistic...

Modeling Path Effects in the Los Angeles Region
Path effects for seismic wave propagation within three-dimensional (3-D) basin structures are analyzed using a reciprocal source experiment. In this experiment, a numerical simulation...

GIS-Based Interactive and Graphic Computer System to Evaluate Seismic Risks on Water Delivery Networks
As interactive and graphic computer system to evaluate seismic risks of an arbitrary water delivery network is developed, based on G/S (geographic information system) software, ARC/INFO....

Earthquake Loss Estimation Modeling of the Seattle Water System Using a Deterministic Approach
This paper summarizes the project and resulting report entitled Earthquake Loss Estimation Modeling of the Seattle Water System (Ballantyne, 1990) conducted under funding from the United...

Wellington's Lifelines in Earthquake Project: An Outline of a Major Review
This paper outlines a project involving a major review of all lifelines including building services in the region of Wellington, New Zealand. A case study approach was used involving representatives...

 

 

 

 

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