Soil Bulk Density Sampling for Neutron Gauge Calibration
The ASCE Task Committee on Neutron Gauge Calibration met in Logan, Utah in July 1992 to investigate the various methods of soil sampling, installation of access tubes, effect of various...

Local Water, Local Control
Governments throughout the world are trying to improve the performance of publicly-owned and operated irrigation districts by turning operation and management of the districts over to...

Case History: 100-Year Flood Event in San Francisco
San Francisco experienced a 100-year storm in the winter of 1981-2. This is a report of the flooding damage from this event and the actions that the City took to resolve the flooding problems....

Reclamation's Review of Operation and Maintenance Program
The U.S. Bureau of Reclamation (Reclamation) is responsible for protecting the Federal investment in over 300 water storage and conveyance facilities in the 17 Western States. Reclamation's...

Comparison of Two Methods of Screening Bridges for Scour
Scour evaluations were performed for large numbers of bridges in two separate studies in New York and New Jersey. The two studies used different screening methods for identifying high-priority...

Case Studies of Bridge Scour in Western New York
As part of the New York State Thruway Authority's bridge hydrologic/hydraulic evaluation program, 63 structures over 42 stream crossings in western New York were assessed for scour potential...

A Study of Lateral Bed Slopes Developed at Bend
A study was conducted to compare seven actual cross section profiles of Philip Bayou Realignment with the lateral bed slopes estimated from the model derived by Ikeda titled `Sediment...

Comparison of Theoretical and Historical Scour
As part of scour assessments at approximately 120 stream crossings on the New York State Thruway, subsurface investigations were performed at all structures and, in some instances, locations...

Scour Retrofit Case Studies for Arizona
Scour retrofit involves a coordinated analysis and joint determination of action by several engineering disciplines: typically, geotechnical, hydraulic and structural engineering. The...

Comparisons Between Experimental and Numerical Studies on Laminar Flow with Tracer Transport
In this paper we present an experimental and an accompanying numerical study of two- and three dimensional transient flow and tracer transport in complex flow systems at low Reynolds numbers....

Bridge Scour Evaluations in Washington State
Eighteen existing bridges were investigated for Washington State DOT as part of the FHWA National Scour Evaluation Program. Investigations included review of file information, site inspection,...

Microtunneling: Overview and Case Study
Microtunneling is defined in the United States as a remotely controlled, laser guided pipe jacking process, which does not require personnel entry. This paper describes the components...

Developing an Air Transportation Hub?A Planning and Analysis Process and its Application in Taiwan, R.O.C.
The Ministry of Transportation and Communications of the Republic of China in Taiwan wanted to know whether it was feasible and desirable to develop an air transport hub at Chiang Kai-shek...

Transport Planning for Hong Kong's Future Port Requirements
Hong Kong is currently the world's busiest container port. It regained the number one position from Singapore in July 1992 following a huge rise in annual throughput of 29% over the previous...

PMS Implementation: Guidelines and Lessons Learned
Pavement management has emerged throughout the 1980s as an accepted tool to assist engineers in planning their pavement rehabilitation needs. Boosted by the support of the Federal Government...

Modified Graphite Reference Electrodes
The primary aim of this research was to investigate the feasibility of developing an improved, more reproducible, reversible, and highly voltage invariant graphite reference half cell...

Design Implications for Concrete Pavements from LTPP Analyses
Among the original objectives of the Long-Term Pavement Performance (LTPP) study of the Strategic Highway Research Program (SHRP) were the evaluation of existing design methods for pavements,...

Finite Element Analysis of Slabs-on-Grade Using Higher Order Subgrade Soil Models
Incorporation of the two-parameter, Kerr and Zhemochkin-Sinitsyn-Shtaerman subgrade models into finite element code ILLI-SLAB is described. The two conventional idealizations, namely the...

Reflections on the New Systems Study Project
1993 marks the 25th anniversary of the New Systems Study Project. This project produced a report from President Johnson to the Congress entitled....

The Development of Public Transport Systems for Urban Areas and the Relation with People Movers
The development of new public transport concepts for urban areas has to be related to problems in this field. Therefore on the one hand in a systematic way an inventory is made of the...

 

 

 

 

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