New Roof for an Aging Temporary
The wartime temporary design of a 1942 industrial building justified use of green timber for its roof trusses and higher than usual allowable design stresses. Some 45 years later, a new...
High-Strength Concrete: Weighing the Benefits
Russell, Gebler and Whiting describe the properties of high-strength concretes, the current state of knowledge on freeze/thaw effects, and procedures for batching, mixing, transporting,...
Isolated Examples
The technology of seismic isolation, also known as base isolation, is being used to protect the contents and occupants of a building as well as its structure. Isolators are led-rubber...
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...
Tunnel Talk
Much talk in tunnel circles has centered on various methods of tunneling, especially the new Austrian tunneling method, or NATM. To be a true tunneling method it must provide a description...
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...
Downramping to Minimize Stranding of Salmonid Fry
The objective of this study was to develop a downramping regime for the Jackson Hydroelectric Project on the Sultan River in Washington that minimizes the stranding of juvenile salmon...
A Juvenile Fish Bypass Program at Columbia River Basin Projects
Hydroelectric development in the Pacific Northwest region has altered the natural flow of the Columbia River and its major tributary, the Snake River. This has proven to be detrimental...
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'...
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