Hydraulic and Scour Analysis for Muitiple Crossings of the Salt River, Phoenix, Arizona
Two new freeway systems currently being designed for the Phoenix metropolitan area, the East Papago Freeway and the Outer Loop Highway, will both cross the Salt River within a one mile...
Buckling of Variable Cross-Section Columns
An approximate solution for the problem of buckling of variable cross-section columns, loaded by variable axial force is given, for several boundary conditions. Both the cross-section...
Hysteresis Studies Including Post Buckling of Angle Web-Members for Truss-Type Girders
The paper presents analytical studies of the buckling capacities and hysteresis behavior of angle-web members of truss-type girders. The eccentricity between the loading point and the...
Stereolithography
Stereolithography is a three-dimensional printing process which produces accurate copies of CAD solid or surface models directly from CAD data. The process uses a moving laser beam, directed...
Estimating Velocity and Scour in River Bends
A one-dimensional, steady-state, stream tube model was used to simulate hydraulic characteristics at a cross section. This enabled computation of higher velocities on the outside and lower...
The Effects of Bank Protection on River Morphology
Revetment of bends with radius of curvature to width ratios (R/W) between 1.9 and 3.3 on Red River AR, and Sacramento River CA, does not cause the expected thalweg deepening and channel...
Computerized Bridge Coding for HEC-2 Applications on I.B.M. P.C.
A computer program for conversion of survey field notes directly into SB, BT, and GR cards with simultaneous cross-section plot is described. It was designed to simplify the coding of...
Considerations in the Design and Installation of Horizontally Drilled Pipeline River Crossings
The authors will present a review of directionally controlled horizontal drilling techniques for pipeline installation by describing the state-of-the-art of the process vis-a-vis subsurface...
Pipe Geometry and Pipeline Bridge Wind Oscillation
Static and modal analyses of two pipeline suspension bridges owned by American Natural Resources - the Patterson Loop Aerial Crossing (PLAC) with a span of 850 feet (259 meters) and the...
Caribou Mitigation in an Arctic Oilfield
The Kuparuk oilfield on the Arctic coastal plain of Alaska is in an area of traditional summer use by the Central Arctic Caribou Herd, who use it for calving, feeding, and insect relief....
Optimization: An Emerging Technology
The technology of formal, numerical structural optimization is neither mysterious nor complex. Software programs are now available for use by engineers who do not have detailed knowledge...
Effects of Shoulder Reductions on Highway Safety
In order to accomodate existing traffic and projected growth, it is essential that the most effective use be made of the limited right-of-way available for freeways. It is important to...
Back on a Full Speed Track
A $30 million rehabilitation project is transforming a Massachusetts rail line that shows its age and poor maintenance history. Rehabilitating the line from Bristol County, Mass. to Hyannis...
Parameter Optimization of Dynamic Routing Models
The methodology utilizes approximate cross-sectional properties represented by separate power functions for channel and floodplain, and a very efficient optimization algorithm for determining...
Routing Comparisons in Natural and Geometric Channels
A method of establishing composite geometric cross section shapes hydraulically similar to natural cross sections with flood plains is proposed. The method is based on the nondimensionalized...
Composite Columns?Design and Examples for Construction
The new German standard DIN 18806, part 1 gives the rules for the design of composite columns. The general method, taking into account all the inhomogeneties of the two materials steel...
Hydraulic Profile Computation Using CADD
The data preparation can also be performed by directly recording onto a computer tape the aerial survey cross section ground points and the field survey work. A computer program can then...
The Impact of the I-664 Bridge-Tunnel Crossing on Sedimentation
A sedimentation evaluation was made of the proposed I-664 Bridge-Tunnel complex across the James River, Virginia. This paper briefly describes the procedures used and the results obtained...
Rail and Road Traffic Continue During Bridge Modification
The crossing of Route 15 under the Bangor and Aroostook Railroad Bridge, Bangor, Maine had limited sight distance and marginal clearances. Maine Department of Transportation, therefore,...
Computer Aided Design of Reinforced Concrete
An interactive computer-aided design (CAD) program for the design of reinforced concrete members is herein described. The program, called ECPRS, designs reinforcement and performs all...
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