Probabilistic Concepts of Redundancy and Damage Tolerability for Structural Systems
Intermediate states of structural systems (prior to system collapse and after component loss) are focused herein. This area relates to important issues such as redundancy and damage tolerability....
Probabilistic Basis for Bridge Design Codes
There is a growing interest in the development of rational design criteria for bridges. The fundamental problem is evalution of the loads and load carrying capacity. However, load and...
Bridge Live Load Models
This paper describes the analysis of weigh-in-motion data and the conclusions drawn. Statistical distributions of the effects induced in typical bridges due to single vehicle events are...
Effect of the Uncertainty About the Fatigue Limit on Highway Bridge Reliability
Current fatigue design specifications for welded steel highway bridges subjected to high traffic volumes require the design to be capable of resisting high-cycle, long life conditions...
Chicago's Loop: A New Approach
Reconstruction of the Wells St. Viaduct cleaned up a dangerous area just north of Chicago's Loop by providing a structurally sound approach for CTW commuter trains and a column-free...
A Doubling Design: Rochester's Expanding Airport
Few projects offer greater design challenges or pose more critical construction complexities than a new air passenger terminal, especially when that new terminal must be built on land...
Unlocking Arena Gridlock
The Charlotte Coliseum features a $22 million reversible lane system, which provides easier access to and from 8,000 parking spaces. To improve access to the arena, a 3.6 mi road extension...
Selecting Preferred Routes for Highway Route Controlled Quantity Shipments of Radioactive Materials
The amount of spent nuclear fuel move in the U.S. in recent years has increased due to a number of government actions. One such action was the passage of the Nuclear Waste Policy Act which...
Environmental Permitting a Major Expressway Facility in Florida
As general consultant to the Tampa-Hillsborough County Expressway Authority, Howard, Needles, Tammen and Bergendoff (HNTB) was responsible for the environmental permitting required for...
Overview of Artificial Intelligence Applications in Transportation
The purpose of this document is to provide an overview of artificial intelligence technologies, especially expert systems, as they may relate to highway engineering and operations. Included...
Tri-County Based Travel Demand Forecasting Analyses in the Tampa Bay Area, State of Florida
This paper describes the application of the micro-computer compatible Florida Standard Urban Transportation Modeling Structure (Micro-FSUTMS) to estimate traffic volume for the purpose...
Microcomputer Applications in the Development of a Traffic Operations Control Center
There is a growing need for new methods to maximize highway transportation operations, and a growing set of tools for the engineer to use in this task. This report examines one specific...
A Knowledge-Based Approach to the Design of Highway Bridge Foundations
This paper discusses the development of a prototype expert system using a commercially available expert system shell. The system is to be used for the selection of highway bridge foundations....
Current Status and Future of the Highway Capacity Software
This paper discusses the current status of the Highway Capacity Software (HCS) and comments on its future, including its relations with other capacity software. Subjects covered include...
Implementation of HISAM/HISAFE Microcomputer Programs
The Federal Highway Administration had sponsored the development of two software packages called HISAM and HISAFE. HISAM primarily provides an alternative means to store related accident...
Guidelines for Micro-CADD Implementation - How You Can Do it Right the First Time
This paper discusses methods found to be useful in applying selected lower cost microcomputer-CADD systems in the civil engineering environment CAD is defined as Computer Aided Drafting...
California DOT CADD
Starting in 1983 the California Department of Transportation (Caltrans) embarked on a project to incorporate current computer technology into the project development process. Today the...
A Microcomputer Program for Roadway Lighting Design
LUMSIM is a knowledge-based design program that uses operator input data and design criteria to select the most economical lighting system. The initial input parameters include pavement...
Data Collection Using a Portable Computer and Digitizing Tablet
This paper describes a data collection system developed by the New Hampshire Technology Transfer Center. The key features of this data collection method are its ease of use, single step...
Knowledge Based Expert Systems for Post-Incident Freeway Traffic Control
A knowledge based expert system for rerouting traffic upstream of an accident or other capacity-reducing incident on a freeway network is developed and compared with results obtained using...
Return to search