Optimal Grillage Layout for Given Natural Frequency
The problem of minimizing the volume of structural material of an elastic grillage subject to a prescribed value or the fundamental frequency of free transverse vibrations, is considered....

Communicating Project Costs to Staff
The need for more effective management of engineering, architectural, and planning organizations is becoming increasingly acute as our society becomes more sophisticated and complex. Part...

Simple Buckling Theory for Pressurized Cylinders
Energy distribution within the critical modes of a classical energy eigenvalue analysis for circular cylindrical seashells under external pressure shows that a significant contribution...

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...

Lawsuits Arising Out of Reconstruction
Liability judgements resulting out of negligence in the performance of highway design, construction or maintenance activities have continued to increase in the past decade, notwithstanding...

Transit Performance Evaluation Model
An analytical methodology, known as the Transit Performance Evaluation Model, has been extended and applied. The model is used to evaluate the effect on transit performance from short...

Static Plate Loading Tests on Overconsolidated Clay
Three in situ static plate loading tests carried out on a medium stiff, overconsolidated clay deposit are described and interpreted. In addition to the plate loading test results, the...

Dynamic Characteristics of Frame-Wall Systems
The first three natural frequencies and the corresponding mode shapes for fixed-base frame-wall systems are presented. The system is modelled as a continuum of uniform properties incorporating...

Accuracy Criteria in Diffusion Routing
An analysis of Muskingum diffusion model, in which routing parameters are calculated based on channel and grid characteristics, is carried out. Numerical experiments are performed to throw...

Cyclic Bending of Plates under Transverse Loading
The cyclic bending behavior of simply supported steel square plates under transverse loads is studied. Three cyclic conditions, the fixed deflection amplitude, and the fixed load amplitude...

Modeling Project Milestones: Dependent Activities
The current methods of project planning by network analyses and the assumed relationships between activity duration, cost, start date and risk elements are reviewed. The concept of modeling...

Laboratory Study of Oil Thickness on Water Waves
Using a system which follows the water surface, the local thickness of an oil layer on water waves has been measured in a laboratory wave channel for a range of wave lengths and oil layer...

Minimum Energy and Energy Dissipation Rate
The theory of minimum energy and the minimum rate of energy dissipation have been applied to flow around bluff bodies, stability of falling bodies, statics and dynamics of gas bubbles,...

Mathematical Model for Erodible Channels
A mathematical model for erodible channels is formulated, developed and tested with field data. A significant feature of the model is its ability to account for changes in both channel...

Revised Rainfall Frequency Analysis for Houston
A statistical analysis of rainfall data for four Houston area stations is presented. A similar analysis was performed on the same stations in 1961 by the U.S. Weather Bureau. Both methods...

Frictional Slip in Elasticity: An Example
In order to study various aspects of propagating slip zones with friction, the unbounded solid with a semi-infinite cut are considered. The solid is first compressed in a direction normal...

Rotating Biodisks Recarbonate Alkaline Wastewater
Lime addition to raw wastewater as an upgrading technique can significantly aid a rotating biological contactor (RBC) plant in producing effluents in compliance with federal discharge...

Finite Beams on Elastic Foundation with Restraints
A solution is presented of the differential equation of finite beams with elastic restraints, resting on a Winkler foundation in terms of the initial conditions at one end of the beam....

Stochastic Generation of Monthly Streamflows
Two streamflow generation models are used to generate monthly flows for Australian streams. In one model, seasonalities and periodicities in the monthly flows are removed and the resulting...

Underground Transit Station Construction in Japan
Technologies used in Japan for constructing underground stations for heavy-rail urban rapid transit systems are described. Two example projects have been chosen that illustrate different...

 

 

 

 

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