Engineering Commons^™

Erosion And Sedimentation In Utah: A Guide For Control, C. Earl Israelsen, Eugene K. Israelsen

Reports

No abstract provided.

New Concepts For Preliminary Hydropower Design: The Powermax Slope, Binary Turbine Sizing, And Static Regain, Frank W. Haws, Eugene K. Israelsen

Reports

In Utah during the 1960s, the cost of producing electrical energy was as much, or in some cases more, by hydroelectric generation than by plants using steam from coal fired boilers. The relatively high hydropower cost was generally attributed to maintenance and replacement costs associated with plants that had been build in the 1920s. Utah Power & Light Company during the 1960 period decided not to renew power licenses and to abandon many small hdyroplants. Since 1973, rising coal and related fossil fuel costs have caused steam generation costs to accelerate and have made hydroelectric generation relatively more attractive. However, …

Hydropower Potential At State Dam Logan River, Frank W. Haws

Reports

No abstract provided.

Sediment-Phosphorus Relationships In Deer Creek Reservoir, Jay J. Messer, Thomas B. Hardy, Jean M. Ihnat

Reports

Summary and Conclusions: Laboratory analyses of sediment samples recovered from Deer Creek Reservoir showed the sediments to have amoderate potential for serving as a source of phosphorus (P) for the overlying water solumn under anaerobic conditions. This source could account for the occurrence or exacerbation of blue-green algal blooms in the upper end of the reservoir when the sediment surface becomes anaerobic late in the summer. It could also delay the response of the reservoir to programs that decrease external P loading, if the upper end of the reservoir still has large enough algal blooms to render the sediment-water interface …

Abstracts Of Specialty Conference Papers; Delineation Of Landslide, Flash Flood And Debris Flow Hazards In Utah, B. Kaliser, M. K. Mccarter, R. Pack, J. Newman

Reports

No abstract provided.

Trihalomethane Compounds And Their Precursors In Salt Lake County: Evaluation Of Trihalomethane Source And Production, Kyle R. Cook, V. Dean Adams, Dennis B. George, Vincent A. Lamarra, Richard A. Hanson

Reports

Salt Lake County, Utah, watershed streams, drinking water treatment plants, and distribution systems were monitored for a period of one year or greater to determine the seasonal watershed precursor load, trihalomethane (THM) formation, and correlation between the two in the drinking water supplies. In addition, unit treatment processes were examined at Parleys, Big and Little Cottonwood water treatment plants, in the spring and late summer, to evaluate THM precursor reduction and THM formation. Additional studies were also conducted to appraise the potential contribution of natural sources to watershed THM precursor loading. Total organic carbon was used to estimate THM precursor …

A Groundwater Model Of Cache Valley, Utah, Calvin G. Clyde, Roland W. Jeppson, Win-Kai Liu

Reports

This report describes the development, calibration and use of quantitative, predictive management model for the groundwater in the Utah portion of the Cache Valley in northern Utah. The quasi-three-dimensional finite difference computer model was adapted from the U.S. Geological Survey’s Trescott and Larson model and simulates the groundwater levels and flows in the groundwater basin. The variable spacing grid system is 23 nodes x 38 x 2 and represents the complex natural system by a simpler approximation with one unconfined and one confined aquifer and the appropriate boundary and initial conditions. River nodes, spring nodes, and constant head nodes were …

Management Of Groundwater Recharge Areas In The Mouth Of Weber Canyon, Calvin G. Clyde, Christopher J. Duffy, Edward P. Fisk, Daniel H. Hoggan, David E. Hansen

Reports

Proper management of surface and groundwater resources is important for their prolonged and a beneficial use. Within the Weber Delta area there has existed a continual decline in the piezometric surface of the deep confined aquifer over the last 40 years. This decline ranges from approximately 20 feet along the eastern shore of the Great Salt Lake to 50 feet along in the vicinity of Hill Air Force Base. Declines in the piezometric surface are undesirable because of the increased well installation costs, increased pumping costs, decreased aquifer storage, increased risk of salt water intrusion, and the possibility of land …

Direct Filtration Versus Conventional Water Treatment In The Intermountain Region, Susan K. Burns, V. Dean Adams, Steel B. Maloney

Reports

The direct filtration water treatment scheme does not include sedimentation and in some cases flocculation. Compared to conventional treatment, direct filtration has lowered capital costs, reduced space requirements, decreased sludge quantities, and reduced coagulant dosages. One objective of this research was the statistical comparison of the direct filtration, Utah Valley Water Purification Plant (Orem, Utah) and the conventional Little Cottonwood Water Treatment Plant (Salt Lake City, Utah). These treatment plants are the two most compatible treatment plants having the highest correlation of source water in the local area. The Little Cottonwood plant receives approximately 65 percent of its sources water …

Use Of The Hewlett-Packard 9810 Calculator System In Water Quality Analysis, Jerald S. Fifield

Reports

Introduction: It is the purpose of this manual to illustrate the utilization of the Hewlett-Packard, Model 9810A calculator for analyzing water quality data. Familiarization of each program's capabilities is essential for successful application, thus the user should read over the section used before beginning. Each section is complete with instructions and illustrative examples.

Review And Evaluation Of The Gibson Dome High Level Nuclear Waste Repository Environmental Assessment: Geohydrologic Issues, Christopher J. Duffy, Brad Hall

Reports

Introduction: Background/Authorization: This report is meant to provide a technical review and evaluation of Department of Energy documents concerning groundwater, radionuclide travel time and monitoring issues relative to siting a high level nuclear waste repository in the Gibson Dome area in Southern Utah. in so doing we have, during a relatively short period of time, examined in detail the Department of Energy Guidelines concerning high level nuclear waste disposal (1983) including revisions (1984), and each draft of the Environmental Assessments for Davis and Lavender Canyon, up to and including the fifth draft (dated July 27, 1984). In addition, a large …

Summary Report: Updating The Estimation Of Water Surface Elevation Probabilities And Associated Damages For Great Salt Lake, L. Douglas James, David S. Bowles, D. George Chadwick, J. Paul Riley

Reports

Problem Statement: Rising levels of the Great Salt Lake are severely impacting private and public property. in the private sector, the mineral industry, the railroad, and a number of recreation enterprises are suffering major damages. In the publi sector, the State of Utah is esperiencing large losses inflicted on roads and highways, waterfowl and related wildlife areas, and park and recreation facilities. The lake is partitioned by a semipervious railroad causeway into a north and a south arm with the sourth arm having about twice the water surface area and usually being two or three feet higher because it receibes …

Testing Of Steel Roof Deck Construction, Wei-Wen Yu, Lan-Cheng Pan, S. H. Lin

CCFSS Library (1939 - present)

INTRODUCTION In recent years, insulated steel roof deck construction has been widely used in industrial and commercial buildings. The use of roof assembly consisting of 3-in. deep, 22-gage, steel deck is being considered by Rooftex, Inc. of Houston, Texas, for Class 1-60 and Class 1-90 assemblies. At the request of Rooftex, two types of tests were conducted at the University of Missouri-Rolla in July 1983. These tests, which consisted of physical tests of steel roof decks and uplift pressure tests of insulated steel roof deck construction, were conducted to obtain the"necessary data for the approval of the Factory Mutual Research …

Laterally Unsupported Purlins Subjected To Uplift, Roger A. Laboube

CCFSS Library (1939 - present)

INTRODUCTION A research study, conducted at Cornell University, provided a theoretical method for evaluating the state of stress for both C- and Z- purlins subjected to wind uplift loading. According to the Cornell analytical method, a Z-purlin has more load carrying capability than a similar C-purlin. Although experimental verification was provided, questions were raised, within the Metal Building Industry, regarding the strength of the C-versus the Z-section. The purpose of the work discussed herein was to develop information regarding the behavior of C- and Z-sections having identical cross-section dimensions. A brief description of the test program, along with a comparison …

H & V News

Building Services Engineering

No abstract provided.

Two-Dimensional Computer Modeling Of Joints And Fractures In Continua, Royd R. Nelson

Theses and Dissertations

This thesis presents a numerical formulation which incorporates the effects of joints, cracks, and fractures into a mathematical mode used to in an existing finite element code. Two separate crack definitions were incorporated, one involving a discrete crack model, and the other a continuum approach defining a new material with regularly spaced joints. Several examples are also presented demonstrating the use of this capability.

Performance Evaluation Of Experimental Paint-Stripe Beads, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

Eight experimental bead types in addition to Kentucky's currently used bead were applied with standard striping equipment at a field test location. Reflectivity measurements using a portable retroreflectometer were conducted, along with visual observations, to rate each bead type. The objective was to determine whether any of the experimental beads was superior to the currently used bead, and if so, would they be economically feasible for widespread use. The differences in bead types involved gradation, refractive index, and surface coating. Based on performance and economic considerations, it was recommended that Kentucky change its bead gradation specifications to correspond to that …

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. …

Development Of Pavement Thickness Designs Using Pozzolanic Base Materials, Gary W. Sharpe, Herbert F. Southgate, Robert C. Deen

Kentucky Transportation Center Research Report

With the escalating costs of materials and construction for highways and streets, many agencies chargedwith the repsonsibility of designing and constructing highwyas are utilizing by-product materials. One application of by-product materials has involved the use of stabilized aggregate bases where pozzolanic materials are used as a stabilizing agent.

The use of pozzolanic materials is not new. However, the use of pozzolanic materials is relatively new to Kentucky. This may be primarily attributed to the availability o an abundant supply of economical aggregate materials. However, as costs of production and processing of aggregate materials have increased, so has the feasibility of …

Survey Of Guardrail End Treatment Usage, Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

Whenever a guardrail terminates within the "clear zone," a crashworthy end treatment is required. To be crashworthy, the end-treatment should not spear, vault, or roll a vehicle during a head-on impact while maintaining vehicle decelerations below recommended limits. As a means of determining types of end treatments currently used in various states and criteria to determine what type to use, a survey letter was sent to each state.

It was found that, generally, the preferred method to use to end roadside steel beam guardrail is to bury the end in a cut slope. When this is not feasible, either a …

Evaluation Of Asphaltic Pavements For Overlay Design, Robert C. Deen, Herbert F. Southgate, Gary W. Sharpe

Kentucky Transportation Center Research Report

To evaluate projects involving approximately 200 route-miles of interstate and primary pavements in Kentucky and Tennessee in relatively short time frames, it was decided to test, analyze, and design overlays using test equipment (Road Rater) and procedures developed by the University of Kentucky Transportation Research Program. This paper presents the analysis methodology and the evaluation and overlay designs for selected projects, including the before-and-after analysis of milling on one project.

The Road Rater applies a dynamic sinusoidal loading of known force and frequency. The velocity of the vibration waves are measured by sensors and integrated electronically to obtain surface deflections …

Concrete Barrier Geometrics (Us-41 Bridge In Henderson, Kentucky), Kentucky Transportation Research Program

Kentucky Transportation Center Research Report

The bridge railing constructed on the approaches to the US-41 northbound bridge over the Ohio River at Henderson, Kentucky, is not in conformance with specifications The vertical face was constructed to be an average height of 4 3/4 inches above the pavement surface rather than the specified 3 inches. From the top of the vertical face, the barrier conformed to a standard New Jersey barrier. However, this meant the intersection between the two sloping surfaces was 14 1/2 inches rather than 13 inches above the pavement surface.

An analysis was conducted to ascertain whether the in-place barrier walls (bridge rail) …

H & V News

Building Services Engineering

No abstract provided.

Bulletin Ma 20 - Sheep Yard Plans - Flocks Up To 500, D. Bicknell

Animal production and livestock published reports

Manjimup Regional Office

Owners of small flocks often use much more labour per sheep than do owners of large flocks. Most of the difference in labour use is the design of sheep sheds and sheep yards, and a smaller affect from the mob size and experience in handling sheep.

This booklet gives some detail on design and construction of yards and a number of yard plans to handle up to 500 or so sheep. Many of the plans are from an Australian Wool Corporation publicatiot1 "Wool Harvesting Notes".

Child Safety Seat Usage In Kentucky After Enactment Of A Mandatory Usage Law, Kenneth R. Agent

Kentucky Transportation Center Research Report

The 1982 Kentucky General Assembly enacted a law requiring use of child safety seats for children 40 inches or less in height. To evaluate the effectness of this law, usage surveys had to be completed before and after the law became effective. This study summarizes data collected one year after enactment of the law and compares this with ''before" data.

One year after enactment of the mandatory usage law the statewide child safety seat usage rate was 22.7 percent. This compared to 14.4 percent usage before the law and represents a statistically significant increase. Usage increased in 18 of the …

Problem Identification For Highway Safety Plan (Fy 1984), Jerry G. Pigman, Kenneth R. Agent, Tom Creasey

Kentucky Transportation Center Research Report

An annual highway safety program is proposed each year for the State of Kentucky in order to comply with Section 402, Title 23 of the United States Code. This program includes the identification, programming, budgeting, and evaluation of safety projects. This report is the fifth in a series of annual reports which have been included as the problem identification portion of Kentucky's Annual Highway Safety Plan.

In the past, the approach to problem identification has been to identify problem areas in the 18 highway safety program areas (standards). While the search for problems in each of these standard areas will …

Alcohol Impact Evaluation (Interim Report), Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

This report is an evaluation of increased police enforcement to reduce alcohol related accidents in Lexington-Fayette County, Kentucky. Three types of information were collected for the analysis; accident data, arrest and adjudication data, and personal opinion data obtained by means of a questionnaire survey. Accident data were collected for two years before the Traffic Alcohol Program (TAP) and one year during the program. A 25 percent sample of arrest and adjudication data was collected one year before and one year during TAP. The questionnaire was sent to 2,500 registered vehicle owners.

Results from before-and-after comparisons and time-series analysis show alchol …

Highway Skid Resistance, James H. Havens

Kentucky Transportation Center Research Report

The physics of friction and traction are reviewed. Hypotheses are presented. Use of a scanning electron microscope to detect and identify polishing aggregate is presented.

Size reduction (crushing) produces greater concentrations of sharp edges, reducing flat and plane surfaces not otherwise contributing to traction.

Surface permeability and drainage through macrotexture was evaluated by an air-percussive device. An air-efflux device was contrived for evaluating hydroplaning potential and for evaluating open-graded surface courses. In-filling has been observed where road debris is abundant.

Grippers and sharpness are needed for wet traction . Drainage is needed to lower hydroplaning potentials. Sand-sizes optimize the concentration …

Structural Design And Installation Criteria For Rigid And Flexible Conduit, Ronald D. Hughes

Kentucky Transportation Center Research Report

Structural design criteria according to current AASHTO guidelines for pipe, pipe-arch, and arch culverts are presented. Fill-height tables, based upon fhose criteria, and proposed bedding details are included.