Buckling of Cooling Towers
The main goal of this study is to provide a clearer basis for judging the succeding safety of wind-loaded cantilever hyperboloidal shells. New predictions for cooling tower buckling are...

Seismic Design of Steel Buildings
An approach for the ultimate limit state design of steel buildings against the credible severest earthquake is presented on the basis of energy concept. The safety of a structure is judged...

Safety Checking Formats for Limit States Design
The growing need for a unified approach to structural design for different construction materials and technologies is met by the limit states design approach. Several standards-writing...

Prediction of Seismic Response of Long-Period Structures
This paper describes the application of an analytical method for estimating structures at an intermediate distance from a fault; the method is based on fault dislocation and surface wave...

Three-Parameter Failure Criterion for Concrete
A general, three-dimensional failure criterion for plain concrete and mortar is proposed. This criterion is formulated in terms of the first and the third stress invariants of the stress...

Construction Risk: Multivariate Approach
Numerous mathematical decision models have been formulated in an attempt to analyze construction risk. Most such efforts have failed because of the limited scope of their objective functions....

Stationary and Transient Response Statistics
The covariance functions for the transient response of a linear MDOF-system due to stationary time limited exitation with an arbitrary frequency content are related directly to the covariance...

Mean of Autocorrelated Air Quality Measurements
The high degree of autocorrelation present among the observations in a continuous record of air quality has significant implications with respect to the estimation of the mean value of...

Slow Crack Growth in Cement Composites
The resistance to crack growth in mortar, concrete and fiber reinforced concrete was studied by testing double torsion and double cantilever speciments. R-curves (plots of strain energy...

Protecting the Environment During Construction
Present practice appears to indicate that nonpoint source pollution will be controlled most effectively by a combination of fitting the development to the particular site, reducing, if...

Impact of Gasoline Price on Transit Ridership in Fort Worth, Texas
The impact of gasoline price, gasoline supply, automobile ownership costs, and automobile operating costs on transit ridership is examined. Monthly data on transit ridership, gasoline...

Financial Analysis under Inflation in Construction
The stated value of main items in the financial reports of a construction company does not reflect correctly under inflation their actual value. This introduces a considerable difficulty...

Investigation of Concrete: PMC Composite
This paper presents the results of an experimental investigation on the behavior of concrete - Polymer Modified Concrete two-layered composite beams (PMC). Sixteen simply supported beam...

Concepts and Instruments for Improved Monitoring
It is shown that a good instrumentation strategy, based on reliable measurements of displacements and pressures, is necessary for monitoring the safety and the behavior of civil works...

Porous Pavement: Research, Development, and Demonstration
This paper discusses the U.S. Environmental Protection Agency's porous pavement research program along with the economies, advantages, potential applications, and status and...

Complete Triaxial Stress-Strain Curves for Concrete
A method to predict the ascending and the descending parts of stress-strain curve of concrete subjected to triaxial compressive stresses is presented. The proposed analytical stress-strain...

Estimates of Design Wind from Short Records
Wind speeds of various average return periods are estimated from the series of hourly mean wind speeds assumed independent. This hypothesis of independence is suggested by characteristics...

Buried Pipelines: Providing Flexibility at Structures
When differential settlements occur bmtween a structure and the connected buried piping, the pipe is subjected to longitudinal bending, and joints deflect. The length of the pipe section...

Limits for Practical Level-Basin Design
A previous solution for level basin design is expanded to cover a wider range of infiltration conditions. An analysis is performed to determine an approximate limit on basin length which...

Nitrification Kinetics and Its RBC Application
The surface reaction model for the mechanism of mass transfer-metabolism in the fixed-film nitrification process is investigated and discussed for the design of trickling filter systems...

 

 

 

 

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