Shake It Up (Available in Structural Engineering Special Issue Only)
The California Department of Transportation (CALTRANS) has used structural lightweight concrete for more than 45 years in bridges across the state. Lightweight concrete�made with aggregates...
Long-Term Effects of Suspended Solids Loads on Constructed Wetland Performance
Discussion session summary....
Sky High
The increasing demand for personal communication services (PCS), such as digital cell phones and pagers, as well as digital television (DTV), has created new challenges for creating and...
The Invisible Infrastructure
Most developed countries have 50- to 100-year-old underground utility systems that carry far greater loads than their designs. They're difficult to repair or replace, yet...
Shake, Rattle and Hold (Available in Structural Engineering Special Issue Only)
In-situ lateral load tests of two bridge bents were conducted on Interstate 15 in Salt Lake City, Utah, to determine the strength and ductility of an existing concrete bridge and the improvements...
On Solid Ground (Available only in the Geoenvironmental Special Issue)
On four transportation projects in Portland, Ore., soil nails and micropiles are used as alternatives to conventional earth-retention and foundation systems. The use of soil nails and...
Seismic and Dynamic Analysis and Design Considerations for High Level Nuclear Waste Repositories
This committee report was created to fulfill two primary objectives: 1) to provide guidance for assessing and defining the dynamic loads that must be considered in the design of a repository...
Building Tension in Buffalo
The National Hockey League's Buffalo Sabres have a new home, topped with an unusual tension-braced domed roof. An ingenious combination of dome designs, the Marine Midland...
Design of Hydraulic Steel Structures
Technical Engineering and Design Guides, as adapted from the U.S. Army Corps of Engineers, No. 22 This manual prescribes guidance for designing hydraulic...
Wind Loads and Anchor Bolt Design for Petrochemical Facilities
Current codes and standards do not address many of the structures found in the petrochemical industry. Therefore, many engineers and companies involved in the industry have independently...
New Uses for Old Bridges
As historic bridges age, they are often rendered useless by modern load requirements and codes. Many had been abandoned or demolished. In 1991, however, the ISTEA created new provisions...
Degradation of Natural Building Stone
This proceedings,
Seismic Analysis and Design for Soil-Pile-Structure Interactions
Pile foundations are used extensively to support structures in seismic regions around the world. For years, geotechnical engineers have neglected to consider the interaction soil-pile...
Stabilizing the Stacks
Spenser White and Prentis designed a hybrid soil nailing system to ensure that a historic library on the Bryn Mawr, Pennsylvania, campus would not be damaged during adjacent construction...
Wind Endurance
Although property casualty insurance companies are interested in a building's resistance to intense winds, risk underwriters traditionally take into account few, if any, wind-performance...
Grand Gusset Failure
In May 1996, structural failure forced the closure of twin 850 ft long arched truss bridges, each carrying two lanes of interstate traffic over the Grand River, 30 mi east of Cleveland....
Guide to the Use of the Wind Load Provisions of ASCE 7-95
The objective of the Guide to the Use of the Wind Load Provisions of ASCE 7-95 is to provide guidance in the use of the wind load provisions set forth in ASCE Standard 7-95. The Guide...
Design
This chapter discusses guyed structure design. Topics include loadings and design restrictions; guy clearances; guy design; guy anchorage; connections; structural design of poles and H-frames;...
Examples
This section includes several examples that illustrate many of the concepts presented in this guide. The examples and load cases have been simplified and may not represent actual design...
Hydraulics of Subsurface Flow Constructed Wetlands
Resistance to flow through subsurface flow wetlands is described by Darcy's law or by Ergun's equation. Both representations are combined with the continuity...
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