# Summary Report on Experimental Evaluation of Simulated Uncased Pipeline Crossings of Railroads and Highways

Kelvin's Solution of Torsion Problem

*Kelvin and Tait have shown that plate-like bars of thin rectangular cross section resist an applied torque by shearing stresses in two distinct ways. One-half of the torque is carried...*

Effects of Initial Curvature on Column Strength

*Herein the two types of initial curvature: initial curvature on maximum strength of columns of rectangular cross section, and initial curvature on the maximum strength of a column, are...*

Unconfined Aquifer Seepage by Capillary Flow Theory

*A numerical scheme is presented to analyze a two-dimensional unconfined aquifer of rectangular cross-section to determine the fall of the water table, the water content and the rate of...*

Distribution of Tractive Force in Open Channels

*The designs of alluvial channels by the tractive force method requires information on the distribution of wall shear stress over the wetted perimeter of the cross-section. The present...*

Unsteady Flow in Channel of Variable Cross Section

*Characteristic equations describing one-dimensional unsteady open-channel flow in an irregular channel are developed. The integration of these characteristic equations is presented and...*

Geometric and Frictional Effects on Sudden Releases

*The effects of resistance and channel cross-sectional geometry on the waves of sudden release are investigated. The analytical treatment follows Dressler's approach with the modification...*

Matrix Force Analysis of Thin-Walled Structures

*The Bernoulli's hypothesis of plane cross sections remaining perpendicular to the deformed center line does not adequately approximate the deformation due to the torsion of a long prismatic...*

Torsion Analysis of Heavy Box Beams in Structures

*Heavier box sections with thicker walls without the need of longitudinal stiffeners are widely used to resist combined torsion and bending loads in machines such as earth-moving and mining...*

Compression Tests on Hoop-Reinforced Concrete

*Forty-eight concrete prisms of square section were studied under monotonically increased axial compression up to maximum load. The two variables in the study concerned the provision of...*

Parametric Matrices of Some Structural Members

*The developments are described of local flexibility and stiffness matrices of straight-tapered members, circular members of constant cross section, and prismatic beams on Winkler-Type...*

Tapered Box Girders of Deformable Cross Section

*A general theory of torsion of tapered box girders of deformable cross section, its experimental substantiation, studies of the ultimate strength of box girders, and the use of the theory...*

Heated Discharge from Flume into Tank

*Information obtained in laboratory experiments is given on the physical processes producing temperature and velocity distributions when heated water is discharged from a channel into a...*

Research Programs on Pipeline Crossings

*A history and summary report concerning the activities of the American Society of Civil Engineers (ASCE) Research Council on Pipeline Crossings of Railroads and Highways is given. This...*

Analytical Plotter System

*The analytical plotter, model AP/C, is a highly precise photogrammetric instrument used as an investigating or engineering tool, or both. Civil engineers utilized the instrument in the...*

One-Dimensional Equations of Open-Channel Flow

*One-dimensional equations of continuity, momentum, and energy for unsteady, spatially varied flow in a fixed-bed open channel of arbitrary configuration are derived from the point forms...*

Hydraulic Properties of Small Unlined Rock Tunnels

*The factors influencing the hydraulic characteristics of small unlined tunnel cross-sections are presented. Investigations were carried out in rock tunnels constructed by the Helsinki...*

On the Concept of Mean Hydraulic Radius

*By using the hydrodynamic analogy between the torsion of a uniform bar with arbitrary cross-section and viscous flow through a channel of the same shape, the flow rate through any channel...*

Longitudinal Dispersion in Open Channels

*The effects of cross-sectional geometry and velocity distribution on the dispersion process in straight, uniform open channels with large width-to-depth ratio are investigated. The method...*

Sediment Measurement Techniques: A. Fluvial Sediment

*A description is given of modern techniques and equipment used to plan and make sedimentation measurements on natural streams. First typical examples are given of sedimentation characteristics...*

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