Civil and Environmental Engineering Commons^™

Factors Influencing Dehardening And Rehardening Of Forsythia X Intermedia Stems : Technical Paper, David Foster Hamilton

JTRP Technical Reports

No abstract provided.

Promotion Of Rooting In Root Cutting Propagation : Technical Paper, Robert E. Mcniel

JTRP Technical Reports

No abstract provided.

Thermally Insulated Test Road: State Road 26 Final Performance And Temperature Prediction Studies, James A. Horton

JTRP Technical Reports

No abstract provided.

The Nature Of The Past-Aggregate Interface : Interim Report, David Watson Hadley

JTRP Technical Reports

No abstract provided.

Computer Assisted Teaching Of Steel Design, Wendelin Henry Mueller Iii

Doctoral Dissertations

"A method for use in creating a university level course is presented. The specifics of each of the steps is given in general terms to allow its application to as many different topics as possible. This method is then specifically applied in the formation of a fundamental steel design course using the American Institute of Steel Construction Specification. The reasoning utilized in each phase of development is documented. A lecture style presentation complemented by a series of student oriented computer programs was chosen for use. The details of the course material in outline form is given along with the computer …

Probabilistic Models For Construction Estimating And Bidding, James E. Spooner

Doctoral Dissertations

"Two probabilistic models are offered as a means for quantitatively determining contingency in a lump-sum bid. The first model is based on the isolated project and requires subjective evaluation of probabilities associated with the individual elements of the estimate. Contingency is defined as a function of the standard deviation of project field costs. Procedures are developed to obtain the variance of the total field cost from three-value estimates of the primary quantities. The second model considers the business as a stochastic process with an initial risk reserve and a positive risk loading, and contingency in this model is a function …

The Hydraulics Of Waste Stabilization Ponds, Gary Z. Watters

Reports

The treatment efficiency of waste stabilization ponds depends primarily on the biological factors of type of waste and organic loading. However, the biological activity in a pond is greatly influenced by the environmental conditions of temperature, wind, sunlight, and the hydraulic flow patterns. In the past little attention has been given to the hydraulic characteristics of waste stabilization ponds such as the gross flow patterns within stabilization ponds as affected by the shape of the pond or lagoon, the presence of dead spaces, and positioning of inlets and outlets and the degree of density stratification. These hydraulic flow characteristics will …

The Great Salt Lake And Utah's Water Resources , Utah Water Research Laboratory

Reports

Introduction: It is appropriate to introduce these proceedings with a brief description of this history and objectives of the American Water Resources Association (AWRA). Quoting from a recent information borchure published by the AWRA, it is a non-profit, scientific organization that was incorporated in the State of Illinous in March, 1964, with headquarters in Urbana, Illinois. A major factor in the establishment of the AWRA was the need for an organization to encourage and foster interdisciplinary communication between professionals of diverse backgrounds working on all aspects of water resources problems. The principal objectives of AWRA are stated briefly as follows: …

Water Management Research In Arid And Sub-Humid Lands Of Less Developed Countries: Fifth Annual Progress Report, Utah State University

Reports

No abstract provided.

Model Study Of The Manifold To Be Used As A Component Of The Virginia Electric And Power Company, 1974 Extension Of Yorktown Power Station, Roland W. Jeppson, Calvin G. Clyde, Charles Kincaid

Reports

Introduction: This report describes the fabrication and laboratory testing of a 1/12 scale model of the 5 branch converging manifold to be installed as a component of the Virginia Electric and Power Company 1974 extension of the Yorktown power station. The design of the manifold (see Fig. 1) was supplied by Brown & Root, Inc. The geometry of Branch number 1 as shown on Fig. 1 was modified slightly from the original design after conferring with Browth & Root, Inc. in order to facilitate the fabrication of this branch of the model. In addition to the fabrication of the manifold …

Relationships Of Infiltration Characteristics To Parameters Describing The Hydraulic Properties Of Soils, Roland W. Jeppson

Reports

No abstract provided.

Limitations Of Some Finite Difference Methods In Solving The Strongly Nonlinear Equation Of Unsaturated Flow In Soils, Roland W. Jeppson

Reports

No abstract provided.

Optimizing Resistance Coefficients For Large Bed Element Streams, D. E. Overton, Harl E. Judd, C. W. Johnson

Reports

This is a report of a comparison of Darcy resistance coefficients calculafed for previously reported laboratory data and those calculated for large bed element streams. Large bed element (LBE) streams exist frequently in nature where rocks derived from valley walls or from channels cutting through ancient glacial or fluvial deposits are moved only under conditions of extreme flood. The height of bed elements is a significant part of the mean depth of flow. The stream gradients are high and are quite stable for all but the highest flows.

Effects Of Land Use On Water Quality: Summit Creek, Smithfield, Utah, David W. Meyers, E. Joe Middlebrooks, Donald B. Porcella

Reports

The effects of various land uses on water quality in Summit Creek were evaluated during the period beginning March 13, 1971, and ending October 27, 1971. Potential sources of pollution investigated where: (1) septic tank use, (2) feedlot runoff, (3) urban runoff, (4) rural runoff. Samples were collected from five sampling stations on 16 separate days during the sampling period. Analyses were performed to determine the following constituents: ammonia, nitrite, nitrate, total phosphorus, orthophosphate, coliform bacteria, chloride, suspended solids, volatile suspended solids, total carbon, organic carbon, temperature, and pH. Agricultural activates, including livestock feedlot operations, were identified as the major …

A National Survey Of Manpower Utilization And Future Needs Of Consulting Engineering Firms Engaged In Water Pollution Control, E. Joe Middlebrooks

Reports

Introduction: As part of the overall evaluation of manpower needs in the environmental field, a survey of architectural and engineering firms was jointly sponsored by the Consulting Engineers Council, the American Association of Professors in Sanitary Engineering and the Environmental Protection Agency. A questionnaire was mailed to 8,.5. engineering and architectural firms that subscribe to the magazine

Development Of Regional Supply Functions And A Least-Cost Model For Allocating Water Resources In Utah: A Parametric Linear Programming Approach, Alton B. King, Jay C. Andersen, Calvin G. Clyde, Daniel H. Hoggan

Reports

The development and allocation of the water resourcse within a state require water planners to prepare plans far in advance of the actual time new facilities are required. It is not easy to identify and evaluate all the possible alternatives for providing water which incorporate broad objectives such as economic efficiency, social welfare, regional development, recreation benefits, and conservation of environment. Water resources development entails the modification of a natural hydrologic system to better meet man's needs. The interrelationships among elements of the hydrologic system to better meet man's needs. The interrelationships among elements of the hydrologic system are relatively …

Calibration Of Parshall Flumes With Non-Standard Entrance Transitions, Cheng-Lung Chen, Calvin G. Clyde, Min-Shoung Chu, Chi-Yuan Wei

Reports

The 9-ince and 18-inch Parshall flumes with the throat section installed level with the bottom of an incoming pipe were tested. The measured discharges for given flow depths (free flow) or differences in flow depths (submerged flow) were found to deviate quite significantly fromt he computed standard Parshall flume disharges at both low and high flow rates. New empirical formulats have been developed to take such deviations into account. It is noted that values of the coefficients and exponents contained in the new formulas depend on the throat size of the flume and the slope of the incoming pipe. Calibration …

Water Resources Planning To Satisfy Growing Demand In An Urbanizing Agricultural Region, Thomas C. Anderson

Reports

Although it is condeded that an adequate supply of water is essential to economic growth and development, what constitutes an "adequate" supply is often controversial and difficult to determine. The problem can be solved by applying basin economic concepts: determining the value of water be estimating its supply and demand. This report demonstrates one method for doing this. The theory of the demand for irrigation water and its empirical application are discussed. An example problem based on data from one of the sub-regions of the study area (the Jordan River Basin of Utah) is presented to illustrate the method. The …

Free Vibration Of Plates Stiffened By Parallel Ribs., Charles Edward Bacchus

Civil Engineering ETDs

A method is presented to obtain the natural frequencies and related mode shapes of certain types of stiffened plate systems. Dynamic stiffness matrices, based on ordinary assumptions in beam and plate theory, are derived to relate the displacements at the edges of a system element to the edge forces. Both in-plane and transverse forces and displacements are considered. Compatibility and equilibrium conditions at the intersections of plate panels and stiffening elements are employed to derive the governing equations of the system.

For general systems, the result is a set of linear homogeneous algebraic equations which must be solved by trial-and-error. …

Current Mechanical Fastener Specifications And Test Procedure, John Fraczek

American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)

No abstract provided.

Pavement Roughness Measurement And Evaluation, Rolands L. Rizenbergs, James L. Burchett, Larry E. Davis

Kentucky Transportation Center Research Report

Vertical accelerations of a passenger in an automobile are automatically summed while traveling a section of road at 51.5 mph. A roughness index is obtained by summing the accelerations and dividing by the time elapsed during the test. The index is subjectively related to the riding quality of pavements. Continuity in measurements since 1957 has been preserved through correlations among successive vehicles involved and reference pavements.

In general, bituminous construction has yielded smoother-riding surfaces than concrete construction. No major improvements in construction were noted on bituminous pavements since 1962. The ride quality of concrete pavements, however, has improved on those …

Kentucky Pavement (Bituminous) Performance Evaluations And Design Studies, James H. Havens

Kentucky Transportation Center Research Report

No abstract provided.

Field Identification Of Soils And Aggregates For County Roads, D. G. Shurig, Jean E. Hittle

Indiana Local Technical Assistance Program (LTAP) Publications

The primary purpose of this bulletin is to provide instruction to Indiana county road personnel on rating the quality of soils and pit-run materials used in the construction and maintenance of county roads. A system of soil classification is presented which provides the county highway engineer, road supervisor and inspector alike, with a common language for identifying soil types, properties and problems.

Durability Of Traffic Paint On Portland Cement Concrete Pavements, Assaf S. Rahal

Kentucky Transportation Center Research Report

Performance of a series of transverse lines applied to a relatively new concrete pavement, utilizing primes and pretreatments, is reported. The report includes descriptions of the location of test lines and types of paint and pretreatments, performance histories, and analysis of results. Chlorinated rubber, epoxy, and urethane paints were the most durable. Neither pretreatment nor the use of primes significantly increased durability.

Tests On Puddle And Fillet Weld Connections, A. K. Dhalla, Teoman Peköz

CCFSS Library (1939 - present)

INTRODUCTION The purpose of the present investigation has been to study the behavior of symmetrically welded connections having different weld configurations. As shown in Fig. la, the specimens were fabricated by butting two plates (CP) which were connected by welding cover plates AB and CD on two sides of CP. The fabricator supplied different types of welded connection specimens, sketched in Figs. la to If. A total of 115 specimens were tested in tension under monotonically increasing static load. Basic variables considered in the design were: (a) thickness and the shape of the cover plates, and (b) weld size and …

Grooving Pavement Centerlines For Lane Demarcation, William M. Seymour

Kentucky Transportation Center Research Report

In late June 1969, the Kentucky Department of Highways contracted to have experimental, longitudinal centerline grooves, 15 feet long at 80-foot intervals, cut into both sets of dual lanes of a 2.7-mile portion of I 71 in Carroll County. When the centerline was painted in an otherwise normal way, the skip lines were alternately on grooved and ungrooved surfaces. The roadway was opened to traffic on July 15, 1969. An interim performance report contained detailed information on the test site, grooving procedures, groove configuration, initial striping efforts, and preliminary evaluations of the relative effectiveness of the grooved stripe. The purposes …

Operational Characteristics Of Lane Drops, Don L. Cornette

Kentucky Transportation Center Research Report

A lane drop is defined as a location on a highway where the number of lanes provided for through traffic decreases. For purposes of this study, the broad category of lane drops has been further subdivided into three specific classes: lane exits, lane splits, and lane terminations. These subdivisions are illustrated schematically in Figure 1. A lane exit refers to a location where the number of through lanes decreases at an interchange on a multilane roadway. A designation of lane split denotes a major fork of a multilane highway where the level of traffic service provided at the terminus of …

Measurement Of Currents In Lake Mead With The Deep Water Isotopic Current Analyzer (Dwica), J. J. Sartoris, D. A. Hoffman, Bureau Of Reclamation

Publications (WR)

In Nov 1967, a Deep Water Isotopic Current Analyzer (DWICA) was used to study current patterns in the Boulder Basin of Lake Mead to determine if low-quality water from Las Vegas Bay might enter the Southern Nevada Water Project intake on Saddle Island. Secondary objectives were to study the general current patterns in Boulder Basin and the effect of power discharges at Hoover Dam on these currents. Results of current measurements at 3 stations in Boulder Basin are given. Observations indicate a definite possibility that low-quality water from Las Vegas Bay might enter the water intake on Saddle Island. Current …

The Analysis And Behavior Of Thin-Steel Hyperbolic Paraboloid Shells, Peter Gergely, P. V. Banavalkar, J. E. Parker

CCFSS Library (1939 - present)

An extensive experimental and analytical investigation of thin-steel hyperbolic paraboloid (hypar) structures was carried out to provide design information. As a result of this work, empirical data is provided regarding the behavior of such structures and computer programs are presented for the analysis of thin steel hypar structures. Hyperbolic paraboloid structures possess a unique combination of structural and architectural properties; some of them are the following: 1) Due to the double curvature of the surface the internal stresses in the deck are generally low and the deflections are small. 2) Since a hypar surface can be generated by straight lines, …

Air Pollution Control Training In Colleges And Universities In The United States, Harold M. Cota

Civil and Environmental Engineering

A nationwide survey of air pollution control training efforts in the United States at colleges and universities was carried out for the S-ll Education and Training Committee, Air Pollution Control Association. Information from 91 schools having four year or graduate programs and five community colleges was received. Questions include type of course work, backgrounds of participating faculty and students, and eventual placement. At the present time about 70% of those in training are graduate students. It was found that most students taking initial employment in air pollution control activities had the M.S. degree. Recommendations for updating this information are made.