Strong Diagonals
Exterior Diagonal Systems that carry both gravity and lateral loads in building structures � known as exodiagonals or diagrids � are increasingly being used worldwide to provide freedom...
Progressive Collapse
This chapter examines progressive collapse. Topics include current practice and integrity steel for loss of support of a lifting collar....
Up into the Sky
What is the future of the skyscraper? The events of September 11 have sparked numerous questions regarding the history and future of tall buildings in America, and before the World Trade...
Oklahoma City Aftermath
The explosion that ripped through the Alfred P. Murrah Federal Building in Oklahoma City shortly after nine a.m. on April 19 killed 168 people, injured more than 500 and damaged more than...
Second Order Irregular?Wave Generation in Flumes - Computation of Transfer Functions by an Asymptotic Summation Method
Recently the theory for second order irregular-wave generation (including superharmonics as well as subharmonics) has been rederived for a variety of different types of wave board motion....
Collapse Mechanism of Compacted Clayey and Silty Sands
The mechanism of wetting-induced collapse (hydrocompression) and the influence of fines ratios on compacted sandy soils are investigated. Various ratios of clay and silt are mixed with...
Progressive Failure of an Overtopped Embankment
The failure of an overtopped embankment is a problem of a very complicated nature. Concerned organizations are interested in information that can be used in future planning and development...
A Laboratory Procedure for Partial-Wetting Collapse Determination
Partial wetting results in partial collapse, which is linked to the reduction in soil suction caused by wetting. The laboratory procedure presented in this paper represents a modification...
Dynamic Response and Progressive Failure of Special Structures
This proceedings,
The Influence of the Viscosity on the Progressive Waves
In a stationary atmosphere, the free-surface progressive wave motion in a real fluid of uniform depth is analysed by using Navier-Stokes equation, and its mechanism is described in first-order...
Reliability Analysis of Offshore Structures Using the Virtual Distortion Method
This paper describes a new and efficient methodology for structural reliability analysis applicable to offshore jacket structures. The proposed methodology uses the Virtual Distortion...
Progressive Failure Probability of Soil Slopes Containing Geologic Anomalies
The variability in the redistribution of stress during sliding failure of a slope is first studied. Presence of a geologic anomaly is shown to affect the failure path pattern and likelihood...
Reliability of Redundant Structures Under Time Varying Loads
Time-variant system reliability methods under Poisson pulse load processes are presented. Direct simulations based on incremental truss analyses are also performed. Small displacement...
Collapsible Soils in the Antelope Valley�California
Soils subject to hydroconsolidation, commonly referred to as collapsible soils, have a potential to undergo significant volume reductions upon wetting, with or without additional loading...
Identification and Characterization of the Collapsing Alluvial Soils of the Western United States
Suggested procedures for the identification and characterization of the collapsing alluvial fan, mudflow and debris flow deposits of the arid and semi-arid parts of the western United...
State-of-the-Practice Mitigation Measures for Collapsible Soil Sites
Mitigative alternatives for collapsible soil sites are reviewed considering shallow, as well as deep, collapsible soil deposits. In the case of deep soil deposits the overburden pressures...
A Use of Geostatistics to Predict the Occurrence of Collapsing Soils
Collapse susceptible soils are those that are stable under load while they are dry, but undergo large decreases in volume virtually instantaneously, when they become wetted to near saturation...
Characterization of a Site Underlain by Deep Collapsing Soils
The geomorphic setting of a site underlain by an 80 ft (24 m) deep deposit of collapsing silty sand is described. The field and laboratory investigation completed to characterize the geotechnical...
U.S. Embassy In Moscow: A Structural Stalemate
The fate of the nearly finished American embassy in Moscow should be decided by next fall. In the meantime, it stands empty. On April 15, 1987, Congress made public a National Bureau of...
The Risk of Progressive Collapse of Single-Story Buildings in Severe Storms
The probability of severe damage and progressive collapse of single-story commercial, institutional and residential buildings is examined. Observations of actual damage and the results...
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