Screaming Structures
As any designer of roller coasters will tell you, civil engineering principles put the thrills and screams into roller coasters. There are two basic differences between roller coaster...
Resilient Moduli of Soils
Laboratory Conditions
Historically, structural pavement design has been based on static testing techniques, such as the CBR. More recently, the profession has placed increased emphasis on repeated load testing...
Knowledge-Based Construction Project Planning
This paper describes CONSTRUCTION PLANEX as a prototype of a knowledge-based construction process planner. CONSTRUCTION PLANEX is a knowledge-based system that generates project plans...
The WMATA Resident Engineer and the METRO Construction Team
This paper discusses the organization, mission and functions of the Resident Engineer and the other construction elements of the Washington Metropolitan Area Transit Authority (WMATA)....
The Jet Set
The new maintenance hangar now nearing completion at Charlotte/Douglas International Airport has aluminum standing seam roofing. The unusual material was specified because every ounce...
Building Onto History
In a single design/build/renovation project, an Oklahoma City AE firm acquired new offices, provided new life for an abandoned historic church building and spearheaded redevelopment of...
Bells Under Bells
Chicago's newest office tower is supported on new bells that had to be constructed below existing belled caissons. Existing caisson foundations from a previous structure on...
Specifications for Masonry Structures
Building Code Requirements for Masonry Structures (ACI 530-88/ASCE 5-88) and Specifications for Masonry Structures (ACI 530.1-88/ASCE 6-88) (ACI 530.1-88/ASCE 6-88)
Copublished with the American Concrete Institute (ACI)
Classic Wood Structures
Wood has been used in a wide range of structural applications. When properly maintained, these structures can have a useful life from 50 years to several centuries. Thirty-seven unusual...
Beam-Supported Slabs Subject to Edge Loading
A model is presented which allows a designer to estimate stiffnesses required to provide a given critical buckling load in beam-supported slabs subjected to biaxial edge loading, such...
Spreadsheet Applications for Hydropower Developers and Operators
This paper will examine the role of spreadsheet analysis in all aspects of hydropower development. The structure of the presentation will be first to briefly present an overview of the...
Dam Safety Emergency Action Plans?A TVA-State Responsibility
The Federal Guidelines for Dam Safety requires each dam owner to prepare and maintain emergency action plans (EAP) for each of structure. These plans are necessary (1) to identify problems...
Rebuild of Ten Mile Intake Flume Structure for Electron Hydropower Project
In 1984 the Puget Sound Power and Light Company began a rebuild of what is popularly referred to as the 'world's crookedest railroad. ' The 'railroad'...
The Rehabilitation of Lake Harriet Dam
In 1984, the decision was made to rehabilitate the Lake Harriet Dam. The existing arch dam structure was encased with a rockfill buttress. The downstream buttress, which also acts as a...
Murray Hydro Project?Structural Design
This paper will summarize design criteria, parameters, methods of analysis, and other relevant data that were used in the design process of the structural features of the Murray powerhouse...
Design of Siphon Penstocks for Low Head Hydros
Siphon penstocks have been designed and constructed at Jim Falls and Winter, Wisconsin at existing dams. Both hydropower projects are located on the Chippewa River. The design of these...
Turbine Intake Modification for Fish Passage
This paper describes one solution the U. S. Army Corps of Engineers has found to improve juvenile fish guidance at Bonneville Second Powerhouse on the Columbia River. Juvenile fish passage...
Civil Design of Underground Hydro Power Projects
Various reasons exist for the development of underground schemes. Limited space at dam sites in deep and narrow river valleys makes it favourable to separate the power house from the dam...
Waterstop Technology?The Next Chapter
Water leakage through and around failed waterstops in concrete structures can cause serious flooding, damage to equipment, affect structural stability, and pose potential safety problems....
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