Dispersion in Three Dimensions: Approximate Analytic Solutions
Solutions to three-dimensional convection dispersion equation under different boundary conditions are obtained by integrating the appropriate Green's functions. Two approximations...

New Flat Plate Turbulent Velocity Profiles
A new, simple equation describing the turbulent velocity profile over flat plates is developed by using the control volume statements of mass and momentum conservation. This expression...

Better Government—Can the Young Engineer Help Make it Happen?
With increasing repetition, decisions concerning complex engineering issues are being made along purely political lines. To counteract this trend, the engineer must actively become involved...

Des Moines Skywalk System
A method is proposed for estimating pedestrian traffic on a proposed skywalk system in Des Moines, Iowa. Factors that influence usage are identified. Two mathematical models are presented...

Prestandard Programs and United States System of Standards and Codes
A concise description of the United States system of codes and standards is given, with the objective of presenting highlights of the system of interest to the civil engineer and the introduction...

Pass Cavallo, Texas: Case Study of Tidal-Prism Capture
Pass Cavallo was until 1963 the only permanent inlet for the Matagorda Bay System, and has not been stabilized or protected in any way. In 1963, a deepdraft ship channel was constructed...

Protection of Pipelines Subject to Surcharge Loads
Surcharge loads from new fills, railroads, and structures often require design of reinforcement to increase the field supporting strength of existing sewers and storm drains. Pipelines...

Guideway Geometry for AGT Systems
A logical method of defining horizontal and vertical Automated Guideway Transit (AGT) guideway geometry is presented. Only geometric accelerations and jerk are considered, which are defined...

Turnkey Projects for Downtown People Movers
Los Angeles, Detroit, and Miami received proposals for construction of downtown people mover systems. The requests for bids contemplated turnkey type construction contracts. The multiplicity...

Bridge Structural Innovation: Firsthand Report
Some fundamental aspects of bridge structural innovation and economy are reviewed. Historical examples of bridge innovation are presented and examined broadly. The author cites some of...

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...

Traffic Signals at New and Rebuilt Intersections
The need for traffic signals at an intersection is generally determined by the application of the Manual on Uniform Traffic Control Devices (MUTCD) warrants. When the volume warrants are...

Safety Studies Related to RRR Projects
The Federal Highway Administration has several research efforts specifically aimed at determining the impact of the Resurfacing, Restoration, and Rehabilitation (RRR) Program and, in general,...

Hydrothermal Analysis of Lakes and Reservoirs
The impact of Hunter Rouse on the application of fluid mechanics to hydraulic engineering practice in the United States is reviewed. The development of physical and mathematical techniques...

Sediment Analyses for Urbanizing Watersheds
An analysis of channel modifications for Harding Ditch, the main drainage canal for two urbanizing watersheds near St. Louis, Missouri, required an estimate of depositional changes between...

Flexible Pavement Evaluation and Overlay Design
A rational method for flexible pavement evaluation and overlay design using the Dynaflect deflections is presented. Evaluation charts and design curves are based primarily on the results...

Anton Tedesko: Thin Shells and Esthetics
Rarely can historians attribute to one person the introduction into a society of a new and widely useful engineering idea. We have no difficulty, however, in attributing to one structural...

Preliminary Planning of Steel Roof Space Trusses
During the preliminary plan phase of designing a steel roof space truss, a number of parameters must be considered and evaluated. These include the geometry of the framing system, the...

Bed Characteristics in Alluvial Channel Bends
An approach to the description of the steady-state distributions of flow and bed characteristics in an alluvial channel bend is presented. The approach, which is based on a combination...

Beams Under Lateral Projectile Impact
The influence of transverse shear effects, rotary inertia and the boundary conditions on the dynamic behavior of rigid perfectly plastic beams subjected to projectile impact at midspan...

 

 

 

 

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