Optimum Design of Prestressed Concrete Tension Members
A systematic procedure is proposed for the design of prestressed concrete tensile members. The design criteria considered include maximum allowable compression, ultimate strength, safety...

Control of Water Pollution from Toxics: Southeast U. S.
A detailed review of the programs of eight southeastern states for the control of water pollution from toxic wastes is presented. The review examines water quality standards, effluent...

Volatilization of Organic Compounds from Streams
Mass-transfer coefficients for the volatilization of ethylene and propane were correlated with the hydraulic and geometric properties of seven streams, and predictive equations were developed....

Mechanics of Three-Dimensional Soil-Structure Interaction
A finite element procedure for the general problem of three-dimensional soil-structure interaction involving nonlinearities caused by material behavior, geometrical changes, and interface...

Ultimate Strength of Biaxially Loaded Composite Sections
A theory is developed for the non-linear or linear analysis of arbitrary composite sections subjected to biaxial loading. The accuracy of the theory is verified by comparison with known...

Movable-Bed Tidal Inlet Model
The effectiveness of movable-bed tidal inlet hydraulic models in predicting prototype behavior is evaluated by comparing the model predictions with the observations made in the prototype....

Control of Tall Building Under Earthquake Excitation
A method of analysis for tall buildings implemented by active control systems and excited by earthquake ground motions is proposed. The effectiveness of the active mass damper and the...

Predicting Phosphorus Levels in a Future Reservoir
The concentration of total phosphorus at spring turnover in a proposed flow-augmentation reservoir is predicted, with a steady-state and two dynamic models, for a wide, but representative,...

Activated Carbon: Sorption of DOC from Wastewater
Activated carbons were prepared from a lignocellulosic material (prune pits) by pyrolysis to 900°C, and then activation in CO2 at 900°C for activation...

Sediment Transport on Gentle Slope due to Waves
A criterion for initiation of sediment movement on a gentle slope is established by balancing the forces acting on a sediment particle lying on the slope. A relationship for the instantaneous...

H-Pile Heave: A Field Test
A field test was conducted to investigate the possibility of reduction in pile capacity and the potential for excessive settlements resulting from the heave of H-piles. The piles were...

Stayed Column with Initial Imperfection
The effect of an initial out-of-straightness on the buckling strength of a single-crossarm stayed column is investigated. A geometrical study of the stayed column is used to determine...

Nonlinear Analysis of R/C Structures in Practice
This paper addresses some of the questions facing the engineer who is charged with assessing the safety of concrete structures for which conventional linear analysis is deemed inadequate....

Real Time Simulation of Conductivity in River-Lake Systems
Conductivity is modeled in real time in a natural water system using the finite section method. Dispersion coefficients are estimated using methods available in the literature. Calibration...

One-Dimensional Dynamic Ground Response Analyses
The earthquake response analyses of six horizontally layered sites have been performed by means of the equivalent linear method of analysis and two non-linear methods using the method...

Unsteady Flow in China
This article summarizes some results of research on unsteady flow problems encountered in China. These results are in general little known to the world outside of China. The report is...

Slipforming of Reinforced Concrete Shield Building
The unique design and construction features of slipforming the heavily reinforced concrete cylindrical shield walls at the Satsop nuclear plant site are presented. It proved that, with...

Volume-Accuracy Relationship in Soil Moisture Sampling
The number of soil samples required to achieve a given level of accuracy of the mean value is directly proportional to the variance of the samples. Analysis of a set of soil samples of...

Application of Penman Equation Wind Function
The Penman equation for computing evapotranspiration is frequently applied as the basis of irrigation system design. It has seen widespread application when sufficient data are available...

In-Plane Stability of Parabolic Arches
Studies are reported of the response to uniformly distributed loading of parabolic arches of rise equal to a fourth of the span. Base conditions are both fixed and pinned. The distributed...

 

 

 

 

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