Effects of Perturbations on South Padre Island
The types, extents, and durations of perturbations affecting the ecological zones of South Padre Island are assessed. Emphasis is placed on providing the environmental documentation necessary...
The Review of the Comprehensive Survey of the Coastal Zone of China
The purpose of the survey is to provide basic data for coastal zone development of China. The scope of survey is a long narrow belt area alongshore. The contents of the survey include...
Modern and Historic Mapping of Tidal Marshlands of San Francisco Bay, California
In this work, studies were made of two marshland sites shown on the old maps that presently remain subject to tidal action. For each site, historic maps dating from the 1850's were accurately...
Geologic Review: A Successful Procedure for the Minimization of the Impact of Oil and Gas Exploration and Production on Louisiana Wetlands
An effective procedure to minimize the amount of wetlands impacted by oil and gas well access routes has been developed. The procedure consists of a stringent geologic review of every...
Federal Policies in Water Resources Planning
The adequacy of current federal policies and institutional arrangements for water resources planning is assessed. Conclusions and recommendations are presented in five key areas: (1) Water...
Engineering Surveying Manual
This manual is directed at the engineering manager who is responsible for planning and executing engineering projects which require the assistance of specialists in engineering surveying....
Bridging Twin Ports
The Major Richard I. Bong Memorial Bridge, part of U. S. Highway 2, connects harbors at Duluth, Minn. and Superior, Wisc. The new highway link was designed to relieve congestion on nearby...
Effects of Vehicles on Buried, High-Pressure Pipe
The mechanical effects of selected types of traffic on buried, high-pressure steel pipe are examined. Particularly considered is a section of the Colorado Interstate Gas (CIG) pipeline...
Survey of Computer Use in Hydraulics and Hydrology
The surveyed population consists of the 58 member firms of the Consulting Engineers Council of Colorado practicing in the area of water resources. 90 percent of these firms use computers...
Urban Stormwater Investigations by the U.S. Geological Survey
Urban stormwater hydrology studies in the U. S. Geological Survey are currently focused on compilation of national data bases containing flood-peak and short time-interval rainfall, discharge...
Exfiltration Trench Design as Part of a Stormwater Management Plan
The paper discusses a program structured to assist the design consultant or the agency reviewer by means of a menu driven format. A flood routing microcomputer program developed by the...
Automated Analysis of High Accident Locations
Identification of high accident locations and associated accident causative factors as well as determination and evaluation of appropriate remedial measures at these sites are continuing...
APM Configuration Concepts and Network Design
The simpler networks, along with several of the more complex variations, include the following: Single-Lane Shuttle, Single-Lane Shuttle with Bypass, Double-Lane Shuttle, Single-Lane Loop,...
Transport by Cable: Possibilities and Limits
Cable systems offer a high degree of passenger safety; they do not cause pollution and can, in a very flexible way, be adapted to the local conditions. They can be operated as reversible,...
Dynamic Simulation of a DPM Auto Intercept System
This paper reports on the application of the UMTA Station Simulation Model (USS), which incorporates a dynamic path-choice algorithm, to model the diversion of motorists to a downtown...
The H-Bahn, a Fully Automatic People Mover System
The H-Bahn suspended cabin system is the contribution of the Siemens - DUEWAG joint development venture towards solving the problem of economical public transportation. This track-bound...
City of Pittsburgh Horizontal Elevator Experience: A Unique Application
The City of Pittsburgh is developing a unique and innovative application of horizontal elevator technology for use as downtown people-movers. The paper reviews the horizontal elevator...
Avoiding Contractor Disputes During Project Design
The New Jersey Transit Corporation is in the second phase of a billion dollar rebuilding program of its rail system. The first phase, which featured electrification and signal system replacement,...
Analysis of Cracking of I79 Bridge at Neville Island
A large crack was discovered to form in a girder of the I-79 Glenfield Bridge over the back channel of the Ohio River near Pittsburgh on January 28, 1977. A section of the girder containing...
Investigation of Catastrophic Failure of a Premium-Alloy Railroad Rail
In November 1983 an Amtrak train derailed at a speed of 72 mph (115 kph) at Woodlawn, Texas (in the vicinity of Marshall, Texas), resulting in four fatalities and twenty-four serious injuries....
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