Instant Jails
Prison planners are responding to the explosion in the prison population by stepping up construction of new jails. Because of the pressures imposed by court ordered deadlines, engineers,...
Pipe-lining a Pipeline
This core prestressed concrete cylinder pipe is now lining the inside of a major water supply tunnel in Alaska. Occasionally found in rock tunnels, or buried pipelines, large diameter,...
Milwaukee's Deep Tunnels�No Clone
Tunnel boring machines are excavating nearly 19 miles of tunnels 17-32 ft in diameter as part of Milwaukee's $1.9 billion upgrade of its sanitary sewage system. Laid out to...
Mini Hydro at the Hackett Mills Project
The project includes rehabilitation of a timber crib dam and the first use of a Right Angle Drive turbine in the United States to generate power from the 16 feet of head available at the...
Construction of Yellowtail Dam & Power Plant 63-65
The Yellowtail Unit of the Missouri River Basin project is located on the Bighorn River in south central Montana. The key feature of the unit is Yellowtail Dam which rises 525 ft. between...
Roller Compacted Concrete and Tunnel Boring Machines?Two Tools for Designers and Planners
Two tools that have come into use fairly recently are roller compacted concrete and tunnel boring machines. These new tools can significantly affect the ability to make new projects cost...
The Sand Bar Hydroelectric Project: A Case History
The Sand Bar project's major features include a reinforced concrete intake structure; 3. 5 miles of twelve foot diameter hard rock tunnel; a reinforced concrete powerhouse...
Power Development at Buffalo Bill Dam
Buffalo Bill Dam is on the Shoshone River in northwestern Wyoming near the city of Cody. The dam is a 325-foot-high concrete arch facility with a crest length of 200 feet. The dam was...
Hoover Dam Planning, Financing and Repayment
After the original conception of the 'Boulder Canyon Project,' and in the first stage of the work, complete designs and specifications were prepared for the dam,...
Hoover Dam Plus Fifty Years Equals El Cajon Dam
The completion of El Cajon arch dam on the fiftieth anniversary of the completion of Hoover Dam has given the opportunity to compare design and construction of two concrete arch dams constructed...
Changing Stability Criteria: Effect on Older Dams
Many of the dams on the Georgia Power Company system were designed and constructed in the early 1900's. Changes that have occurred in stability criteria since construction...
Rehabilitation of Victoria Dam
Rehabilitation of a 54-year old thin concrete arch-buttress dam was completed without interruption of power generation using pressure injection of an epoxy adhesive. This paper presents...
Innovations in Prestressed Concrete Structures
Prestressed concrete poles are probably the best choice for most transmission line structures. They have many advantages over structures made from other materials for both engineering...
Survey of Airport Pavement Distress in Cold Regions
The most common pavement problems were associated with non-traffic related phenomena and included pre-existing cracks reflecting through asphalt concrete overlay (in two years or less),...
Finite Element Modelling of Cold Regions Concreting
Finite element heat transfer computer programs are discussed in regard to their use in modelling cold weather concreting. The concrete material properties required for input to the finite...
Finite Element Analysis of Concrete Armor Units Subject to Wave Impact
Concrete armor units are commonly employed for the protection of shorelines and rubble structures. Their design is primarily based on hydrodynamic stability. However, their structural...
Optimal Design of Continuous Prestressed Concrete Girders
Design of continuous prestressed concrete girders with possibility of parabolically varying depth in each span is formulated in the form of a mathematical programming problem. The design...
A Microcomputer CAD System for Seismic Design of Regular Highway Bridges
A microcomputer program to implement the recent seismic design guidelines for highway bridges is described. The methodology was developed by the Applied Technology Council (ATC) and is...
Nonlinear Analysis of External Prestressed Bridges
Finite element formulations for analysis of the overall response of concrete bridge girders prestressed with external tendons is described. The analytical procedure includes several nonlinear...
Analysis of R/C Slab Under Turbine Missile Impact
Turbine missile impact on reinforced concrete barrier in nuclear reactor power plants is simulated using the finite element method. One of four full scale turbine missile impact tests...
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