Engineering Commons^™

H & V News

Building Services Engineering

No abstract provided.

H & V News

Building Services Engineering

No abstract provided.

Behavior Of Joints Using Reinforced Polymer Concrete Under Seismic Loading, Ishac H. Kafrouni

Theses

This report describes the analysis and testing of two types of exterior beam-column joints conducted at New Jersey Institute of Technology. The testing program consisted of six beam column joints with varying strength cementing agents in the joint region: normal, high strength and polymer concrete. Half of the specimens contained 1.5 percent by volume of hooked end fibers. The study of the behavior of these beam column joints has indicated 2 cases of failures: a critical region in which the inelastic behavior was controlled by bending and, a critical region in which the inelastic behavior was controlled by high shear. …

H & V News

Building Services Engineering

No abstract provided.

H & V News

Building Services Engineering

No abstract provided.

H & V News

Building Services Engineering

No abstract provided.

Mass Transit Study, Jacksonville Community Council, Inc.

Jacksonville Community Council, Inc.

A study to determine if mass transit is a current need in Jacksonville. Includes current user needs, ridership patterns, fare structures, potential sources of financial support, transportation modes used elsewhere and existing city transportation policies. Identifies major problems and recommends development of a varied mass transit system. PALMM

H & V News

Building Services Engineering

No abstract provided.

Treatment Process Optimization At The Lee Hall Water Treatment Plant Newport News, Virginia, Marcy Granum Garnett

Civil & Environmental Engineering Theses & Dissertations

Various methods can be used in operating a water treatment plant. It is desirable to produce good quality water as efficiently and economically as possible. This study evaluates each phase of operation at the Newport News (Lee Hall} water treatment plant for overall efficiency.

This study begins by giving a detailed description of the Lee Hall water treatment plant. The description includes sources of water, a description of each treatment process, a plan view of the treatment plant, and a flow diagram of the treatment plant.

Based on the raw water data, flow rates, and the treatment plant characteristics, the …

Analysis And Stability Of Closed Surge Tanks, John Emory Fowler

Civil & Environmental Engineering Theses & Dissertations

The equations representing the water surface oscillations in a closed surge tank form a set of nonlinear ordinary differential equations when the system is considered as lumped. Because of the nonlinear terms present in the equations, a closed-form solution of the equations is not available. Several numerical methods ranging from single step methods to higher-order multi-step methods were used to find numerical solutions to the governing equations. As all the methods required a similar amount of CPU time, the degree of accuracy required would determine which numerical method should be used. The effect of various system parameters on the stability …

H & V News

Building Services Engineering

No abstract provided.

Shear Behavior Of Fibrous Reinforced Concrete Short Columns, Feraidoon K. Kashani

Theses

The objective of this investigation was to examine the shear behavior of axially loaded fibrous reinforced concrete short columns under double curvature bending. Eleven columns with modeled dimensions of 6 in. by 41/2 in. with only different fiber volume fraction V_f and shear span ratios were tested under double curvature bending.

The material properties of fibrous concrete is briefly discussed on how the addition of fibers benefits the concrete mix. The results of the compressive and tensile behavior of fibrous concrete is presented. The behavior of bending on reinforced fibrous concrete columns is also briefly discussed.

Previous investigation results, …

Behavior Of Composite Steel-Fibrous Concrete Beams, Avijit Mookerjee

Theses

This research thesis on composite steel-fibrous concrete is based on a series of beam tests conducted in the Structural and Concrete Laboratory of the New Jersey Institute of Technology.

In the first series of tests, two twenty-foot two-span continuous beams were tested. In the first beam, plain reinforced concrete was used in the construction of the composite beam. The second beam had 1.5% by volume of steel fibers in the concrete.

In the second series, four composite T-beams were tested. Two of the beams had 1% of steel fibers by volume. The other two beams were constructed using plain concrete. …

Behavior Of Channel-Shaped Reinforced Concrete Columns Under Combined Biaxial Bending And Compression, Dureseti Chidambarrao

Theses

The inelastic behavior of irregular shaped reinforced concrete columns has been a constant concern for a structural engineer, to design a safe and economic structure in modern buildings and bridge piers. The shape of the elements in a reinforced concrete structure may be used to optimize its structural strength, to make better use of the available space, to improve the aesthetic appearance of the structure, or to facilitate construction. Due to the locations of the columns, the shapes of the buildings and the nature of the applied loads, many columns are subject to combined biaxial bending and axial load.

Seven …

Failure Surface For L-Shaped Reinforced Concrete Short Columns, Mon-Chen Liu

Theses

Combined bending and axial compression for L-shaped reinforced concrete short columns is a common problem. But the present ACI Building Code (ACI 318-77), handbooks and texbooks pay no attention to this problem. A numerical analysis and computer program developed by Hsu fora reinforced concrete member subject to biaxial bending and axial load has been used Using this computer program, the interaction diagrams and failure surface were developed for L-shaped members under combined bending and axial compression. A comparison between theoretical and experimental results was included to examine the validity of failure surface.

Analysis And Tests [Of] L-Shaped Reinforced Concrete Column Under Combined Biaxial Bending And Axial Compression, Alaedin Majlesi

Theses

A total of five tests on biaxially loaded column specimens were conducted to investigate the complete behavior of load-deformation characteristics from zero load until failure. The specimens were tested under horizontal position with 60 ton hydrolic jack. Pin end was used for both ends to obtain higher accuracy of plotting curves.

Two specimens were tested with dial gages to obtain load-deflection curves and the other three specimens were tested with demec and strain gages to obtain load strain and moment-curvature curves. The strain gages were measured by weston bridge and deme-gages were measured by mechanical dial gage.

The above moment-curvature …

H & V News

Building Services Engineering

No abstract provided.

Evaluating The Design And Operation Of Irrigation Canals In Egypt, Amany El Kayal

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A computer simulation model for temperature data was developed in order to generate synthetic daily temperature. The model consists of two components: a deterministic component represented by a Fourier series fit, and a stochastic component represented by an autoregressive model. The simulation model was proven to be able to preserve the main statistics of the historical series.

The data generated by the above temperature model were used as an input to an irrigation water requirements simulation model. This model incorporates the probabilistic nature of these requirements. The irrigation system of Abo Raya area in Egypt was used to demonstrate the …

H & V News

Building Services Engineering

No abstract provided.

Evaluating The Effects Of Alum With Polyelectrolyte Coagulant Aids In Treatment Of Low Turbidity Waters, Kenneth John Stockwell

Civil & Environmental Engineering Theses & Dissertations

Potable water sources usually require treatment for removal of suspended organic and inorganic particles. Conventional treatment processes incorporate chemical coagulants for removal of these suspended particles. Alum is a widely used coagulant that can provide adequate removals of turbidity. However, high alum dosages are required for treatment of low turbidity waters producing a voluminous sludge that is difficult to dewater.

Recent Federal regulations have limited disposal options for chemical sludges. This has prompted a reevaluation of coagulants and their dosages with the goal of reducing the amount of sludge produced and improving the sludge handling characteristics necessary for ultimate disposal. …

Transient Two Dimensional Ground-Water Flow: A Comparison Of Computed And Analytical Results, Robert Jan Fennema

Civil & Environmental Engineering Theses & Dissertations

The exact analytical solution of the transient-flow equation is compared with the finite difference solution. The finite difference program, written by the author, uses an iterative alternating direction implicit procedure to solve the linearized partial differential equation. A second order accurate central difference method is employed to solve the equation in two dimensions.

Variable cell spacing to divide the physical domain, a weighting factor and a time acceleration function were used to investigate rate of convergence and accuracy of the numerical solution. The exact integral solution to the one-dimensional form of the flow equation i n radial coordinates is used …

H & V News

Building Services Engineering

No abstract provided.

H & V News

Building Services Engineering

No abstract provided.

Behavior Of Reinforced Fibrous Beam-Column Joints Under Cyclic Loads, Sitaram Mahadev

Theses

From exploratory research of reinforced fibrous concrete, it has been shown that fibrous concrete is potentially superior and less costly than the conventional reinforced concrete.

The testing program consisted of ten beam-column joints with half of these joints containing 1-1/2 percent hooked end fibers. The beam column joints were constructed with less hoops than a conventional seismic joint would have, according to design specifications of the American Concrete Institute Code (ACI 318-77). In studying the behavior of these beam-column joints, two loading cases were examined:

(1) critical regions whose inelastic behavior was controlled by bending, and

(2) critical regions whose …

Repetitive Load Deformation Of Cohesionless Soil, Rodney Lentz

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

No abstract provided.

Civil Engineering, Arthur Johnson, Guilford O. Fossum

UND Departmental Histories

This departmental history was written on the occasion of the UND Centennial in 1983.

Stability Analysis Of Closed Surge Tanks By Phase-Plane Method, Mostafa A. Sabbah

Civil & Environmental Engineering Theses & Dissertations

The governing equations describing water level oscillations in a closed surge tank with compressed air at the top of the tank are a set of nonlinear ordinary differential equations if the hydraulic system is analyzed as a lumped system. These oscillations are stable or unstable depending on the parameters of the plant and the type and magnitude of the disturbance.

The present available stability criterion has been developed by linearizing the governing equations and is, therefore, valid only for small disturbances.

In the research reported herein, the governing equations are normalized to reduce the number of parameters from nine to …

Mechanical Properties Of High Strength Sheet Steels, M. Brad Parks

Masters Theses

"In recent years fuel economy has become one of the major criteria for the design of automobiles. In order to improve the efficiency of their vehicles many automotive designers are substituting high strength sheet steels for traditional materials of lower strength. This thesis discusses experimental work which was done to determine the representative mechanical properties and stress-strain relationships of a select group of high strength sheet steels with nominal yield strengths ranging from 80 to 140 ksi. The results show that high strength sheet steels are quite anisotropic with the variation in measured properties depending on the type of sheet …

Use Of Peats As Embankment Foundations : Interim Report, Harold Allen Gruen, C. W. Lovell

JTRP Technical Reports

No abstract provided.

An Investigation Of Contract Claims For Indiana Highway Construction Projects, Karen Denise Berg

JTRP Technical Reports

No abstract provided.