Digital Commons Network^™

Use Of Economic Analyses And Dynamic Programming In The Selection Of Projects For Resurfacing, Charles V. Zegeer, Kenneth R. Agent, Rolands L. Rizenbergs

Kentucky Transportation Center Research Report

The objective of this study was to develop a dynamic programming procedure using economic analyses to assist in optimizing expenditures in the pavement resurfacing program in Kentucky. Benefit relationships were determined from expected accident reduction, improved comfort, time savings, fuel savings, and maintenance savings. The only cost input to the program was the resurfacing cost of each project.

Dynamic programming was adapted to the selection of projects for resurfacing. Over $8.4 million of additional user benefits would have been realized in 1976 if dynamic programming had been used in selecting projects. The benefit-cost ratio of sections selected for resurfacing was …

Irish H & V News

Building Services Engineering

No abstract provided.

Ground Driven Power Tillage Device, Daniel E. Hammett, Edward M. Smith

Biosystems and Agricultural Engineering Faculty Patents

A power tillage device is provided having a passive rolling coulter as the prime mover for a power tillage blade which is carried in the lead of the coulter on a transfer case mounted as a radius arm on the counter shaft. The tillage blade rotates in the opposite direction from the coulter and is designed for optimum efficiency for shearing and lifting soil from a furrow.

The Variations Of Charpy V-Notch Impact Test Properties In Steel Plates, Aisi Technical Committee On Plates And Shapes

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

A survey of the variation to be expected in Charpy V-Notch tests obtained from plates was conducted by the Committee on Product Standards at the request of the Committee on General Metallurgy. The results of the survey are presented in this report.

The survey data consisted of longitudinal and transverse impact test values obtained from seven specified locations on plates produced to ASTM A-572 as-rolled, A-516 normalized and A-537 quenched and tempered. Three testing temperatures were used for each grade.

The data were collected from industry production during 1973 and 1974. Sufficient data were received to estimate limits of variation …

Welding Of Sheet Steel, Teoman Peköz, William Mcguire

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

No abstract provided.

Acuta Enews January & February 1979, Vol. 8, No. 1 & 2

ACUTA Newsletters

In This Issue

PARTY LINE

BITS & PIECES

MOUTH OF THE SOUTH

POTPOURRI

STEAM TUNNELS & TELEPHONE CABLES

VIRGINIA VIEW

Load And Resistance Factor Design Of Cold-Formed Steel Statistical Analysis Of Mechanical Properties And Thickness Of Materials Combined With Calibrations Of The Aisi Design Provisions Of Unstiffened Compression Elements And Connections, Trinh-Ngoc Rang, Wei-Wen Yu, Theodore V. Galambos

CCFSS Library (1939 - present)

INTRODUCTION This report presents the progress made on the development of the load and resistance factor design of cold-formed steel following the preparation of the First Progress Report. In Article 11.1, the statistical analyses of the tested values versus the specified values on mechanical properties and thicknesses of the steel sheets and strip are discussed. More than 4,000 tensile coupon tests on mechanical properties and 1,400 data on thickness of steel sheets have been collected and analyzed. For the purpose of formulating the procedures to be used for calibration of various provisions of the AISI Specification, the required formulas are …

Flat Plate Solar Collector Materials (And Designs With An Economic Methodology For Optimizing Collector Design), Michael L. Day '79, Donald S. Remer, Daniel Hyatt '82

All HMC Faculty Publications and Research

The desirability of specific materials and designs for conventional flat-plate solar collector components is considered. Then a methodology for choosing the most economic component is presented, consisting of a computer simulation and a rate-of-return analysis. The effect of rising conventional fuel costs is examined. Examples of using the methodology are given, based on Southern California climatic and user-demand conditions. Selective absorber-plate coatings and film inner glazing are shown to be economic, yielding a rate-of-return of 23 percent and 29 percent, respectively.

Update Of National And State Programs Presently Underway To Curb Point And Nonpoint Sources Of Water Pollution From Animal Production Facilities, Donald F. Smith

United States Environmental Protection Agency: Publications

P.L. 92--500, The Federal Water Pollution Control Act Amendments of 1972, has provided two mechanisms for the control of water pollution from animal production facilities. Point source controls require that confined animal production facilities apply for a NPDES permit in order to operate. Nonpoint source controls, as established by State and area-wide water quality management programs, are to be developed around the concept of "Best Management Practices."

Service And Spare Parts, D Hosken

Journal of the Department of Agriculture, Western Australia, Series 4

Service is the preparation, delivery and after-sales maintenance of machinery. It involves responsibilities for both the dealer and the purchaser.

Woodruff Narrows: Low Head Hydroelectric Power Plant Feasibility Determination, State Of Utah - Division Of Water Resources International Engineering Company, Inc.

Reports

Chapter 1 - Summary:

Random Differential Equations In Water Quality Modeling, Brad A. Finney, David S. Bowles, Michael P. Windham

Reports

A probabilistic river water quality model is developed with the capability of determinging the joint and marginal probability density function of biochemical oxygen demand (BOD) and dissolved oxygen (DO) at any point in a river. The one dimensional steady-state model can be applied to a river system with any reasonable number of point loads and diversions and lateral surface and subsurface inflow. The model can simultaneously consider randomness in the intital conditions, inputs, and coefficients of the water quality equations. Any empirical or known distribution can be used for the initial condition. The randomness in the water quality equation inputs …

Modeling The Performance Of The Intermittent Sand Filter, P. A. Cowan, E. J. Middlebrooks

Reports

Several models were developed to predict the efficiency of the intermittent sand filter (ISF) in removing algae from wastewater stabilization pond effluent; volatile suspended solids (VSS) was the analytical technique used to identify algal concentrations. The first (ISF model) and second (modified ISF model) models consisted of two distinct portions: a surface algal layer (SAL) component and a sand phase component. In the ISF model, the sand phase component was described in terms of 20 empirical sand filter efficiency terms (20 ^ coefficients); in the modified ISF model, a functional relationship between ^ and filter depth was developed. The modified …

Algal Bioassay Study For The Animas - La Plata Project, Leslie G. Terry, V. Dean Adams

Reports

No abstract provided.

A Mathematical Hydrodynamic Circulation Model Of Great Salt Lake For Resource Management, Gary Z. Watters, Charles T. Kincaid

Reports

In the Great Basin region of this country, the resource which has always been of great importance is water. In Utah, the proper management of the resources of Great Salt Lake and the watersheds tributary to it, has become a topic of increasing concern. Recently, much emphasis has been placed on developing the recreational and industrial resources of Great Salt Lake. For optimum economic and social benefits from future development plans, the lake and its tributary watersheds need to be considered in terms of a single entity. In this regard, the Utah Water Research Laboratory (UWRL) has conducted several studies …

Studies On Viruses In Water, Rex S. Spendlove, Bill B. Barnett, Dennis B. George, Dennis J. Adams, Stanley F. Hayes, Ronald B. Dean, David Ridinger, Darwin L. Sorensen

Reports

A new procedure for the detection of viral antigens in fecal material was developed. The test is performed by first diluting a fecal sample with phosphate buffered saline to give a liquid consistency. The pH is then adjusted to 8.5-9.0 and the solids are allowed to settle for five minutes. Supernatant fluid from above the fecal sediment is placed on the upper surface of a well of an inverted Immulon microtiter plate and incubated for one hour at 37 degrees C to allow virus to adsorb to the plastic. The Immulon plate is then washed three times with a Tween …

Cyclic Pressure Tests Of Direct Tapped C-900 Pvc Pipe, Roland W. Jeppson

Reports

Performance testing of direct-tapped PVC pressure pipe was conducted at the Utah Water Research Laboratory to verify and document its capabilities under cyclic pressure conditions. Twelve samples of nominal six-inch diameter, pressure class 150 PVC pipe, manufactured to satisfy the requirements of AWWA Standard C900, were obtained from Uni-Bell Member producers. Five pipe samples were tapped and fitted with ¾ inch corporation stops under a line pressure of 80 +- 5psi. Another five samples were tapped fitted with one inch corporation stops under a pressure of 150 psi. Only corporation stops complying with AWWA Standard C800 were used. The remaining …

Federal Agency Procedures For Project Design Flood Determination: Report To U.S. Water Resources Council, L. Douglas James, H. James Owen

Reports

No abstract provided.

Estimation Of Water Surface Elevation Probabilities And Associated Damages For The Great Salt Lake, L. Douglas James, David S. Bowles, W. Robert James, Ronald V. Canfield

Reports

Rising water surface elevations in perennial terminal lakes threaten major damages to shoreline industrial plants, transportation routs, and wetlands. Falling elevations increase pumping costs for industries extracting minerals from the lake water and reduce the quality of shoreline recreation. The managers of these properties need information on future lake level probabilities for planning, and public agencies need information on both probabilities and damages to determine whether lake level control is justified. Standard methods for estimating flood frequency and damages in riverine areas do not work well for terminal lakes because of the interdependency in annual peaks and the long advanced …

Erosion Control Product Testing, C. Earl Israelsen, Eugene K. Israelsen, Joel E. Fletcher, Jerald S. Fifield, Ronald V. Canfield

Reports

Introduction: Fibrex Corporation has capability for manufacturing various blends of cellulose fibers which have been used at locations throughout the country for temporarily controlling erosion on denuded land areas, and for serving as growth media for grass and other vegetation. Soil and climatic conditions vary greatly where these products are used, and it is not possible to determine by observation whether one is more effective than another in controlling erosion or promoting vegetative growth. Fibrex is desirous of knowing with some degree of confidence which products have the highest level of erosion control so that additional efforts can be directed …

Tabulation And Application Of Pan Evaporation Data For Utah Through 1976, Kenneth G. Hubbard

Reports

Monthly values of evaporation, wind movement and water temperatures are presently for all available station in Utah. A brief review is given of factors which effect evaporation along with several examples of how pan evaporation data ware used.

Domestic Water Demand In Utah, Trevor C. Hughes, Robert Gross

Reports

Multiple regression and frequency analysis of average month, peak month, peak day, and instantaneous water use by various water supply systems in Utah and Colorado are used to develop water demand functions. The research objective was to predict water demand as a function of a small number of independent variables for which data were easily obtainable and thereby provide an attractive method for use by consulting engineers inf uture planning studies. The independent variables in landscaped area and accounts for use of supplementary ditch or pressure irrigation systems. The demand functions were developed with data from a sample of 14 …

Program Development Plan For An Operational Cloud Seeding Project In Utah With Evaluation Included, Geoffrey E. Hill

Reports

1. Operation Framework

In the arid climate of Southern and Central Utah, there is a continuing need to augment water supplies. While much of the water is needed for summertime use, particularly for irrigation, most of the available water is supplied by winter storms. Therefore, it is for the augmentation of the water stored naturally as snowpack at higher elevations that cloud seeding can make its greatest contribution.

Over the past several years, an attempt has been made to augment the snowpack by cloud seeding. Although there is a physical basis for expecting an increase in precipitation from a scientifically managed …

Research On Increased Winter Orographic Precipitation By Cloud Seeding (Fy 1979) Development Of Cloud Seedability Criteria, Geoffrey E. Hill

Reports

This research continues the exploration of improved cloud seeding technology through the use of airborne seeding, cloud physics measurements from a research aircraft and ground based measurements for the purpose of understanding transport and diffusion of seeding material, developing seedability criteria, and documenting in-cloud responses to seeding. Development of precipitation measuring and memory devices was continued with the aim of obtaining a network of gages well suited for measurement of winter snowfall in mountainous regions. Results of the research are highlighted by the development of criteria for seeding winter orographic storms. It was found that the cloud top temperature and …

Historical And Projected Municipal And Industrial Water Usage In Utah 1960-2020, Roger D. Hansen, Herbert H. Fullterton, A. Bruce Bishop, Trevor C. Hughes, Ronald Christensen, Davis S. Bowles, Kyle Matteson, Hershel G. Hester Iii, Ronald Mead, Randy Simmons

Reports

This publication reports the results of a municipal and industrial water use inventory. Data reported covers the period 1960 through 1976. Time series information is aggregated from municipal and industrial system level to country and state totals. Total municipal and industrial withdrawals are divided between surface and groundwater sources. Yearly per capital withdrawal rates are estimated for 50 Utah municipalities and for each of Utah’s 29 counties. Per capita withdrawal rates range from a high of over 400 gallons per capita per day (gcd) in the communities of Delta, Fillmore, Hyrum, Logan, and Morgan to a low of 100 gcd …

Some Further Cost Allocation Studies For The Senegal River Development Program: Report 2, J. Paul Riley, David S. Bowles, Jay C. Anderson, John E. Keith

Reports

No abstract provided.

An Economic Evaluation Of The Salinity Impacts From Energy Development: The Case Of The Upper Colorado River Basin, Rangesan Narayanan, Sumol Padungchai, A. Bruce Bishop

Reports

To analyze the effect of potential energy development on water allocation and water quality in the Upper Colorado River Basin, a linear programming model is formulated. Using the model, changes in salinity are predicted. Further, least-cost strategies to maintain the established numeric salinity criteria through both structural and nonstructural alternatives are developed. The effectiveness of alternative control measures are examined within given institutional constraints. Based on cost-benefit analysis, optimal salinity levels over time are proposed. The economic feasibility of presently planned strucutral measures to reduce salinity is investigated and contrasted with nonstructural alternatives.

Integrating Water Resources And Land Use Planning, Jim Mulder, Kirk R. Kimball, Dean T. Larson, L. Douglas James, Lance R. Rovig, Dave Labau, Ken Sizemore

Reports

Information and recommendations were developed pertaining to the integrating of water resource and land use planning at a conceptual level. In the accomplishment of this goal, the report acts as a vehicle of information transfer to facilitate recognition of the interrelationships between land use and winter resources planning by practitioners in both areas. The approach that was used includes six basic components: 1) the clarification of current planning theory as it pertains to both water and land use planning, 2) analysis and review of historical and current land use planning practices, 3) review of historical and current land use planning …

Evaluation Of In-Line Direct Filtration For Virus Removal, Behjat Sadat Malek, Dennis B. George, Daniel S. Filip, Bill B. Barnett

Reports

The purposes of this study were to evaluate virus removal in treatment of water supplies by an in-line direct filtration pilot plant system and to suggest a system design to enhance virus removal. Isotherm and jar tests were conducted to evaluate the effects of pH, sodium ion concentration, and coagulants (alum and cationic polyelectrolytes Cat-Floc T, Nalco 8102, and 8103) on the bacteriophage MS2 contained in water. Isotherm studies were also conducted to assess the kinetic adsorption of MS2 to sand, anthracite, and garnet. Rapid sand, dual-media, and multi-media filters were tested in continuous in-line direct filtration operations. Approximately 95 …

Stochastic Analysis For Water Quality, Ronald F. Malone, David S. Bowles, William J. Grenney, Michael P. Windham

Reports

This report demonstrates the feasibility of applying stochastic techniques to linear water quality models. The Monte Carlo, First Order, and Generation of Moment Equation techniques are applied to a long term phosphorus model of Lake Washington. The effect of uncertainty of the phosphours loading term on simulated phosphous levels is analyzed. All three stochastic techniques produced the same results. The simulated concentrations of phosphorus in the water column are very responsive to uncertainty in annual phosphorus loading, the sediment concentrations relatively insensitive. The Monte Carlo technique is shown to require the most computation time of the three stochastic techniques applied. …