Open-Channel Flow Equations Revisited
Equations of continuity, momentum, and energy in integral form are formulated herein by integrating over the cross section the corresponding equations for a point and then transformed...

Optimal Plastic Design for Bending and Shear
In optimizing flexural systems (such as beams, frames, and grillages) of continuously varying cross section, most authors assume that the specific cost of the member is a function of the...

Large-Deflection Spatial Buckling of Thin-Walled Beams and Frames
The potential energy expression and the (14 by 14) stiffness matrix of a straight thin-walled beam element of open asymmetric cross section, subjected to initial axial force, initial bending...

Planning Criteria for Bikeways
The transportation planning process is examined including developing master plans and organization for planning and implementation. Guidelines are presented that help the professional...

Regime Equations and Tidal Inlets
Selected regime equations for stable channel cross-sectional areas are compared to an empirical relationship for stable tidal inlet areas. Using an equivalent steady discharge to represent...

Model for Sediment Transport Through an Estuary Cross Section

Lowest Natural Frequency of Clamped Parabolic Arcs
An analysis is made of finding the lowest natural frequency of a clamped parabolic arc with a variable section including the effect of the cross section and constant section....

Free-Vortex Theory Applied to Free Overfalls
When the flow from an open channel is discharged freely into the air, the depth at the brink can be often closely correlated with the flow rate. Free-vortex velocity distribution and curvature...

Expandable Tip Piling
The problems associated with the use of piles in low strength clay soils are well recognized and have been extensively studied. The purpose herein is to set forth a simple and economical...

Siphons: Some Scale-Effects in Models
A simple design of storm-overflow siphon for the city of Liverpool, England, has been tested in the laboratory at scales from 1/3 to 1/80. In this way, the effect of the absolute size...

Drag or Along-Wind Response of Slender Structures
Theoretical approaches to the evaluation of the response of slender structures in turbulent shear flow have been proposed by a number of researchers. There are, however, limited experimental...

Column-Plate Interaction in Flat Slab Structures
Investigations are made on the influence of column deformations on the stress distribution in flat slab structures, which are assembled from rectangular plates and columns with rectangular...

Galloping Oscillations of Prismatic Structures
Galloping oscillations can arise above a certain onset wind velocity with lateral force coefficient A1 > 0 (unstable cross sections) and also...

Effects of Irregular Wave Trains on Rubble-Mound Breakwaters
Results of model tests on a typical cross section of a rubble-mound breakwater are presented. The structure was protected against wave attack by a cover layer consisting of a double layer...

Seepage from Trenches through Nonhomogeneous Soils
Infiltration from shallow trenches of arbitrary cross-sectional shape and through a layer of nonhomogeneous soil was studied analytically. The soil layer is underlain by a bed of gravel...

Torsion of Bars of Regular Polygonal Cross Section
The present paper deals with an analytical solution of Saint Venant's problem in bars of regular polygonal shapes. Expressions for stresses and torsional constants are obtained in terms...

Multicell Curved Girder Model Studies
The behavior of a single two-span, three-cell plexiglass model is predicted by the Slope Deflection Fourier Series Technique. This analytical technique had previously been applied to only...

Seepage from Shallow Open Channel
An approximate Darcy solution is obtained for the two-dimensional seepage from an open channel which is placed upon a homogeneous, isotropic aquifer of relatively large depth. The linearized...

Failure Modes of Folded Sandwich Panel Roofs
Folded sandwich plate structures make effective light-weight roof structures capable of carrying relatively high loads. Two models were tested. The first had a span of 9.5 ft (2.90 m)...

Economical Design of Presstressed Plate Girder
The limit states design concept is employed. Relations expressing statical properties of the cross section; geometry of the system; and equilibrium, continuity, and strength-conditions...

 

 

 

 

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