Seattle's Good Neighbor Policy
The West Point wastewater treatment plant in Seattle sits on a spit of land jutting into Puget Sound. Close by is Discovery Park, a haven for nature lovers, located on a bluff above the...
Landfill Liners from Top to Bottom
Since EPA began requiring geomembrane liners in 1982, liner system components have multiplied rapidly. At the same time, there has been a movement toward relatively large, sophisticated,...
Pumping Oil, Treating Soil
Oil was discovered on hilltop land in Signal Hill, Calif., in 1921, setting off one of the most wild land rushes the state has ever seen. Some 70 years and 20,000 oil wells later, the...
Excavating, OSHA-Style
When the Occupational Safety and Health Administration implemented its new, tougher trenching guidelines in July 1990, the agency opened the door for inventive excavation techniques. Contractors...
ASCE Salary Survey 1991
The 21st biennial ASCE salary survey of the engineering profession conducted by the ASCE Committee on Employment Conditions during the first half of 1991 is presented. It consists of an...
Freudenthal Lecture Developments in Structural Reliability
Rather than reviewing the details of developments in structural reliability theory and its implementation over the last few decades, more recent and more relevant reliability issues are...
Reliability of Large Technological Systems
Codes and regulations regarding large technological systems of growing complexity should take into account the increasingly sophisticated analysis tools that have been and are being developed...
Man and Huge System Interaction
In many cases of disaster, the causes of failure of huge systems are frequently attributed to human error. However human is liable to error. To exclude human factor from a huge system...
Probabilistic Assessment of Wind Loading For Structural Analysis
Records of extreme annual gust velocities from 11 weather stations in central-southern Brazil, classified according to orientation (octants) and type of storm (TS and EPS winds), result...
Wind-Induced Response of Torsionally Coupled Buildings
This paper summarizes the results of a comprehensive three-dimensional dynamic analysis of tall buildings subjected to fluctuating wind forces. Random vibration theory is used to relate...
Reliability Analysis in Estimating Turbulent Wind Force on Offshore Structures
This paper presents the results of a reliability analysis carried out to estimate low frequency turbulent wind drag force (including extreme values) acting on a floating offshore structure....
Identification of Critical Load Distributions for Wind Loading
For practical application as well as for sophisticated investigations, the time dependent stochastic wind process has to be simplified in terms of input data to the calculation. Usually,...
Optimal Distribution of Tuned Mass Dampers in Wind-Sensitive Structures
Modern high-rise buildings are susceptible to excessive accelerations at the upper floors in wind storms due to flexibility and low damping. In order to keep acceleration levels below...
Buffeting Response of Bridges
The present study provides a theoretical analysis of the behavior of the response of long-span bridges to turbulent wind loads in the region of stable motion. The analysis is based on...
Reliability of Overhead Transmission Lines Subjected to Wind Action
The probability distribution of the strength of steel towers used in transmission lines, due to wind excitation, is evaluated on the basis of test results of 72 towers of various designs,...
Fully Nonlienar Models to Simulate Structural Response to Wind Loading
The paper summarizes some results of the analyses of two tall broadcasting towers, obtained by means of a specially developed numerical procedure taking into account all relevant nonlinear...
Safety Analysis of Steel Building Frames Under Dynamic Wind Loading
A method is presented for evaluating the lifetime risk of failure, in terms of probability of excessive inter-floor deflection, for a class of steel building frames subjected to dynamic...
Spectral Analysis and Fatigue Reliability Assessment for Offshore Structures
This paper presents a cumulative fatigue damage formulation in stochastic variable space using bilinear SN model and the Palmgren-Miner's rule for evaluating the fatigue reliability...
Response Surface Fitting in Offshore Structural Design
Failure probability estimation of complex offshore structures requires the modeling of the system behavior in terms of all uncertain parameters. This paper investigates the applicability...
Collision Risk Analysis Fixed Platform and Semisubmersible
This paper summarizes the North Sea experience pertaining to mooring line failures of conventional 8 and 12 anchor line systems. Mooring system calculations, experience and test results...
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