Weighing the Options
A unique sludge pipeline replacement project in Colorado gave the engineers and the owner an opportunity to compare the merits of three different project delivery methods....
Carolina Crossing
The designers of a cable-stayed bridge across the Cooper River in South Carolina incorporated stringent seismic criteria to safeguard against potentially devasting earthquakes....
Corinthian Crossing
The mainland Greece will soon be linked to the Peloponese by one of the longest cable-stayed bridges in the world, the Rion-Antiron Bridge, which also happens to feature soil-enhancing...
Rapid Delivery
Facing nearly dry wells and a moratorium on development that was about to expire, a small town in the pacific Northwest, using the design/build delivery method, was able to quickly design...
Establishing Baselines For Pipeline Condition Master Planning
As our most of our cities approach complete built-out and much of our wastewater pipelines near the end of their design life, attention needs to be focused on retiring deteriorated first...
Uses and Limitations of Conventional Hydraulic Models in the Planning and Design of Storage Tunnels
The hydraulic design of storage tunnels requires special considerations relative to the design of conventional sewers. These issues include characterization and control of inflows, energy...
Freight Pipelines: Past, Present and Future
Freight pipelines are a set of time-honored methods to transport solids by underground pipelines, and the technology is improving. However, for intercity and interstate freight transport...
Non-Destructive Excavating Around Pipelines and Challenging Conditions
Hydrovac technology provides engineers and contractors with a unique solution for non-destructive excavating around sensitive buried lines. As a non-mechanical excavating method, it is...
Use of New Liner In Water Distribution System
For years there has been interest in rehabilitation of water distribution systems to provide quality drinking water and to reduce breaks in the water system service. Much work has been...
A Major Water Main Crossing of the Ohio River at Cincinnati
This presentation chronicles a major water main crossing of the Ohio River at Cincinnati. The project is of interest because it provides for the interstate sale of drinking water and technical...
An Aggressive I/I Abatement Program is Underway as Part of Vallejos Wet Weather Program
The Vallejo Sanitation and Flood Control District (VSFCD) is undertaking an aggressive pilot program to control wet weather flows and eliminate sanitary sewer overflows (SSOs) that are...
High-Performance Highway
Straightening and widening 118 mi (190 km) of state road 44 in northwest New Mexico in under three years required some innovative financing. Not only did the New Mexico State Highway and...
Making the Most of HPC
Developing high-performance concrete (HPC) was only the first step toward bringing a material with improved durability, strength, constructability, and mechanical properties to the bridge...
Out of the Way
The 0.9 mi (1.4 km) long Fort Washington Way was built in 1961 as a distributor for local downtown traffic. It quickly became a critical section of the region's Interstate...
Beltway Connection
The Woodrow Wilson Memorial Bridge carries the Capital Beltway (I-495) and a part of I-95�the main north�south interstate route on the East Coast�across the Potomac River south of Washington,...
Modeling of Inelastic Behavior of RC Structures under Seismic Loads
Proceedings of the U.S.?Japan Seminar on Post-Peak Behavior of Reinforced Concrete Structures Subjected to Seismic Loads: Recent Advances and Challenges on Analysis and Design, held in...
Redesigning the San Roque Dam
Engineers updated a 20-year-old design for the San Roque Dam in the Philippines to save time and money and improve the dam's ability to withstand earthquakes. The structure...
Seismic Design of Highway Bridges: Recommended Specifications
Under the AASHTO-sponsored National Cooperative Highway Research Program (NCHRP), a joint venture of the Applied Technology Council and the Multidisciplinary Center for Earthquake Engineering...
A Framework for Performance-Based Seismic Design
The following probabilistic framework for seismic performance assessment is presented as an effective foundation for the development of performance-based guidelines. It suggests a generic...
Update of Serviceability Design Considerations for Low-Rise Steel Buildings
In 1990, the American Institute of Steel Construction published Servicability Design Considerations for Low-Rise Buildings by James M. Fisher and Michael A. West. This document was published...
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